PowerGrid HandBook
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Transcript of PowerGrid HandBook
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how to apply for electricity connection
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This handbook is published by PowerGrid Ltdin collaboration with SP Services Ltd
December 2002
Procedures and requirements highlighted in this handbook arecorrect at the time of printing. Any changes that may arise willbe reflected in the next edition.
ISBN: 981-04-6932-3
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Tel No Fax No
SP SERVICES LTD
General Enquiry on Application 68238287 68238289For Connection to Transmission System 68238340
Consumer Connection Agreement
Contracts Section 68238282 68238289
Testing and Turn-On Appointment
Supply Application Section 68238287 68238289Installation Section 62777064 62777044
Opening of Utilities Accounts
Enquiry 1800-2356841 68238219
POWERGRID LTD
Endorsement of Substation Drawings• East zone 68238555 68238564• West zone 68238556 68238564
Installation of Meters
Senior Manager (Meter) 62777000 62777008Enquiry 62777005
ImportantContact Numbers
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1 GENERAL INFORMATION 7
1.1 Introduction 7
1.2 Connection Voltages And Supply Frequency 7
1.3 Submission Of Application 8
1.4 Provision Of A Substation 8
1.5 Domestic Premises And Load Requirement Not Exceeding 45kVA 9
1.6 Meter 9
1.7 Tariffs For Non-Contestable Customers 10
1.8 Payment For Electricity Charges By Contestable Customers 10
1.9 Opening Account And Payment Of Security Deposit For
Use Of System (UOS) Charges 10
1.10 Termination Of Account 10
1.11 Disconnection Of Service Cables 10
2 APPLICATION FOR LOAD CONNECTION 11
2.1 Distribution Connection 11
2.2 Transmission Connection 14
3 TRANSMISSION CHARGES 17
3.1 Consumer Connection Agreement 17
3.2 Use of System (UOS) Charges For Non-Contestable Customers 18
3.3 Use of System (UOS) Charges For Contestable Customers 19
3.4 Temporary Supply 22
3.5 Supply For Power Stations 22
Table of Contents
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4 ENERGISATION AND TURN-ON PROCEDURES 23
4.1 Non-Domestic Premises
(Load Requirement Not Exceeding 45kVA), And Domestic
Premises Where Electrical Installations Are Provided
And Pre-Inspected Or Previously Inspected And Energised 23
4.2 Premises With Direct Connection
From PowerGrid’s Transmission System 24
4.3 Booking An Appointment 25
4.4 Premises With Indirect Connection
(i.e. Premises In a Multi-Metered Development) 27
4.5 Modification To An Existing Electrical Installation 28
4.6 Licence To Use Or Operate An Electrical Installation 28
4.7 Certificates And Statements For First Energisation
Of Service Connection 28
4.8 Lead-Time For Application For Service Connection 29
4.9 Notes To Be Read In Conjunction With Application Procedure 31
5 CUSTOMER’S INSTALLATION REQUIREMENTS 35
5.1 Requirements For HV And LV Connection (22kV And Below) 35
5.2 Requirements For EHV Connection (230kV And 66kV) 37
6 METERING REQUIREMENTS 39
6.1 General 39
6.2 Location Of Meter 40
6.3 Meter/Service Board Specifications (Single-Phase
And 3-Phase Services, Not Exceeding 100A Per Phase) 42
6.4 Wiring, Layout Of Meters, MCBs, etc
In Centralised Meter Rooms, Meter Compartments/
Riser Ducts/Cupboards 42
6.5 Submission Of Layout Plans 43
6.6 Meters For 3-Phase Low Voltage Connection
(Exceeding 100A Per Phase) 43
6.7 High Voltage/Extra High Voltage Metering 44
6.8 Master- And Sub-Metering Scheme 46
6.9 Metering Requirements 46
6.10 Contestable Customers 48
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7 APPENDICES 49
1 Application Form For Connection To PowerGrid
Transmission System 50
2 Consultation Form For Connection To PowerGrid
Transmission System 52
3 Form CS/3 – Letter Of Consent From The Landlord/Management
Corporation 53
4 Form CS/3H – Letter Of Consent From
The Housing & Development Board 54
5 Request To Handover Substation 55
6 Application For The Supply Of Water, Electricity And/Or Gas 56
7 Application For Interbank Giro 57
8 Form CS/5 – Application For Inspection Of Electrical Installation 58
9 Types And Layout Of Substation 60
10 Submission Of Substation Site And Design Plans 61
11 6.6kV/LV Substation (4 drawings) 62
12 22kV/LV Substation (5 drawings) 66
13 Heavy Aluminium Louvred Door For Electric Substation (6 drawings) 71
14 Gate Details (2 drawings) 77
15 Checklist For Substation Building Plan Submission 79
16 Substation Layout Requirements To Be Incorporated
In The Architectural Plans 80
17 General Requirements For EHV Substation (66kV And 230kV Only) 82
18 • Protection Requirements For Customer’s 22kV and 6.6kV
Main Incoming Switchgear 83
• Protection Requirements For Customer’s LV Main
Incoming Switchgear 84
• Type 1: Customer 66kV Feeder Connection
(Without Embedded Generation Plant) 85
• Type 2: Customer 66kV Feeder Connection
(With Embedded Generation Plant) 86
• Type 3: Customer 66kV Feeder Transformer Connection 87
• Type 4: Customer 230kV Feeder Connection 88
• Type 5: Customer 230kV Feeder Transformer Connection 89
19 Application For De-Energisation/Re-Energisation (ADRE) 90
20 Statement For De-Energisation And Re-Energisation (SDRE) 91
21 Certificate Of Readiness For The Energisation Of Service Connection 92
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22.1 Form CS/6 – Request For Installation Of Electricity kWh Meter
For New Supply Under Direct Supply From PowerGrid
(Contestable Customer) 94
22.2 Form CS/7 – Request For Installation Of Electricity kWh Meter
(For Load Exceeding 45kVA) Under Multi-Metered Building Scheme 95
23 Application For Appointment For Energisation Of
Service Connection By Fax 97
24 • Technical Requirements For Service Cable And
Meter Compartment For Landed Houses 98
• Standard Meter Compartments At Gate Pillar 99
25 Standard Meter Board 100
26 Standard Size For Single-Phase Meter Board 101
27 Standard Size For Three-Phase Meter Board 102
28 CT Meter Panel For Low Voltage Supply 103
29 Methods Of Sealing Meter Panels 104
30 Enclosure For Low Voltage Metering Current Transformers 105
31 HV Metering Kiosk Requirements (For 1 Or 2 Feeders) 106
32 • HV Metering Kiosk Requirements (For 3 Or 4 Feeders) 107
• CT Meter Panel For Low Voltage Supply 108
33 HV Metering Panel Requirements (For 1 or 2 Feeders) 109
34 Voltage Ratio, Sequence And Phase Angle Tests Report 110
35 Basis For The Service Connection Charge 111
36 Standard Service Connection Cables 112
37 Certificate of Compliance
Regulation 5(2) Of The Electricity
(Electrical Installations) Regulations 2002 113
38 Statement Of Turn-On Of Electricity
Regulation 5(3) Of The Electricity
(Electrical Installations) Regulations 2002 114
39 Requirements For Exempt Generation Facility Not Exceeding 1MW 115
40 List of Standards
• IEC Standards 116
• British Standards 119
• Singapore Standards 120
• Other Standards 120
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General Information
GeneralInformation1
1.1 INTRODUCTION
1.1.1 SP Services Ltd (SPSL) and PowerGrid Ltd (PowerGrid) are subsidiaries ofSingapore Power Ltd. SPSL provides support services for the electricitymarket. It receives requests for electricity service connection; offers termsand conditions of service connection; arranges for service connectionenergisation/turn-on; and collects transmission charges, security depositsand charges for other services on behalf of PowerGrid. SPSL also billscustomers for consumption. PowerGrid develops, operates and maintainstransmission and distribution facilities.
1.1.2 The supply of electricity and electrical installation practices are governedby the Electricity Act and its subsidiary legislation.
1.2 CONNECTION VOLTAGES AND SUPPLY FREQUENCY
1.2.1 In Singapore, customers’ load installations are connected at the followingvoltages:
1.2.1.1 Transmission voltage of 66kV and 230kV
1.2.1.2 Distribution voltage of 230V, 400V, 22kV (may vary within ± 6%)
The supply voltages are classified in the following categories:
1.2.1.3 Low voltage (LV) refers to 230V, single-phase and 400V, 3-phase
1.2.1.4 High voltage (HV) refers to 22kV
1.2.1.5 Extra high voltage (EHV) refers to 66kV and 230kV
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General Information
1.2.2 The following connection schemes are provided, according to customers’load requirements:
1.2.2.1 230V, 50Hz, single-phase, up to maximum of 23kVA, 100A
1.2.2.2 400V, 50Hz, 3-phase, 4-wire
1.2.2.3 22kV, 50Hz, 3-phase, 3-wire for a Contracted Capacity of:
1.2.2.3.1 between 1,700kW and 12,750kW for 2 HV services
1.2.2.3.2 between 12,751kW and 25,500kW for 4 HV services
1.2.2.4 66kV, 50Hz, 3-phase, 3-wire for connection with minimum ContractedCapacity of 25,500kW
1.2.2.5 230kV, 50Hz, 3-phase, 3-wire for connection with minimum ContractedCapacity of 85,000kW
1.2.3 Where the customer requires a connection voltage and/or frequencies thatdiffer from those specified above, the customer is required to provide, installand maintain the necessary transformation equipment.
1.3 SUBMISSION OF APPLICATION
SPSL serves as a one-stop customer service centre. It receives all applicationforms on behalf of PowerGrid, and responds to all applications made by theLicenced Electrical Worker (LEW), who acts as the customer’s agent forconnection to the transmission system.
Customers applying for their installations to be connected to PowerGrid’stransmission system must submit their applications through their LEWs.Every application must be accompanied by all supporting documentationrequested by SPSL. A copy of the Application Form is shown in Appendix 1.
For a development in the conception/planning stage, the customer is advisedto seek consultation regarding PowerGrid’s requirements, such as theprovision of a substation, for load connection. The Consultation Form(Appendix 2) must be submitted directly to PowerGrid by the customer’sLEW.
1.4 PROVISION OF A SUBSTATION
1.4.1 Direct service connection from PowerGrid’s LV network to the customer’sinstallation is available for a small load requirement not exceeding 280kVA(400A). However, the provision of a direct service connection is dependenton the available network capacity in the vicinity. If there is insufficientcapacity, the customer is required to provide a substation for the connection.
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General Information
1.4.2 For a larger load requirement exceeding 280kVA (400A), the customer hasto provide a substation for PowerGrid to install necessary equipment to caterfor the load.
1.5 DOMESTIC PREMISES AND LOAD REQUIREMENT NOT EXCEEDING
45kVA
1.5.1 For premises where the electricity meter has already been installed byPowerGrid and no extension or rewiring work is required, electricity serviceconnection will be turned-on on the 4th working day from the date of theopening of an account with SPSL.
1.5.2 For premises where there is no electricity meter or where extension orrewiring work is required, the customer has to engage an LEW and submitan application for load connection (See Section 2).
1.6 METER
All meters required for measuring a customer’s electricity consumption anddemand (where applicable) are provided and maintained by PowerGrid. Thecustomer provides meter boards, compartments, kiosks etc, as PowerGridmay require for the installation of its metering equipment.
1.6.1 Master- And Sub-Metering
A “Master-meter” is a meter measuring the consumption for all units andcommon areas in a building or cluster of buildings which are used or occupiedby multiple consumers.
A “Sub-meter” is a meter measuring the consumption for a unit in a buildingor cluster of buildings used or occupied by multiple consumers, whoseelectricity is taken through a Master-meter.
1.6.1.1 Multi-Metered Premises
The following are categories of multi-metered premises:
1.6.1.1.1 Residential premises which have landlord and tenant supply connections
1.6.1.1.2 Commercial complexes which have landlord and tenant supply connections
1.6.1.1.3 Multi-storey factories or industrial complexes which have landlord and tenantsupply connections
1.6.1.1.4 All multi-metered premises fall under the Master- and Sub-metering scheme,with the exception of HDB residential premises.
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General Information
1.7 TARIFFS FOR NON-CONTESTABLE CUSTOMERS
1.7.1 Tariffs are currently charged for low tension, high tension and extra hightension electricity consumption.
1.7.2 Tariffs are subject to change and are published by SPSL from time to time.Online information on the latest electricity tariffs are available atwww.spservices.com.sg.
1.8 PAYMENT FOR ELECTRICITY CHARGES BY CONTESTABLE CUSTOMERS
Contestable customers pay to SPSL or authorised retailers, charges forelectricity consumption as ascertained by meters, and transmission chargesand other fixed charges as determined by SPSL. Payment for electricitycharges must be made on or before the due date specified in the bill.
1.9 OPENING ACCOUNT AND PAYMENT OF SECURITY DEPOSIT FOR USE
OF SYSTEM (UOS) CHARGES
The customer must open an account and place a security deposit for UOScharges with SPSL upon application for energisation of service connection.
1.10 TERMINATION OF ACCOUNT
Non-contestable customers must give 4 business days’ notice and contestablecustomers must give 12 business days’ notice to terminate an account. Suchnotices must be in writing.
1.11 DISCONNECTION OF SERVICE CABLES
Disconnection work involves the de-energisation and removal of servicecables and equipment (See 4.9.6). The following are indicative lead-timesfor the work:
1.11.1 For disconnection and removal of LV service cables where road-openingwork is not involved, the lead-time is about 5 business days. Where roadopening work is involved, a lead-time of 1 month is required.
1.11.2 For disconnection of 6.6kV and 22kV where removal of service cables andequipment are involved, the lead-time is about 1 month.
1.11.3 For disconnection of 66kV and 230kV service cables, the service cable andequipment are de-energised within 10 business days, subject to the approvalof the Power System Operator (PSO). The subsequent removal of servicecables and equipment will depend on the operational requirement andapproval of the PSO.
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Application For Load Connection
2.1 DISTRIBUTION CONNECTION
2.1.1 Introduction
Each premises can have only one customer’s intake connection point. Formodification of connection (such as upgrading of the load requirement) toexisting premises, the customer is required to amalgamate the existing serviceconnection into one intake.
2.1.2 Consultation
For a development in the initial planning stage, the customer is advised toseek consultation with PowerGrid to ascertain PowerGrid‘s requirementsfor a new or modified connection to the transmission system. The LEW isrequired to submit the Consultation Form (Appendix 2), together with a site/location plan to PowerGrid.
After receipt of the submission for consultation, PowerGrid will send a replystating the approved load and other technical requirements, such as theprovision of substation requirements necessary for the load connection tothe transmission system.
2.1.3 Application
The Application Form (Appendix 1), together with a copy of the site/locationplan, must be submitted to SPSL by the LEW for new or modified connectionsof new or existing premises to the transmission system.
Application ForLoad Connection2
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Application For Load Connection
2.1.3.1 Processing Of Application
Generally, SPSL responds to applications within 10 business days. Theresponses are made according to the following customer categories:
2.1.3.1.1 Contestable Customer
– A Consumer Connection Agreement, containing the service connectioncharge payable, the offer letter and the standard terms and conditionswith respect to the distribution service connection.
– If a substation is required, a letter stipulating the requirements will beforwarded to the customer, and an Agreement offered after the substation’splans are endorsed.
2.1.3.1.2 Non-Contestable Customer
– A Quotation, containing service connection charge payable and theconditions of service with respect to the distribution service connection.
– If a substation is required, a letter stipulating the requirements will beforwarded to the customer. A Supply Agreement, including the serviceconnection charge payable and the terms and conditions with respect tothe distribution service connection, is offered after the substation’s plansare endorsed.
2.1.3.2 Commencement Of Work
– PowerGrid commences work only when the Agreement has been signedand received by SPSL, together with payment of service connectioncharges.
2.1.4 Types Of Premises
2.1.4.1 Multi-Metered Premises
2.1.4.1.1 A multi-metered premises is one where the landlord/MCST (i.e. a master-metered consumer or directly connected consumer) receives bulk intakeservice connection from PowerGrid, and transforms/reticulates the supplyto all the tenants (i.e. sub-metered consumers) within the premises. Anyapplication for new or modified connection (including upgrading) for thebulk intake to the multi-metered premises must be made by the landlordthrough its LEW.
A master-metered consumer means a consumer that is responsible for thecommon usage of a master-metered installation which is connected to thetransmission system.
A master-metered installation means an installation in which supply isreceived by a master-metered consumer and sub-metered consumers.
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Application For Load Connection
A sub-metered consumer means a consumer, other than a master-meteredconsumer, that receives supply in a master-metered installation via theelectrical system owned by a master-metered consumer.
2.1.4.1.2 The landlord/MCST or HDB, in the case of HDB premises, must ensure thatthe total applied load requirement for service connections to the multi-metered premises meet the total existing and future load requirements forall tenants. All tenants applying for any upgrading of load must do so throughtheir master-metered consumer. In this regard, the master-metered consumermust approve the load of all tenants within the premises.
2.1.4.1.3 If the landlord’s existing approved load is insufficient to cater for the tenants’load requirement, the landlord, as a master-metered consumer, must submitan application to SPSL for modification (upgrading) of service connectionto the existing premises. In this case, the existing service cables areamalgamated with the new intake. Hence, there will not be separate directconnections to the tenants of such premises.
2.1.4.2 Premises In Private Housing, Industrial Estates, Commercial Developments
Requiring Provision Of Low Voltage (LV) Distribution Network
2.1.4.2.1 For connection to premises where several parcels of land are to be sold orleased individually, one or more substations must be provided by thedeveloper. Where the individual parcels of land are to be sold prior todevelopment of these substations, details of the substation requirements andapproved load must be included in the sales agreement by the future landparcel’s owner or lessee.
2.1.4.2.2 The developer must provide the development’s total load requirement andinclude the breakdown of the individual premises’ load requirement (asspecified in the sales agreement) and the communal load requirement, ifapplicable.
2.1.4.2.3 In the case of landed housing estate development, the LEW must liaise withNational Parks Board for the siting of overground distribution boxes on turfedareas. PowerGrid will provide and install the LV distribution network andservice connection cables for the development.
2.1.4.3 Premises Involving Temporary Connection With Provision Of Substation
2.1.4.3.1 Special terms and conditions apply in such cases for temporary connectionto construction worksites and other temporary premises. The term grantedfor temporary connection is usually 24 months.
2.1.4.3.2 Where there is a need for the provision of a temporary substation, thecustomer must provide the site and construct the structure of the substationaccording to the requirements of PowerGrid.
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Application For Load Connection
2.1.4.3.3 There will be a need to install the necessary cables and equipment to facilitatethe temporary connection to the distribution network. The customer paysoutright costs for the cables and a monthly hiring charge for the use of theequipment (including the cost of insuring the equipment) during the termfor temporary connection.
2.1.5 Provision Of Substation
2.1.5.1 When an application for load connection necessitates the provision of asubstation (See Appendices 9 & 10), a site must be provided and a substationconstructed by the customer at its own cost.
2.1.5.2 The customer is advised to site the substation at an inconspicuous location,away from the main entrance of the development and major public roads.The customer is also encouraged to harmonise, blend and integrate thesubstation with its development.
2.1.5.3 PowerGrid’s officers and vehicles will have full and unrestricted access tothe substation.
2.1.6 Types Of Service Connection Cables
The types of cables for service connection is shown in Appendix 36. In theevent that the customer is required to supply and install the cables, thecustomer’s LEW has to seek consent from PowerGrid if the cables are differentfrom the list shown in Appendix 36.
2.2 TRANSMISSION CONNECTION
2.2.1 Consultation
2.2.1.1 A customer may choose to seek preliminary comments from PowerGrid viathe connection consultation process before submitting a formal application.This practice is encouraged as incorporating PowerGrid’s requirements in adeveloper’s preliminary proposal would expedite the application process ata later stage.
2.2.1.2 To initiate the connection consultation process, the customer has to submitthe Consultation Form (Appendix 2) through an LEW to PowerGrid.
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Application For Load Connection
2.2.2 Application
The following are steps in the application for service connection:
2.2.2.1 The customer submits the Application Form (Appendix 1) through an LEWto SPSL.
2.2.2.2 A connection proposal, duly endorsed by the PSO, is given to the customer.It outlines the connection scheme, connection voltage, connection equipmentand facilities required of the customer and the estimated connection charges.PowerGrid endeavors to respond to the customer, through SPSL, within 60business days and 100 business days for 66kV connections and 230kVconnections respectively.
2.2.2.3 Where the application requires the provision of an EHV substation, thecustomer must adhere to the general requirements attached in Appendix 17.
2.2.2.4 Once the customer acknowledges acceptance of PowerGrid’s connectionproposal, PowerGrid proceeds to execute the Consumer ConnectionAgreement through SPSL. The Agreement contains an offer letter, the standardterms and conditions associated with the connection and an estimation ofthe connection charges.
2.2.3 Lead-Time For Application Of Transmission Connection
2.2.3.1 The timely provision of electricity supply to a development involves thejoint efforts of SPSL, PowerGrid, and the customer and their agents, such asthe LEW. While SPSL and PowerGrid will make every effort to engineer andimplement the connection scheme, it is at the same time essential for thenew customers and their agents to co-operate via timely submission ofapplications and plans, timely acceptance of the terms and conditions ofconnection and compliance with the necessary PowerGrid or TransmissionCode requirements.
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Application For Load Connection
2.2.3.2 As a guide for the customer and their agents, the normal lead-times for theevents leading to the energisation of 66kV service connections are listed inthe box below. The actual lead-time to energisation may vary for eachconnection, depending on the actual service cable length and the progressof intermediate events leading to completion of service connection works.Customers will be informed accordingly either at the point of application orat any time a review is required. For 230kV service connections, the customerwill be informed of the lead-time only at the point of application.
NORMAL LEAD-TIME FOR ENERGISATION OF 66kV SERVICE CONNECTION
New 66kV Connection
New 66kV Connection from New 66kV Substation
from PowerGrid’s Provided by Connection
Events Existing Substation Applicant
From day of executionof Consumer Connection 21 months 26 months*Agreement to energisationof service connection
Note:* The customer is required to handover the substation 8 months prior to target date of
energisation of service connection.
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Transmission Charges
3.1 CONSUMER CONNECTION AGREEMENT
3.1.1 All customers are required to enter into a Consumer Connection Agreementwith PowerGrid and to pay Use of System (UOS) charges. Customers havinga direct connection to the transmission system must also pay a serviceconnection charge. For non-contestable customers, the ConnectionAgreement is part of the Supply Agreement.
3.1.2 The Consumer Connection Agreement for customers taking HV supply at6.6kV/22kV or EHV supply at 66kV/230kV will, inter alia, state the ContractedCapacity, which is deemed to be the requirements for a period of five years.Customers cannot reduce their Contracted Capacity until the expiration ofthe 5-year period or additional 5-year period. Further, a customer whoterminates the supply agreement during the 5-year period or additional 5-year period will be required to pay PowerGrid through SPSL/Retailer, theContracted Capacity Charge for the unexpired portion of the 5-year period.
3.1.3 UOS charges are payments for the use of the transmission services. The UOScharges are paid for electricity consumption at each metered intake supplypoint in accordance with the voltage at which a customer receives theelectricity supply.
3.1.4 In the case of HV and EHV supply to multi-metered premises, the landlordhas to enter into a Connection Agreement for the network capacity requiredfor his own load only – i.e. supply for common services, etc.
Transmission Charges3
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Transmission Charges
3.2 USE OF SYSTEM (UOS) CHARGES FOR NON-CONTESTABLE CUSTOMERS
3.2.1 UOS charges for non-contestable customers are included in the electricitytariffs offered by SPSL. The types of tariffs currently available are for lowtension (LT: 400V/230V), high tension (HT: 22kV and 6.6kV) and extra hightension (EHT: 66kV).
3.2.3 Low Tension (LT) Supply
LT customers pay charges based only on energy (kWh units) supplied to aninstallation. The supply is charged at a flat rate for each kWh delivered ateach metered intake supply point.
3.2.4 High Tension (HT)/Extra High Tension (EHT) Supply
HT and EHT customers pay charges calculated from tariffs based on theContracted Capacity Charge, Usage Charge, Uncontracted Capacity Chargeand Reactive Power Charge.
3.2.4.1 The Contracted Capacity Charge payable by customers to SPSL is based onkW Contracted Capacity. The Contracted Capacity Charge is calculated asfollows:
Contracted Capacity Charge = Customer’s Contracted Capacity xContracted Capacity Rate
3.2.4.2 The Usage Charge payable by the customers to SPSL is based on kWh ofelectricity supplied. The Usage Charge is calculated as follows:
3.2.4.2.1 For Peak Period
Usage Charge = kWh consumed during the Peak Period x Peak Period Rate
3.2.4.2.2 For Off-Peak Period
Usage Charge = kWh consumed during the Off-Peak Period xOff-Peak Period Rate
3.2.4.3 The Uncontracted Capacity Charge, which is based on the customer’s excesskW demand, is payable if in any month the customer’s actual kW maximumdemand exceeds its Contracted Capacity. The Uncontracted Capacity Chargeis calculated based on the following:
Uncontracted Capacity Charge = (kW maximum demand – ContractedCapacity) x Uncontracted Capacity Rate
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Transmission Charges
3.2.4.4 The Reactive Power Charge, which is based on the customer’s excess kVArh,is payable if in any month the customer’s kVArh consumption exceeds 62%of its kWh consumption. The Reactive Power Charge is calculated based onthe following:
Reactive Power Charge = (kVArh – 62% of kWh) x Reactive Power Rate
3.3 USE OF SYSTEM (UOS) CHARGES FOR CONTESTABLE CUSTOMERS
Contestable customers pay UOS charges for transmission services at eachmetered intake supply point in accordance with the voltage at which thecustomers receive the electricity supply.
UOS charges are subject to change and these changes will be published byPowerGrid from time to time.
3.3.1 Low Tension (LT) Supply
LT supply is metered on energy (kWh units). LT supply for contestablecustomers attract UOS charges based only on energy supplied to aninstallation. The supply is charged at a flat rate for each kWh delivered ateach metered intake supply point.
3.3.2 High Tension (HT), Extra High Tension (EHT) And
Ultra High Tension (UHT: 230kV and above) Supply
For HT, EHT and UHT supply, each metered intake supply point attracts itsown UOS charges as follows:
a) a Contracted Capacity Charge,b) a Peak Period Charge,c) an Off-Peak Period Charge,d) a Reactive Power Charge, ande) (i) an Uncontracted Capacity Charge, and
(ii) an Uncontracted Standby Capacity Charge (only for customers withembedded generation who opt to cap their demand drawn from thenetwork).
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Transmission Charges
3.3.2.1 Contracted Capacity Charge
3.3.2.1.1 The Contracted Capacity Charge is a monthly charge for the ContractedCapacity at each metered intake supply point of a customer. The ContractedCapacity of a metered intake supply point is the total supply capacity in kWrequested by the customer.
3.3.2.1.2 For a new supply, the Contracted Capacity is deemed to be the customer’srequirement for a binding period of 5 years. This period starts from the targetdate or the date PowerGrid’s plant and equipment, except for the servicecable, are available to provide such Contracted Capacity, whichever is thelater.
For new HT, EHT and UHT supply, the minimum Contracted Capacity foreach metered intake supply point shall be as follows:
HT with 1 or 2 feeders 1,700kWHT with 3 or more feeders 12,750kWEHT 25,500kWUHT 85,000kW
For new supply, a request may be made for intermediate steps before the fullContracted Capacity is implemented during the first year of the 5-year bindingperiod. The first step will be at least one quarter of the customer’s fullContracted Capacity at each metered intake supply point.
3.3.2.1.3 After the 5-year period, the Contracted Capacity at each metered intake supplypoint may be reduced subject to the following minimum values:
HT with 1 or 2 feeders 850kWHT with 3 or more feeders 6,375kWEHT 12,750kWUHT 42,500kW
Any revision of the Contracted Capacity after the 5-year period will applyfor a minimum binding period of 1 year.
3.3.2.1.4 For a new development with landlord and tenants, the supply capacityrequired by the landlord himself must meet the minimum values set out in3.3.2.1.2 and 3.3.2.1.3 above in order for the landlord to qualify for HT orEHT supply.
3.3.2.1.5 Upward revision of the Contracted Capacity may be allowed during thevalidity of the binding period of 5 years or 1 year of the Contracted Capacity.The revised Contracted Capacity in such cases apply for the remainder ofthe 5-year period or for a minimum period of 1 year, whichever is the greater,provided PowerGrid is not required to install new or additional equipment.Downward revision during a binding period will not be allowed.
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Transmission Charges
3.3.2.1.6 A customer whose revised contracted capacity requires PowerGrid to installnew or additional equipment, will be considered as receiving a new supplywith a new 5-year binding period.
3.3.2.2 Peak Period Charge
The Peak Period Charge payable is the monthly charge based on the energy(kWh units) supplied to an installation during the peak period – from 7.00amto 11.00pm – in that month.
3.3.2.3 Off-Peak Period Charge
The Off-Peak Period Charge payable is the monthly charge based on theenergy (kWh units) supplied to an installation during the off-peak period –from 11.00pm to 7.00am – in that month.
3.3.2.4 Reactive Power Charge
The Reactive Power Charge is a monthly charge for the installation’s excesskVArh consumption. The excess kVArh is the difference by which theinstallation’s kVArh consumption drawn from the network in that month isgreater than 62% of its kWh consumption drawn from the network in thesame month.
3.3.2.5 Uncontracted Capacity Charge
3.3.2.5.1 The Uncontracted Capacity Charge applies to customers without embeddedgeneration. It also applies to existing HT and EHT customers with embeddedgeneration whose monthly maximum demand in kW is the maximumsummated demand in kW in the month, determined by summating the kWdemand from the network and the kW output from embedded generation.
3.3.2.5.2 The Uncontracted Capacity Charge is a monthly charge for the UncontractedCapacity consumed. The Uncontracted Capacity is the capacity in kW bywhich the maximum demand in kW (measured by the half-hour integrationmeter) exceeds the Contracted Capacity at that metered intake supply point,and is chargeable for the month concerned.
3.3.2.5.3 The Uncontracted Capacity Charge is also applicable to existing HT andEHT customers with embedded generation who opt to cap their powerdemand in kW drawn from the network in the event that the maximumdemand in kW (measured by the half-hour integration meter) exceeds theContracted Capacity. The Uncontracted Capacity for these customers islimited to 20% of the Contracted Capacity.
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Transmission Charges
3.3.2.6 Uncontracted Standby Capacity Charge
3.3.2.6.1 The Uncontracted Standby Capacity Charge applies to existing customerswith embedded generation who opt to cap their power demand in kW drawnfrom the network. This charge applies to such customers in the event thattheir demand in kW exceeds 120% of the Contracted Capacity at that meteredintake supply point due to their failure to cap the kW demand drawn fromthe network.
3.3.2.6.2 The Uncontracted Standby Capacity Charge is a monthly charge for theUncontracted Standby Capacity consumed. The Uncontracted StandbyCapacity is the capacity in kW by which the demand in kW (measured bythe power meter) exceeds 120% of the Contracted Capacity at that meteredintake supply point for a duration of more than 10 seconds due to theirfailure to cap the kW demand drawn from the network, and is chargeable forthe month concerned.
3.4 TEMPORARY SUPPLY
Temporary supply is available only at LT and HT voltages for temporarycivil engineering and building construction sites. The UOS charges applicablefor the LT and HT temporary supply will be as in 3.2 and 3.3.
For temporary supply at HT, the Contracted Capacity applies for a minimumbinding period of 1 year. Upward revision of the Contracted Capacity maybe allowed during the validity of the binding period of the ContractedCapacity. The revised Contracted Capacity in such cases apply for a minimumperiod of 1 year, provided PowerGrid is not required to install new oradditional equipment. Downward revision during a binding period will notbe allowed. A customer whose revised Contracted Capacity requiresPowerGrid to install new or additional equipment is considered as receivinga new temporary supply.
3.5 SUPPLY FOR POWER STATIONS
The UOS charge for transmission services provided to a power station whichdraws electricity supply through the generation connection is based only onenergy (kWh) units. The UOS charge applies to the sum of the net kWhimported half-hourly into the power station through the generationconnection and is based on the connection voltage.
The UOS charge for transmission services provided to a power station whichdraws electricity supply through a separate service connection is the sameas for a load and attracts a Contracted Capacity Charge based on the serviceconnection voltage.
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Energisation And Turn-On Procedures
The term “energise”, in the case of a customer’s installation that is directly connected tothe transmission system, refers to the closing of a circuit breaker or other isolatingdevice that is owned and controlled by PowerGrid. “Energisation”, “de-energisation”and “re-energisation” and all grammatical variations of the term shall be interpretedaccordingly.
Arrangements need to be made with SPSL for energisation of the service connectionand turn-on of a customer’s electrical installation. This is taken care of by the LEW. Thefollowing are arrangements needed by type of premises:
4.1 NON-DOMESTIC PREMISES (LOAD REQUIREMENT NOT EXCEEDING
45kVA), AND DOMESTIC PREMISES WHERE ELECTRICAL INSTALLATIONS
ARE PROVIDED AND PRE-INSPECTED OR PREVIOUSLY INSPECTED AND
ENERGISED
4.1.1 This category includes all new HDB apartments and dwelling units in someprivate residential developments where electrical installations are providedand inspected in advance. It also includes non-domestic premises (supplycapacity not exceeding 45kVA) and domestic premises where the existingelectrical installations and service connections are intact and only the supplyis required to be re-energised.
4.1.2 The customer has to open an account with SPSL for electricity serviceconnection (See 4.9.2).
4.1.3 The customer is given an appointment date for turn-on of service connection.This appointment date is normally the 4th working day from the date theaccount is opened. For electrical safety reasons, the customer or hisrepresentative must be present at the premises for the turn-on of electricityservice connection.
Energisation andTurn-On Procedures4
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Energisation And Turn-On Procedures
4.2 PREMISES WITH DIRECT CONNECTION
FROM POWERGRID’S TRANSMISSION SYSTEM
4.2.1 Domestic Premises (all load requirements)
4.2.1.1 The customer opens an account with SPSL, if an account has not alreadybeen opened (See 4.9.2).
4.2.1.2 Upon completion of the electrical installation and receipt of notificationfrom PowerGrid on energisation/readiness of the service connection, theLEW books an appointment with SPSL for inspection and turn-on of thecustomer’s installation. This is done by submitting the Certificate ofCompliance (COC) form (See 4.7.1).
4.2.1.3 The electrical installation is connected to PowerGrid’s transmission systemon the scheduled turn-on date if the electrical installation is safe to receiveelectricity supply. The LEW must be present during inspection of theelectrical installation by SPSL. For electrical safety reasons, the customer orhis representative must also be present at the premises for the turn-on ofelectricity service connection. A ‘PASS’ Inspection Report is issued by SPSLon-site upon successful turn-on of the customer’s installation.
4.2.2 Non-Domestic Premises
4.2.2.1 Load Requirement Not Exceeding 45kVA
4.2.2.1.1 The customer opens an account with SPSL, if this has not already been done(See 4.9.2).
4.2.2.1.2 Upon completion of the electrical installation and receipt of notification fromPowerGrid on energisation of the service connection, the LEW books anappointment with SPSL for inspection and turn-on of the electrical installation.This is done by submitting the COC form (See 4.7.1).
4.2.2.1.3 The electrical installation is connected to PowerGrid’s transmission systemon the scheduled turn-on date if the electrical installation is safe to receiveelectricity supply. The LEW must be present during inspection of theelectrical installation by SPSL. For electrical safety reasons, the customer orhis representative must also be present at the premises for the turn-on ofelectricity service connection. A ‘PASS’ Inspection Report for the customer’sinstallation is issued by SPSL on-site upon successful turn-on.
4.2.2.2 Load Requirement Exceeding 45kVA
4.2.2.2.1 The customer submits an application for an account (See 4.9.2) and meterinstallation Form CS/6 (Appendix 22.1) to SPSL if this has not already beendone, and applies for a licence from Energy Market Authority (EMA) to useor operate an electrical installation.
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Energisation And Turn-On Procedures
4.2.2.2.2 Upon completion of the electrical installation and receipt of notificationfrom PowerGrid on the readiness of service connection, the LEW must inspectand test the electrical installation before booking an appointment with SPSLfor energisation of service connection by PowerGrid. This is done bysubmitting the COC form (See 4.7.1).
4.2.2.2.3 The LEW in charge of the design, installation and supervision of work has toarrange for the LEW in charge of the operation of the installation and thecustomer (or his representative) to be present during the energisation.
4.2.2.2.4 The electrical installation is connected to PowerGrid’s transmission systemon the scheduled energisation date if the electrical installation is safe toreceive electricity supply. The LEW must issue a Certificate of Readiness(COR) form (See 4.7.2) to PowerGrid at site, prior to energisation of the serviceconnection.
4.2.2.2.5 Upon successful energisation of service connection to the customer’sinstallation from PowerGrid’s direct connection, all parties are toacknowledge on the Statement of Turn-On of Electricity (See 4.7.3).
4.3 BOOKING AN APPOINTMENT
4.3.1 Before booking an energisation and turn-on appointment, the LEW mustensure the following:
4.3.1.1 Metering requirements, where applicable, have been submitted and formalclearance has been given by PowerGrid’s Meter Section. All necessary metershave been installed.
4.3.1.2 The customer’s main incoming switchgear, protection system and earthingsystem have been successfully tested by an LEW. The HV metering panelhas been provided, and testing of the metering current transformers/voltagetransformers have been carried out and meters installed by Meter Section.
4.3.1.3 The service cables to the installation are ready to be energised.
4.3.1.4 An utilities account has been opened, a Connection Agreement has beensigned, and a security deposit for UOS has been paid by the customer.
4.3.1.5 A licence to use or operate the electrical installation, where applicable, hasbeen obtained from EMA.
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Energisation And Turn-On Procedures
4.3.1.6 For service connection at a system voltage level of 66kV and above, the finalclearance for the EHV switching procedure must be obtained from the PSOprior to the confirmation of the first energisation date.
Notes:(1) The EHV switching procedure must be jointly prepared and endorsed
by the LEW, who is authorised to perform EHV switching (at customer’sinstallation), and PowerGrid’s Project Engineer.
(2) For 66kV and above, the LEW must submit the COC form to PowerGrid’sProject Engineer.
4.3.2 Making An Appointment For Energisation Of Service Connection Direct
From PowerGrid’s Transmission System
4.3.2.1 Load Requirement Not Exceeding 45kVA
To make an appointment to turn-on electricity supply, the LEW or hisrepresentative submits the letter confirming the energisation of serviceconnection and the COC, and pays an inspection fee to SPSL. This is donein person at Supply Application Section of SPSL at 111 Somerset Road,#01-10 Customer Services Centre.
4.3.2.2 Load Requirement Exceeding 45kVA Up To 22kV Supply Voltage
An appointment for energisation of electricity service connection of loadrequirements greater than 45kVA and up to 22kV supply voltage can be madeas follows:
To make an appointment in person to energise the service connection, theLEW or his representative submits the letter confirming the readiness ofservice connection and the COC to SPSL’s Installation Section at 7th storey,St James District Office, Telok Blangah Road.
Alternatively, the LEW can submit the Application for Appointment forEnergisation of the Service Connection By Fax (Appendix 23) to InstallationSection.
4.3.2.3 A lead-time of 14 business days is required for the LEW to request for theenergisation of PowerGrid’s service connection and turn-on of the customer’sinstallation.
4.3.2.4 Energisation of service connection involves several parties. An officer atSPSL’s Installation Section co-ordinates with PowerGrid for the energisationof the service connection for supply taken directly from PowerGrid’stransmission system.
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Energisation And Turn-On Procedures
4.4 PREMISES WITH INDIRECT CONNECTION
(I.E. PREMISES IN A MULTI-METERED DEVELOPMENT)
4.4.1 Load Requirement Not Exceeding 45kVA
4.4.1.1 The customer opens an account with SPSL (See 4.9.2) if this has not alreadybeen done.
4.4.1.2 The customer submits an Application for Inspection of Electrical Installation(Appendix 8) to SPSL through the LEW together with a Letter of Consentfrom the Landlord/Management Corporation or HDB (Appendices 3 and 4).The LEW can also book an appointment for inspection of the electricalinstallation at the time of submission of the application and, in the meantime,proceed to carry out the wiring/extension work. The procedure of bookingan appointment is as in 4.3.2.1 above.
4.4.1.3 The LEW is responsible for arranging the energisation of the serviceconnection with the relevant party responsible where connection is takenvia the landlord’s switchboard – such as in HDB, JTC or other private multi-metered buildings.
4.4.1.4 Service connection will be turned-on on the scheduled inspection date ifthe electrical installation is safe to receive electricity supply. The LEW mustbe present during the inspection. A ‘PASS’ Inspection Report for the customerinstallation will be issued on-site upon successful turn-on. The LEW mustissue a Statement of Turn-On of Electricity and this must be acknowledgedby the relevant parties.
4.4.2 Load Requirement Exceeding 45kVA (Multi-Metered Building Scheme)
4.4.2.1 When the premises is ready for installation of meters, the LEW/customermust submit an Application Form for Account Opening with Security Depositpayable, together with Form CS/7 (Appendix 22.2), and sign an agreementwith SPSL.
4.4.2.2 The LEW shall proceed to liaise with PowerGrid’s Meter Section to have themeters installed.
4.4.2.3 SPSL then advises the LEW to proceed to apply to EMA for an EI Licencebefore the supply is turned on.
4.4.2.4 After the meters are installed, the LEW must submit a copy of the COC andconfirm the activation date (which is the proposed turn-on date) with SPSL.
4.4.2.5 The LEW is responsible for arranging the energisation of the serviceconnection with the relevant party where the connection is taken via thelandlord’s switchboard – such as HDB, JTC or private multi-meteredbuildings.
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Energisation And Turn-On Procedures
4.4.2.6 The landlord’s LEW will issue the Statement of Turn-On of Electricity uponsuccessful turn-on.
4.4.2.7 Contestable customers must subscribe and install a dedicated telephone lineper metering point to be used for the purpose of remote metering.
4.5 MODIFICATION TO AN EXISTING ELECTRICAL INSTALLATION
4.5.1 Modification work (e.g. extension, rewiring, shifting of meter) carried out toan existing electrical installation where a licence to use or operate is notrequired, must be inspected by SPSL before the new/modified portion of thewiring can be used.
4.5.2 The LEW must submit an application for inspection (Appendix 8) by SPSLfor the modified electrical installation.
4.6 LICENCE TO USE OR OPERATE AN ELECTRICAL INSTALLATION
4.6.1 For service connection to non-domestic premises, residential buildings andcondominiums with an approved load greater than 45kVA, and temporaryconnection for building construction and engineering work, irrespective ofconnection load, the customer must obtain a licence from EMA to use oroperate the electrical installation.
4.6.2 It must be noted that PowerGrid cannot energise the service connection untilsuch a licence is issued to the customer.
4.7 CERTIFICATES AND STATEMENTS
FOR FIRST ENERGISATION OF SERVICE CONNECTION
4.7.1 Certificate Of Compliance (COC)
4.7.1.1 The LEW must ensure that the electrical installation complies with therequirements of the Electricity Regulations, Singapore Standards CP5,relevant technical requirements and all other applicable standards. Thiscompliance must be made in the COC form (Appendix 37). The COC formmust be submitted to PowerGrid through SPSL when requesting for anenergisation appointment.
4.7.2 Certificate Of Readiness (COR)
4.7.2.1 The LEW has to certify the readiness of the installation. This certificationmust be made in the COR form (Appendix 21). The LEW must hand over theCOR form to PowerGrid’s Project Officer on the actual date of firstenergisation.
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Energisation And Turn-On Procedures
4.7.3 Statement Of Turn-On Of Electricity
4.7.3.1 Immediately after the successful first energisation of the service connection,PowerGrid will issue a Statement of Turn-On of Electricity (Appendix 38).All parties are to acknowledge by signing the form. The completed formwill be given to all parties and a copy forwarded to SPSL.
4.8 LEAD-TIME FOR APPLICATION FOR SERVICE CONNECTION
4.8.1 The timely provision of electricity supply to a development involves thejoint efforts of SPSL, PowerGrid, and the customer and his agents, such asthe LEW. While SPSL and PowerGrid will make every effort to engineer andimplement the connection scheme, it is at the same time essential for thenew customers and their agents to play their part such as the early submissionof applications and plans, the acceptance of terms and conditions ofconnection including making the necessary payments and the complianceof the necessary PowerGrid or Transmission Code requirements.
4.8.2 As a guide for the customer and his agents, the normal lead-times for thevarious events are listed on the following page. Depending on the progressand completion time of precedent events, the actual completion dates ofevents leading to the energisation of the service connection may need to bereviewed and adjusted.
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Energisation And Turn-On Procedures
NORMAL LEAD-TIME FOR ENERGISATION OF SERVICE CONNECTION UP TO 22kV
Installation with Existing
Service Connection not Non-domesticExceeding 45kVA or Installation with New Connection New Connection
Domestic Premises Existing Service from PowerGrid’s from NewPre-inspected Inspection Connection Low Voltage Mains Substation
Installation or Required Exceeding 45kVAReconnection
Submission of NA 14 days* 4 weeks 3 months 6 months
application to SPSL
Submission of substation NA NA NA NA 5 1/2 months
plans to PowerGrid
Acceptance of Agreement 4 days 14 days 14 days 7 weeks** 11 weeks*
Handover of substation NA NA NA NA 10 weeks*
to PowerGrid+
Opening of account
with SPSL 4 days 14 days 14 days 14 days 11 weeks
Arrangements to inspect NA 10 days NA NA NA
customer’s installation
(not exceeding 45kVA)
by SPSL
Application to EMA NA NA 10 days 10 days 10 days
for licence to use or
operate an electrical
installation
Request for energisation NA NA 14 days 14 days 14 days
of service connection
* These are critical events. Failure to adhere to the schedule may result in delay in the turn-on ofsupply.
** For connection by underground cable, PowerGrid will have to seek road opening approval fromthe relevant authorities before cable work can commence. The approval process usually takes about3 weeks. Depending on the length of cable to be installed, supply will normally be available 4 to 6weeks from the date customer’s premises is ready to receive the service cable.
+ Energisation of service connection will normally take place within 10 weeks of handing over ofsubstation. This lead-time may vary from case to case, depending on the customer’s schedule.
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Energisation And Turn-On Procedures
4.9 NOTES TO BE READ IN CONJUNCTION WITH APPLICATION PROCEDURE
4.9.1 Licensed Electrical Worker
4.9.1.1 Under the Electricity Act, the design and installation of an electricalinstallation may be undertaken by the following categories of LEWs:
Supply Capacity of
Electrical Workers Installation Voltage
Electrician Not exceeding 45kVA Not exceeding 1,000VElectrical Design: Not exceeding 1,000VTechnician Not exceeding 150kVA
Install:Not exceeding 500kVA
Electrical Engineer No limit No limit
4.9.1.2 The customer should appoint an LEW appropriate to the capacity and voltageof the proposed installation, and inform SPSL immediately of any change ofLEW during the course of the project.
4.9.2 Opening An Account
4.9.2.1 Before supply to an installation can be turned-on, the customer must openan account with SPSL. An application to open an account for electricitysupply can be made either personally, through the post or Internet. A sampleof the Application(s) for the Supply of Water, Electricity and/or Gas andGIRO forms to be completed are shown in Appendix 6 and Appendix 7respectively.
4.9.2.2 Application in person can be made at SPSL’s Customer Services Centre, UpperFirst Storey, 111 Somerset Road #01-10, Singapore Power Building; or atSPSL’s Application Counter at Woodlands Civic Centre #02-06, 900 SouthWoodlands Drive, Singapore 730900.
Applications through the post should be addressed to:Manager (Customer Services Branch)SP Services LtdP O Box 341 Orchard Post OfficeSingapore 912312
4.9.2.3 The following documents must be shown at the time of application in person:
4.9.2.3.1 Identity Card/Passport of owner/tenant/authorised signatory*
4.9.2.3.2 Copy of Business/Company Registration Certificate*
4.9.2.3.3 Documentary proof of occupation of premises, e.g. rent receipt or sales letterfrom HDB confirming the purchase of the premises
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Energisation And Turn-On Procedures
4.9.2.3.4 Bank account book to effect GIRO deduction from the account
* applicable for account in company’s/organisation’s name
4.9.2.4 For applications submitted through the post, copies of the above-mentioneddocuments must be enclosed.
4.9.2.5 An initial deposit is payable on opening an account. Customers may call theCustomer Enquiry Auto-Link (U-Link) at 1800-7380038 to enquire about theopening and closing of accounts.
4.9.2.6 For domestic premises, the deposits are as follows:
TYPE OF PREMISES DEPOSIT
GIRO Non-GIRO
Customers Customers
HDB 1/2 rooms S$ 40 S$ 60HDB 3/4/5 rooms S$ 70 S$ 100HDB Executive/HUDC/Terrace S$ 100 S$ 150Private Apts/Semi-Detached/Condo S$ 150 S$ 250Bungalow/Penthouse/Townhouse S$ 250 S$ 400
4.9.2.7 The deposit for non-domestic premises varies according to the electricityload required, the estimated water consumption, the floor area and type ofoperations. For enquiry on the amount of deposit required, customers cancall 1800-2356841.
4.9.3 Handover Of Completed Substation
4.9.3.1 The handover of substation to PowerGrid for installation of equipment is akey event, which determines the earliest date when supply can be madeavailable.
4.9.3.2 One week prior to the intended handover of the substation, the LEW mustsubmit a Request to Handover Substation form (Appendix 5) to SeniorManager (Customer/Distribution Projects), PowerGrid. Before this is done,the LEW must ensure that the customer/developer has accepted the termsand conditions of connection, including the payment of necessary charges.
4.9.3.3 It must be emphasised that PowerGrid will take over the substation onlywhen it is completed in accordance with plans and specifications approvedby PowerGrid and the relevant authority. It is particularly important that theaccess to the substation must be clear and passable for transportation ofheavy equipment.
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Energisation And Turn-On Procedures
4.9.3.4 Floor frames are needed for some types of switchgear. Prior to the final renderingof the switchroom floor, the LEW is to notify the project engineer-in-charge tomake arrangements for the floor frame to be installed, if it is necessary.
4.9.3.5 Requirements on handover of a completed transmission substation are givenin General Requirements for EHV Substation (Appendix 17).
4.9.4 Installation Of Current Transformer Operated Meters
4.9.4.1 For supply capacity exceeding 75kVA, current transformer operated metersare required. The LEW is required to provide the three metering currenttransformers and a pre-wired metering panel on the customer’s intakeswitchboard complete with Meter Section approved type test block, 6A 10kAMCB and pilot lamps and metering cables to the busbars.
4.9.4.2 On the day the LEW arranges with SPSL for a date for energisation of theservice connection, he should also bring the letter of appointment forenergisation of the service connection to Meter Section to arrange for theinstallation of meters.
On the appointed day of meter installation, the LEW or his representativemust be present to provide a 230V 13A single phase supply for testing of themeters.
4.9.5 Procedure For Application For Licence To Use
Or Operate An Electrical Installation
4.9.5.1 General
4.9.5.1.1 Under the Electricity Act, electrical installations in non-domestic premises,residential buildings and condominiums with an approved load greater than45kVA are required to be licensed. In addition, certain premises classifiedas engaging in dangerous trades, are also required to be licensed even thoughthey may have approved electrical loads not exceeding 45kVA.
4.9.5.1.2 Application forms for electrical installation licences are available at EnergyMarket Authority, 111 Somerset Road, #11-06, Singapore Power Building,Singapore 238164, or via the EMA website at www.ema.gov.sg.
4.9.5.2 Conditions For The Issue Of The Licence
4.9.5.2.1 Conditions for the issue of the electrical installation licences are governedby EMA.
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Energisation And Turn-On Procedures
4.9.5.2.2 The minimum grade of LEW required to take charge of the electrical or supplyinstallation is determined by the total approved load. The grades of ElectricalWorkers and their authorisation conferred under the respective EMA licencesare:
Grades of Authorisation
Electrical Workers Design Maintain/Operate
Electrician 45kVA 45kVATechnician 150kVA 500kVAEngineer No limit Subject to licence conditions
4.9.5.3 Submission Of EMA Forms
4.9.5.3.1 The relevant application forms are to be completed and submitted to EMAwith the necessary licence fees through the LEW in charge of the electricalinstallation. This must be done no later than 2 weeks before the date of theturn-on of the electricity supply.
4.9.5.3.2 The validity of the licence is for a period of 12 calendar months.
4.9.6 Procedure For De-Energisation/Disconnection Of Service Cables
4.9.6.1 De-Energisation Of Service Cable For Maintenance Purpose
4.9.6.1.1 The LEW who needs to de-energise an existing service cable for the purposeof maintenance or upgrading of the customer’s installation must submit theADRE form to PowerGrid 7 business days in advance (Appendix 19).
4.9.6.1.2 The SDRE form (Appendix 20) must be used to ensure the service cable issafely isolated after de-energisation and fit to be energised before re-energisation. Both PowerGrid’s officer in-charge and the LEW must dulycomplete and sign Part I and Part II of the form after de-energisation andbefore re-energisation of the service cable respectively.
4.9.6.2 Disconnection Of Service Cables Upon Closing Of Account
4.9.6.2.1 The customer must close the account with SPSL.
4.9.6.2.2 The customer must write to SPSL for disconnection of service cables andremoval of electricity meters.
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Customer’s Installation Requirements
5.1 REQUIREMENTS FOR HV AND LV CONNECTION (22kV AND BELOW)
5.1.1 Short-Time Withstand Current Ratings Of Switchgear
5.1.1.1 For electrical installations taking electricity supply directly from PowerGrid’snetwork, the customer’s main supply incoming switchgear must comply withthe following short-time withstand current ratings:
5.1.1.1.1 For supply at 22kV– 25kA for 3 sec
5.1.1.1.2 For supply at 6.6kV– 20kA for 3 sec
5.1.1.1.3 For supply at low voltage:a) Single-Phase 230V– 6kA for supply capacity up to 15kVA– 9kA for supply capacity more than 15kVA and up to 23kVA
b) 3-Phase 400V– 9kA for supply capacity up to 75kVA– 25kA, 3 sec for supply capacity more than 75kVA and up to 180 kVA– 36kA, 3 sec for supply capacity more than 180kVA
Note: The 3-second duration is not applicable to switchgear incorporatingdirect acting tripping devices.
5.1.1.2 For electrical installations taking electricity supply from the landlord’s ormanagement corporation’s electrical installations, the LEW in-charge mustensure that the customer’s main supply incoming switchgear is capable ofwithstanding the prospective short-circuit current at the connection point.
Customer’sInstallation Requirements5
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Customer’s Installation Requirements
5.1.2 Protection Requirements
5.1.2.1 Typical schemes and the protection requirements for a customer’s HV andLV main incoming switchgear taking electricity supplies from PowerGrid’ssystem are shown in Appendix 18. It must comply in general to conditionsas set out in the Transmission Code, Section 6.3 and Appendix F3.
5.1.2.2 For electrical installations taking electricity supply from the landlord’s ormanagement corporation’s electrical installations, advice on protectionrequirements must be sought from the LEW responsible for the respectivelicensed electrical installation.
5.1.2.3 Protection Requirement For 22kV And 6.6kV Customer Connection
The main protection for the 22kV and 6.6kV customer connection must bepilot wire differential protection. The current transformers of ratio 500/5must be of Class X and the CT secondary star-point must be towards theprotected line. The standard overcurrent/earth fault setting for the incomeris shown in Appendix 18.
The LEW of the customer installation is responsible for:
5.1.2.3.1 proper specification, setting/commissioning of the protection system at thecustomer incomers, and
5.1.2.3.2 ensuring that the 22kV circuits within the customer installation are equippedwith unit protection for fast fault clearance, inclusive of fault at cableterminations.
5.1.2.4 Protection Requirement For LV Supply Connection
The customer's incoming circuit breaker shall be set according to the approved load. For
approved load exceeding 300A, external overcurrent relays of IDMTL or DTL characteristics
and earth fault protection (DTL) must be provided at the incoming switchgear. The current
transformer must be of Class 5P10, 15 VA or better. Details are shown in Appendix 18.
5.1.2.5 Every low voltage electrical installation of supply capacity exceeding 75kVA must be provided with short-circuit protection in the form of directacting trip element at the incoming switchgear as follows:
Approved Load Direct Acting Trip Setting
Above 1500A Up to 4,500A400A < Approved Load < 1,500A Up to 3,200A260A < Approved Load < 400A Up to 2,400A200A < Approved Load < 260A Up to 2,000A200A and below Up to 1,200A
Alternatively, a backup HRC fuse may be used in place of direct acting trip.
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Customer’s Installation Requirements
5.2 REQUIREMENTS FOR EHV CONNECTION (230kV AND 66kV)
5.2.1 Short-Time Withstand Current Ratings Of Switchgear
For electrical installations taking electricity supply directly from PowerGrid’snetwork, the customer’s main supply incoming switchgear must comply withthe following short-time withstand current ratings:
5.2.1.1 For 230kV switchgear– 63kA (1 sec)
5.2.1.2 For 66kV switchgear– 40kA (3 sec)
5.2.2 Protection Requirement For 66kV And 230kV Customer Connection
5.2.2.1 General
5.2.2.1.1 The protection system for the connections has to comply in general to theconditions as set out in the Transmission Code.
5.2.2.1.2 All circuits connected to PowerGrid’s transmission network, inclusive ofbusbars for 230kV and above, must be provided with unit protection for fastfault clearance.
5.2.2.1.3 Engineering details and protection settings will be discussed with thecustomer during the project implementation.
5.2.2.1.4 The relays used for a unit protection scheme, and the characteristics of itsassociated current transformers should be matched. For reason ofobsolescence or availability, the type of protection relays and the protectionschemes is subject to review and confirmation during the consultation period.
5.2.2.1.5 Wherever applicable, signalling equipment is to be provided for tele-protection function and for end-to-end transfer of intertrip and interlocksignals.
5.2.2.1.6 Generally, the star-point of the current transformer secondary circuit mustbe towards the protected object/zone.
5.2.2.1.7 Generally, the location of the current transformers for the circuit and that ofthe installation’s busbar protection system for 230kV and above must beoverlapped across the circuit breaker to eliminate protection blind zone.
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Customer’s Installation Requirements
5.2.2.1.8 Current transformers supplied for unit protection must be rated in accordancewith IEC 60044 Part 1 & 6, BS 3938. They must be adequately dimensionedand of an accuracy class meeting the specified relay’s requirement. Thecharacteristic of the current transformers installed at both ends of theconnected circuit must be closely matched with each other to ensure stability.
5.2.2.2 The settings for the backup protection for the 66kV customer incomer mustgenerally be as follows:
RECOMMENDED RELAY SETTING FOR 66kV CUSTOMER INCOMER
Protection Relay General Setting
Overcurrent Protection CT Ratio SettingFeeder Circuit (1,000/5) 150% 0.15
( 800/5) 200% 0.15Feeder Transformer Circuit (1,000/5) 100% 0.20 Hi-Set: 27A(for 75MVA transformer) ( 800/5) 125% 0.16 Hi-Set: 34AEarth Fault ProtectionFeeder Circuit (1,000/5) 10% 0.10
( 800/5) 15% 0.10Feeder Transformer Circuit N/A(for 75MVA transformer)
Notes:– The co-ordinated setting for the backup protection is applicable to the standard
protection scheme proposed for a feeder or feeder-transformer type customerconnection and is applicable to radial feed connection only (Refer to Appendix 18).
– The overcurrent and earth fault setting are subject to periodic review by PowerGrid.
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Metering Requirements
6.1 GENERAL
6.1.1 All metering requirements must comply with EMA’s Metering Code.PowerGrid will determine the location where the supply line terminates inthe premises, based on ease of accessibility to SPSL and PowerGrid personnel.
6.1.2 The developer or customer bears the cost of providing and maintaining themeter boards, miniature circuit breakers (MCBs), isolators and wiring forinstallation of meters. The meters are supplied and maintained by PowerGrid.
6.1.3 Meters can be mounted on any of the following types of meter boards:
6.1.3.1 Teak board or any hardwood board chemically treated against attacks bytermites. Plywood should not be used. The meter board must be at least20mm thick and rigidly fixed with a minimum of 4 fixing screws.
6.1.3.2 Metal panel with nylon inserts accurately positioned to accommodate themeter.
6.1.3.3 Glass reinforced polyester base fitted with nylon inserts accurately positionedto accommodate the meter.
If item 6.1.3.2 or 6.1.3.3 is provided, PowerGrid’s Meter Section has to beconsulted on the locations of the nylon inserts.
6.1.4 The LEW must ensure that all metering requirements are complied with,and submit, at the planning stage, all relevant drawings on meter locations,meter board size, meter rooms, meter compartments/riser ducts/cupboard,etc to Meter Section for approval. Sample units of each approved type ofmeter compartment/riser duct/cupboard and meter board must be providedfor final inspection and approval by Meter Section before meters are installed.
MeteringRequirements6
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Metering Requirements
6.1.5 If the doors of centralised meter rooms, meter gate posts, meter compartments/riser ducts/cupboards, etc are to be locked, they must be fitted with locksetswhich can be opened with one of the following master keys:
6.1.5.1 Abloy master key code reference MK 911047
6.1.5.2 Chubb (Union) master key code reference G1HBG
6.1.5.3 Yale master key code reference MK48
The doors of meter rooms/compartments must be able to be opened from theinside without the need to use a key or other devices/tools.
6.1.6 All access doors to meter rooms/compartments/riser ducts/cupboards, etcmust have a clear access opening of at least 600mm (width). The doors mustbe fitted with door knobs or handles.
6.1.7 Security access systems installed in any premises must not impede accessby SPSL and PowerGrid personnel.
6.2 LOCATION OF METER
6.2.1 General
6.2.1.1 The service board accommodating PowerGrid’s service MCBs and metersmust be located near the termination of the service line. The meter/serviceposition must be easily accessible at all times to SPSL and PowerGridpersonnel for maintenance and reading of meters.
6.2.1.2 Meters must be installed in a safe location where they will not be damagedor be a cause of danger to personnel (viz, in a clean and dry location, notexposed to weather, mechanical damage, vibrations, extremes of temperatureor dampness).
6.2.1.3 The height of the meter on the meter board must be between 1.0m and 1.8mabove ground level, and the depth of the compartment for installation ofmeters must be between 200mm and 300mm.
It is advisable that the service board is housed in an approved box of non-combustible high-impact material to give added protection to the meteringequipment and enhance safety.
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Metering Requirements
6.2.2 Grouping Of Meters
Meters must be installed outside each tenant unit for ease of meter reading,maintenance, etc. Where this is not possible for practical reasons, metersmay be grouped together in easily accessible centralised meter rooms ormeter compartments/riser ducts/cupboards in multi-metered premises (e.g.residential, office, shopping or industrial high-rise building/complex).
6.2.3 Meters In Meter Compartments/Riser Ducts/Cupboards
6.2.3.1 Meters are to be grouped on the same floor as the tenant units.
6.2.3.2 There may be more than one group metering location on each floor.
6.2.3.3 There must be adequate lighting in the group meter location to facilitatemeter installation/maintenance and meter reading.
6.2.3.4 Meter boards in meter compartments/riser ducts/cupboards must be suchthat meters can be mounted facing the doors.
6.2.3.5 All meter compartments/riser ducts/cupboards where meters are installedare to be clearly and permanently labelled. Tenant unit numbers on permanentlabels must be fixed adjacent to their respective meters.
6.2.3.6 Meter compartments/riser ducts/cupboards housing the meters must haveclear glass windows provided on the doors, if these are locked, for ease ofmeter reading. The window for each meter must not be less than 200mm(W) x 300mm (H) x 6mm (thickness) and must be correctly positioned infront of where the meter is to be installed. Plastic windows and UV resistantpolycarbonates are not acceptable. Full glass doors are not acceptable.
6.2.4 Meters In Centralised Meter Rooms
6.2.4.1 The height of the meter board or panel must be such that meters can bemounted with the highest row not exceeding 1.8m above floor level and thelowest row not less than 1m above floor level.
6.2.4.2 There must be standing space of at least 700mm in front of the meter panel.However, if the meters are mounted on a free-standing panel, a clearance of700mm all round the panel is required.
6.2.4.3 The meter board or panel must be rigidly and vertically mounted. The doorsof the panel must be hinged.
6.2.4.4 The meter room must not be used as a storeroom.
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Metering Requirements
6.2.5 Meters Installed In Landed Properties
6.2.5.1 The meters and service cables must be installed in a weatherproofcompartment located at the gate pillar or perimeter wall. For supply capacityup to 100A 3-phase, the technical requirements for this compartment are asgiven in Appendix 24. For supply capacity greater than 100A 3-phase wherea CT-operated meter will be installed, the LEW has to submit the technicalrequirements to Meter Section for approval.
6.2.5.2 If there is no gate pillar or fencing around the perimeter of the landedproperties, meters must be installed inside a weatherproof meter box/compartment and easily accessible to SPSL and PowerGrid personnel. Metersmust not be installed inside the house.
6.3 METER/SERVICE BOARD SPECIFICATIONS (SINGLE-PHASE AND 3-PHASE
SERVICES, NOT EXCEEDING 100A PER PHASE)
The meter/service board for PowerGrid’s service MCBs and meters must beas specified in Section 6.1.3 and in accordance with the drawings inAppendices 25, 26 and 27.
6.4 WIRING, LAYOUT OF METERS, MCBS, ETC IN CENTRALISED METER
ROOMS, METER COMPARTMENTS/RISER DUCTS/CUPBOARDS
6.4.1 All wiring leading in and out of the group meter location must comply withSS CP5. The landlord’s wiring must be segregated from the tenant’s wiring.
6.4.2 Meters are to be mounted together with their associated service MCBs/neutralconnectors such that each meter can be visually identified with its associatedservice MCBs. Each meter position must be clearly labelled according to thetenant unit number. There should be a space of 70mm between verticallymounted meters.
6.4.3 Meters are to be mounted in neat vertical columns and/or horizontal rows.
6.4.4 Service MCBs must be sealable. MCBs must be clearly labelled according tothe tenant units served. The labelling must also correspond to the labelsused for the meters.
6.4.5 All wiring on the meter boards from service MCBs/neutral connectors to themeters and from the meters to the customer’s main switches must be neatlyrun on the surface – horizontally and/or vertically.
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Metering Requirements
6.5 SUBMISSION OF LAYOUT PLANS
The layout of the meter rooms, meter compartments/riser ducts/cupboardstogether with the meter board drawings and plans of the units served, mustbe submitted at the planning stage by the LEW for approval by Meter Section.
6.6 METERS FOR 3-PHASE LOW VOLTAGE CONNECTION
(EXCEEDING 100A PER PHASE)
6.6.1 Meters for connections exceeding 100A per phase are operated from meteringcurrent transformers and are to be fixed on a pre-wired metering panel onthe customer’s main switchboard. However, where the length of theconnecting leads are not excessive, the pre-wired metering panel may, withthe prior approval of Meter Section, be wall-mounted away from the mainswitchboard or in a separate meter room. The pre-wired metering panel withMeter Section approved type test block, 6A (10kA) MCB, pilot lights andmetering cables to the busbars and the three metering current transformers,must be provided by the customer. Drawings of the meter panel can beobtained from Meter Section at St James District Office, Telok Blangah Road.
6.6.2 Meter Panel Compartment Specifications
6.6.2.1 Meter panels must be of mild steel of at least 1.6mm thickness or othermaterials subject to approval by Meter Section.
6.6.2.2 The panels must be detachable and of a size given in Appendix 28.
6.6.2.3 The compartments must have a minimum depth of 100mm between coverand base.
6.6.2.4 There must be openings with appropriate bushing for the meter wires.
6.6.2.5 The cover must have at least 3 hinges and be able to swing and open out atleast 90o.
6.6.2.6 Facilities for sealing must be provided. Methods of sealing are illustrated inthe drawings in Appendix 29.
6.6.3 Meter Installation Requirements
6.6.3.1 The switchboard must be complete and securely mounted in its final positionbefore meters can be installed.
6.6.3.2 The top of the meter panel must not exceed 2.0m from the ground.
6.6.3.3 A 50mm x 50mm trunking of metal or other approved material between theswitchboard and the meter panel must be provided to house the meter cablesif the latter is installed away from the customer’s main switchboard.
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Metering Requirements
6.6.3.4 A 6.0mm tap-hole plus screw/washer on each busbar must be provided tofacilitate connection of the voltage cables to the meter voltage coils.
6.6.3.5 If the meter panel is away from the customer’s main switchboard, sealable30A HRC fuse for each phase and a sealable 3-pole ganged MCB of 6A 10kArating must be provided on the front of the switchboard panel near themetering CT enclosure for the protection of the meter voltage wiring. TheMCB must be appropriately labelled.
6.6.3.6 Mounting of metering current transformers must be as follows:– Current transformers must be mounted on jumpers for easy installation.– Bakelite clamps must be provided to secure the meter current transformers
in position.– Adequate insulation between the metering current transformers and the
busbar must be provided.– The metering current transformers and meter voltage tap off points must
be installed after the incoming connection main protection currenttransformers.
6.6.3.7 Enclosure
A rigid enclosure of mild steel plate of thickness not less than 1.6mm mustbe provided solely for housing the metering current transformers and voltagetap off points. The enclosures must have facilities for sealing. A typicalconstruction of the enclosure is shown in Appendix 30.
6.7 HIGH VOLTAGE/EXTRA HIGH VOLTAGE METERING
6.7.1 General Requirements
6.7.1.1 The customer is required to provide, install and maintain, at his own expense,current transformers, voltage transformers, a pre-wired metering panel withtest blocks, MCBs, pilot lamps and accessories, at his receiving HVswitchboard. These must meet PowerGrid’s requirements. Drawings of themetering panel can be obtained from Meter Section at St James District Office,Telok Blangah Road.
6.7.1.2 All metering current and voltage transformers must be used solely forPowerGrid’s revenue metering equipment. No other apparatus of the customeris permitted to be connected to such metering current and voltagetransformers. However, a voltmeter may be allowed to be connected via a100mA fuse (sealable) subject to approval by Meter Section.
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Metering Requirements
6.7.1.3 The customer must also provide a metering kiosk to be located close to wherethe metering current and voltage transformers are installed, such that theroute length of the cables from the current and voltage transformers to themetering kiosk does not exceed 10m. Where this cannot be complied withbecause of site constraints, the LEW must consult Meter Section concerningthe type and size of cables to be provided and installed by the customer.
6.7.1.4 The requirements for the kiosk are given in Appendices 31 and 32. Theaccess to the metering kiosk must be from outside the HV switchroom andfitted with any one of PowerGrid’s approved master lock series as specifiedin Section 6.1.5.
6.7.1.5 The customer must provide an appropriate metering panel of a size given inAppendix 33 and install a 50mm x 50mm trunking of metal or other approvedmaterial between the customer’s HV switchboard and the metering paneltogether with the required type and size of cables.
6.7.1.6 Facilities for sealing connections of all metering wire termination at thecustomer’s HV switchboard must be provided.
6.7.1.7 A schematic and wiring diagram of the customer’s switchboard must besupplied to facilitate installation of the meters.
6.7.2 Specifications For Metering Current Transformers
6.7.2.1 The customer will provide two metering current transformers of 30VA burdenfor 66kV connection or 15VA burden for connection at 6.6kV or 22kV. Thesemust be of accuracy class 0.5 complying with SS 318 or IEC 60044-1.
6.7.2.2 The current transformers are to be installed on the red and blue phases atthe cable end for each of his receiving switchboard. The current transformerratio will be determined by PowerGrid based on the customer’s loadrequirement. For connection at 230kV, the LEW will liaise with Meter Sectionon metering requirements.
6.7.2.3 The rated short-time current rating must not be less than 63kA 1 second,40kA 3 seconds, 25kA 3 seconds or 20kA 3 seconds for connection at 230kV,66kV, 22kV or 6.6kV respectively.
6.7.3 Specifications For Voltage Transformers
6.7.3.1 For each of the customer’s receiving switchboard, one of the following voltagetransformers must be provided:
6.7.3.1.1 One unit 3-phase 66kV/110V, 22kV/110V or 6.6kV/110V voltage transformerof 100VA burden per phase, connected star-star with the yellow phaseterminal of the secondary winding earthed, or
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Metering Requirements
6.7.3.1.2 Three units single-phase,66kV 110V or 22kV 110V or 6.6kV 110V√3 √3 √3 √3 √3 √3
Voltage transformers of 100VA burden per phase, connected star-star withthe yellow phase terminal of the secondary winding earthed, or
6.7.3.1.3 Two units single-phase 66kV/110V, or 22kV/110V or 6.6kV/110V voltagetransformers of 180VA burden per phase, ‘V’ connected with the yellowphase terminal of the secondary winding earthed.
6.7.3.1.4 Voltage transformers must be of accuracy class 1.0 complying with BS3941or IEC 60186.
6.7.3.1.5 The secondary wiring of the voltage transformer must terminate in a sealableMCB incorporated in the switchgear panel. The MCB must be rated at 6A,110V, 50Hz with breaking capacity not less than 10kA and the terminals ofthe MCB must be able to accept cables of cross section up to 6mm2.
6.7.3.1.6 The voltage transformers must be fused and adequate stock of spare high-voltage fuses must be kept by the customer.
6.7.3.2 All metering current transformers and voltage transformers together withtheir manufacturers’ test certificates must be submitted for testing andapproved by Meter Section at least 2 weeks before connection is required.Voltage transformers at 66kV and 230kV are exempted from testing and onlythe manufacturer’s test certificates have to be submitted.
6.8 MASTER AND SUB-METERING SCHEME
All multi-metered premises will be metered under master- and sub-meteringarrangement. Each individual unit within the premises must be meteredindividually under their respective Sub-meter whereas the landlord or theowner of the premises will be metered under the Master-meter. The landlordor owner will pay the amount of electricity representing the differencebetween the amount of electricity consumed and registered by the Master-meter and the aggregate of the amount of electricity consumed by theoccupants of the individual units within the premises.
6.9 METERING REQUIREMENTS
6.9.1 Low Voltage Customer
6.9.1.1 Single Customer – More Than 75kVA
6.9.1.1.1 The customer will provide three metering current transformers (CTs) of 5VAburden and accuracy class 0.5 complying with SS 318 or IEC 60044-1 and thepre-wired metering panels on the customer’s intake switchboard. The pre-wired
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Metering Requirements
metering panel must be fitted with PowerGrid approved type test block, MCBand pilot lights and connected with metering cables to the CTs and busbars.The CTs together with their manufacturer’s test certificates must be submittedfor testing and approval at least 2 weeks before connection is required.
6.9.1.1.2 A request for appointment to fix meters should be made only after the LEWhas arranged with SPSL for a date to energise the service connection.
6.9.1.1.3 Meter Section will arrange to install the meters upon production of theenergisation appointment letter issued by SPSL and requires at least 4business days before the energisation of service connection date.
6.9.1.2 Multi-Metered Buildings
6.9.1.2.1 Submission of floor plans of building showing the locations of meteringkiosks, meter room, meter compartments/riser ducts/cupboards.
6.9.1.2.2 Submission of dimensioned metering layout showing the plan, front andside elevations of the meter boards/rooms/compartments/riser ducts/cupboards, etc.
6.9.1.2.3 Arrangements for sample units of each approved type of meter compartment/riser duct/cupboard and meter board to be inspected and approved by MeterSection before meters are installed.
6.9.1.3 Landed Housing Development
6.9.1.3.1 Submission of site plans of building showing the locations of metercompartments at gate pillars.
6.9.1.3.2 Submission of dimensioned metering layout showing the plan, front andside elevations of the meter compartments in the gate pillars.
6.9.1.3.3 Arrangement for sample units of each approved type of meter compartmentand meter board to be inspected and approved by Meter Section before metersare installed.
6.9.2 High Voltage/Extra High Voltage Customer
6.9.2.1 The revenue metering equipment will be installed at the customers’ end ofthe service connection. The customer will provide a suitable metering kioskat his intake station, and metering CTs and VTs for each of his receivingswitchboard. The metering CTs ratio will be based on declared demand asshown in 6.9.2.6.
6.9.2.2 The metering CTs and VTs are to be used solely for revenue metering purposes.The CTs and VTs up to 22kV supply are to be sent together with themanufacturer’s test certificates to Meter Section for testing and approval at
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Metering Requirements
least 2 weeks before supply is required. For supply at 230kV, the LEW has toliaise with Meter Section on metering requirements.
6.9.2.3 The VTs, after re-installation onto customer’s switchgear, have to be testedand phased out, and a test report as per Appendix 34 submitted to MeterSection for approval before installation of meters.
6.9.2.4 The customer will provide and maintain, at its own cost, a fixed telephoneline to the metering kiosk to be used exclusively for the purpose of remotemeter reading. This telephone line must be terminated in a standard telephonesocket at the metering kiosk. Provision of this telephone line must be madebefore installation of meters.
6.9.2.5 If the customer is unable to provide the fixed telephone line due to siteconstraint, a GSM line can be considered subject to approval by Meter Section.
6.9.2.6 Based on the contracted capacity stated in the application form, the customeris required to provide the correct metering CTs as follows:
Contracted Capacity CT Ratio
MW
22kV Service Connection 0.0 – 0.8 50/25/50.81 – 1.7 100/50/51.71 – 2.5 150/75/52.51 – 3.2 200/100/53.21 – 5.0 300/150/55.01 – 6.6 400/200/5
6.51 – 10.0 500/300/566kV Service Connection 0.0 – 5.0 100/50/5
5.01 – 10.0 200/100/510.01 – 20.0 400/200/520.01 – 30.0 500/300/530.01 – 40.0 800/400/540.01 – 80.0 1,000/500/5
6.10 CONTESTABLE CUSTOMERS
6.10.1 Eligibility
The eligibility of contestable customers are determined by EMA.
6.10.2 Additional Requirements For Contestable Customers
A contestable customer must provide and maintain at its own cost a fixedtelephone line to be used exclusively for the purpose of remote meter reading.The LEW must liaise with Meter Section for the location and termination ofthis telephone line.
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Appendices
■ Appendix 1
APPLICATION FORM For official use only FOR CONNECTION TO POWERGRID
TRANSMISSION SYSTEM Application Number. :
Date Received :
To : SP Services Ltd 111 Somerset Road #06-05 Singapore Power Building Singapore 238164
PART 1 APPLICANT’S DETAILS Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required to obtain supply from their landlord/MCST or HDB for HDB premises.
I request you to provide/upgrade the load connection service to my premises as given in Part II by my Licensed Electrical Worker undertaking the project
Name of Company/Applicant*: ________________________________________________ ROC/NRIC No: ________________ Name of Authorised Person & Designation* ___________________________________________________________________ Forwarding Address : ________________________________________________ Postal Code : Singapore______________
Tel : _________________ Fax : __________________ Mobile Phone : ____________________ Pager ________________
Email : _______________________ Signature of Applicant : _______________________________ Date : _______________
PART 2 INSTALLATION DETAILS – (To be completed by LEW)
Project Description : ________________________________________________________________________________________ Site Address : ___________________________________________________ Postal Code : Singapore ________________ Utility Account No (existing) : ______________________________ Existing Approved Load : _____________________ kVA/kW* Any previous Consultation? Yes / No* If Yes, please provide Consultation No : __________________
TYPE OF CONNECTION (Please tick appropriate box)
New Connection Upgrading the existing service cable Temporary Connection
Change of intake connection point
TYPE OF DEVELOPMENT (Please tick appropriate box)
Industrial Commercial Residential
Others (Please specify) : _______________________________________________________ Type of Business Activity (Brief Description) : __________________________________________ Voltage Sensitive? Yes / No *
LOAD REQUIREMENT (One intake connection point per premises)
Total load requirement (to include existing load, if any)
30A/60A/100A* 30A/60A/100A* __________ kVA at 400V three-phase 230V single-phase 400V three-phase
22kV 66kV/230kV* (min 1,700kW for 2 HV services, min 12,750 kW for 4 HV services) (min 25.5MW for 66kV,min 85MW for 230kV) Contracted Capacity of _____________________ kW at ________________________ kV via ___________ service cable(s). Initial Contracted Capacity of ________________kW (shall not be less than ¼ of the Contracted Capacity) for ______ months
(not exceeding 12 months) Total Load Requirement: ______________________________ kW (for multi-metered premises only)
For multi-tenanted installation with the exception of HDB residential installation, the metering scheme shall be designed as Master/Sub-metering scheme.
Target date of Energisation : ________/_________/__________ Estimated ultimate load _____________________ kVA/kW*
► 50
O TO BE COMPLETED FOR INSTALLATION EXCEEDING 45kVA
Total Land Area : ____________________________ m2 Gross Floor Area : _______________________________ m2
PLANS AND DETAILS (Mandatory)
1 copy of Architect’s site and location plan 1 copy of plan showing proposed customer’s intake connection point. Details of the type, floor area & designed load of individual premises for multi-metered premises
PART 3 LEW DETAILS
I confirm that the above information is correct and agree to advise SP Services should there be subsequent changes.
Name of Authorised LEW : __________________________________ Licence Number:__________________________________ Registered Forwarding Address :________________________________________________________________________________
_____________________________________________________ Postal Code : Singapore ________________________________ Tel : _____________________ Fax : __________________ Mobile Phone ______________________ Pager __________________
Email : ____________________________________________________________________________________________________
Signature of Authorised LEW ______________________________________________________ Date _______________________
* Delete where not applicable
► 51
Appendix 2 CONSULTATION FORM For official use only FOR CONNECTION TO POWERGRID
TRANSMISSION SYSTEM Consultation Number. :
Date Received :
To : PowerGrid Ltd 111 Somerset Road #08-05 Singapore Power Building Singapore 238164
CONSULTATION DETAILS Sub-metered consumers (tenants) are not eligible for this application. All tenants in multi-metered premises are required to obtain supply from their landlord/MCST or HDB for HDB premises.
Reference to the consultation, I hereby enclose one copy of site & location plans including proposed customer’s intake connection point Drawing No. ____________________________________________________________ for your advice on connection requirements.
SITE DETAILS
Connection Applicant/Developer* : _____________________________________________________________________________ Project Description : _____________________________________________________________________________ Site Location – Lot & Mk No : _____________________________________________________________________________
Street Name : __________________________________________________________ Blk/Unit No :_______________________
LOAD REQUIREMENT (One intake connection point per premises)
New Connection Upgrading the existing service cable Temporary Connection
Change of intake connection point Other Services (Please specify):________________________________________
Type of Premises : Industrial/Commercial/Residential/Others*_________________________Gross Floor Area(m2): _____________ Type of Business Activity (for non-residential premise only) : _______________________________ Voltage Sensitive? Yes / No * Existing Utility A/C No.(if any) : ________________________________ Existing Approved Load (kVA) : ________________________________ at 230V/400V/22kV/66kV/230kV* Load Requirement (kVA) : ____________________________________ at 230V/400V/22kV/66kV/230kV*
Target date of Energisation :__________/___________/__________ Previous consultation No. (if any) : _________________
Additional information : ______________________________________________________________________________________
______________________________________________________________________________________
LEW DETAILS I confirm that the above information is correct and agree to advise PowerGrid should there be subsequent changes.
Name of Authorised LEW : _____________________________________ Licence Number:_______________________________ Company Forwarding Address :________________________________________________________________________________
___________________________________________________________ Postal Code : Singapore __________________________ Tel : ______________________ Fax : __________________ Mobile Phone : _____________________ Pager : _______________
Email : ___________________________________________________________________________________________________
Signature of Authorised LEW ______________________________________________________ Date ______________________ * Delete where not applicable
52
■ Appendix 3
Form CS/3 Letter of Consent from the Landlord/Management Corporation
To: SP Services Ltd 111 Somerset Road #06-05 Singapore Power Building Singapore 238164 ELECTRICITY SUPPLY TO: ______________________________________________________________________________ (Full Address of the Customer)
FOR:___________________________________________________________________________________________________ (Name of Customer)
TOTAL LOAD ALLOWED FOR: __________________________________ AT _______________________________ VOLTS
________________________________________________________________________________________________________ PART I 1. I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the
abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex, and the total approved load to the entire building/complex will not be exceeded.
2. I have no objection for the abovementioned load to be connected to the rising/horizontal mains system/main switchboard of the
building/complex. 3. The Electrical Installation Licence No. of the building/complex is ______________________. 4. The electrical installation of the building/complex from which this load is to be connected is Unmetered (i.e. without Master Account) Metered under Master Account No. __________________________________. 5. I will check to ensure that the abovementioned installation is compatible with the electrical installation of the building/complex. ________________________________________________________ Date: _____________________________________ Signature of Licensed Electrical Worker Licence No:_______________________________________________ Tel No: ____________________________________ Name: ___________________________________________________ Address: _________________________________________________ ___________________________________________________________________________________________________________ PART II I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal mains system/main switchboard of the building/complex. ________________________________________________ Date: _______________________________ Signature of authorised person ________________________________________________ ____________________________________
Name Designation Official Stamp of the landlord/developer/management corporation
► 53
▲ 54
■ Appendix 4
FORM CS/3HLetter of Consent from the Housing & Development Board
To : SP Services Ltd
111 Somerset Road #06-05
Singapore Power Building
Singapore 238164
ELECTRICITY SUPPLY TO :
FOR :
TOTAL LOAD ALLOWED FOR : AT VOLTS
PART 1
1 I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the
abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex,
and the total approved load to the entire building/complex will not be exceeded.
2 I have no objection for the abovementioned load to be connected to the risiing/horizontal mains system/main switchboard of the building/
complex.
3 The Electrical Installation Licence No. of the building/complex is .
4 The electrical installation of the building/complex from which this load is to be connected is
■ Unmetered (i.e. without Master Account)
■ Metered under Master Account No.
5 I will check to ensure that the abovementioned iinstallation is compatible with the electrical installation of the building/complex.
Signature of LEW : Date :
Licence Number : Tel No :
Name :
Address :
PART 2
1 I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal/
mains system/main switchboard of the building/complex.
2 The HDB area code is
Date :
Signature of Authorised PersonFor and on behalf of Housing & Development Board
Name : Designation :
Full Address of the Customer
Name of Customer
▲ 55
■ Appendix 5
Request to Handover Substation
Date :
To : PowerGrid Ltd
111 Somerset Road #08-05
Singapore Power Building
Singapore 238164
Attn: Senior Manager
(Customer Projects – East/West/Distribution Projects)
Dear Sir
PROJECT : ELECTRICITY SUPPLY TO
1. In connection with the electrification scheme (SPSL Appln No : ________________ ), I wish to advise that the proposed PowerGrid substation
has been completed in accordance with plans and specifications approved by your Company and the Competent Authority.
2. I confirm that the structural Professional Engineer in-charge has certified that the substation structure is constructed according to the
approved plan to withstand the load specified by your Company.
3. I also certify that the electrical installation at the substation has been inspected and tested in accordance with the requirements of your
Company as follows:
a Earth value of electrode system is ______________ ohms.
b The continuity of each circuit protective conductor is satisfactory.
c All metal conduits have been bonded to earth.
d Polarity throughout the installation is correct.
e All single pole control devices are in live conductors only.
f The insulation resistance of the fixed wiring installation is ___________ Megaohm.
g All flexible cords, switches, fuses, plugs and socket outlets are in good serviceable condition.
h The installation includes ______________ Nos lighting points and _______________ Nos socket outlets.
4. I shall be obliged if you could send your representative for a joint site inspection on _____________________, and thereafter to takeover
the said substation.
Yours faithfully
Signature of Licensed Electrical Worker
Name :
Address :
Tel No :
NB : This form must be submitted one week prior to the date for joint site inspection, which shall normally
take place from 10 am to 12 noon.
▲ 56
■ Appendix 6
SP SERVICES LTD
(Acting for itself and as agent for and on behalf of Public Utilities Board and City Gas Pte Ltd for the supply of utilities)
APPLICATION(S) FOR THE SUPPLY OF WATER, ELECTRICITY AND/OR GAS
Name of Consumer ……………………………………………………………………… NRIC/Passport No. ………………………………
(personal or company) ……………………………………………………………………… Co Reg No. ………………………………
Co Reg Date ………………………………
Address of Premises for ………………………………………………………………………
which supplies are required ……………………………………………………………………… Contact Tel No. ………………………………
Fax No. ………………………………
Mailing Address
(if different from …………………………………………………………………………………………………………………………………
the Premises) …………………………………………………………………………………………………………………………………
1. I/We make application(s) for the following utilities:
■ Water supply from the Public Utilities Board ■ Electricity supply from SP Services Ltd ■ Gas supply from City Gas Pte Ltd
2. I/We agree that each application for a utility, when accepted, will constitute a binding contract between myself/ourselves and Public Utilities
Board/SP Services Ltd/City Gas Pte Ltd (as in the case may be) and I/We agree that each of such contract shall be separate and independent
from each other and shall be separately enforceable.
3. “In the event that I/We make an application for gas at a later date, I/We agree to be bound by the terms and conditions for supply of gas set out in
Part III overleaf and such other additional terms and conditions which City Gas Pte Ltd may, at its absolute discretion, notify and impose. I/We
understand that nothing herein shall be constructed as an offer by City Gas Pte Ltd to supply gas to me/us and that City Gas Pte Ltd has the
absolute discretion to reject my application for gas supply for any reason.”
4. I/We agree to be bound by the terms and conditions specified by each supplier as set out in Part I (Water Supply)/Part II (Electricity Supply)/
Part III (Gas Supply) overleaf.
…………………………………………………………………… ………………………………………………………………………………
Consumer’s Signature/Date Name, Designation & NRIC/Passport No.
Co Stamp (Where applicable) of Person signing for Company
FOR OFFICIAL USE
Name NRIC/Passport No.
Co Reg No.
Address Your A/C No.
Appointment for Turn-on of Supplies
Utility Date Time CC DCI BC FC Code Date
IF YOUR WATER METER IS OUTSIDE YOUR PREMISES, FOR ELECTRICITY TURN-ON, PLEASE WAIT FOR THE TECHNICIAN TO INSPECT THE
YOU NEED NOT BE PRESENT FOR WATER TURN-ON. PREMISES AT THE APPOINTED TIME UNLESS STATED ABOVE.
(“the Consumer”)
(“the Premises”)
▲ 57
■ Appendix 7
SP SERVICES LTDAPPLICATION FORM FOR INTERBANK GIRO
PART 1: FOR APPLICANT’S COMPLETION (fill in the spaces indicated with ❑ )
Date: Name of Billing Organisation:
❑ SP SERVICES LTD
To: Name of Bank: Utilities Account Holder’s Name:
❑ ❑
Branch: Utilities Account Holder’s Number:
❑ ❑
(a) I/We hereby instruct you to process SP Services’ instructions to debit my/our account.(b) You are entitled to reject SP Services’ debit instructions if my/our account does not have sufficient funds and charge me/us a fee for this. You may also
at your discretion allow the debit even if this results in an overdraft on the account and impose charges accordingly.(c) This authorisation will remain in force until terminated by your written notice sent to my/our address last known to you or upon receipt of my/our
written revocation through SP Services.
My/Our Name(s): My/Our Contact (Tel/Fax) Number(s):
❑ ❑
My/Our Bank Account Number: My Signature/Thumbprint:
❑ ❑
(As in Bank’s Records)
Bank Account Holder NRIC No / P/P No:
❑ Our Company Stamp/Signature
❑
(As in Bank’s Records)
PART 2: FOR SP SERVICES’ COMPLETION
Bank Branch SP Services’ Account No. Utilities Account No.
Bank Branch Account No. To Be Debited
PART 3: FOR BANK’S COMPLETION
To: SP Services Ltd
This Application is hereby REJECTED (please tick) for the following reason(s);
❑ Signature/Thumbprint# differs from Bank’s records ❑ Wrong account number
❑ Signature/Thumbprint# incomplete/unclear# ❑ Amendment not countersigned by customer
❑ Account operated by signature/thumbprint# ❑ Others:
Name of Approving Officer Authorised Signature Date
* For thumbprints, please go to the branch with your identification #please delete where inapplicable
■ Appendix 8 FORM CS/5 APPLICATION FOR INSPECTION OF ELECTRICAL INSTALLATION
For official use To: SP Services Ltd 111Somerset Road #06-05 APPLICATION NO:
Singapore Power Building Singapore 238164
PART I I/We, #Mr/Mrs/Miss/Messrs____________________________________________________________________________________ (# Delete as appropriate). (name of applicant/company)
Utility Account No :
_____________________________________________________________________________________________________
request you to provide an electrical installation inspection and install kWh meter. (Please tick if meter is required) Details of my/our application are as follows:
(Please fill in the appropriate box below)
An application for electricity supply service has been submitted earlier and approved. SP Services Application Reference No is: _______________________________________ OR
This is a new application with details as given in Part II by my/our Licensed Electrical Worker undertaking the project. (Form CS/3 or CS/3H shall be attached for supply connection from landlord’s or HDB’s electrical installation.) My/Our particulars:
NRIC number/Company ROC number: ___________________________________________________________________
Name of Authorised Person for Company:_________________________________________________________________ (if applicable)
Forwarding Address: _________________________________________________________________________________
________________________________________________________Postal Code: ______________
Tel:___________________ Fax : ___________________ Mobile phone: ___________________ Pager:_____________
Email: ____________________________ --------------------------------------------------- -------------------------------------------- Signature of Applicant Date
___________________________________________________________________________________________________________ PART II (INSTALLATION DETAILS - To be completed by Licensed Electrical Worker if there is no application submitted earlier) Project Description: ________________________________________________________________________________________
Site Address: ___________________________________________________________________Postal Code: ________________
Type of Application (Please tick the appropriate boxes) New Supply Temporary Supply Upgrading of Supply Downgrading of Supply Extension Rewiring Replacement of switchboard/switchgear Amalgamation Shifting of Meter
Conversion to Master/Sub Metering Scheme
Other Services (Please specify) ………………………………………………………………………………
► 58
■ Appendix 8
Landlord’s installation HDB’s installation Public Lighting Network
Supply PowerGrid Ltd’s (Form CS/3 is to be (HDB's endorsement (Form CS/3 PL is to be Connection from: installation/mains submitted) is required) submitted)
Type of Development: Industrial Commercial Residential Others Type of Business (Brief Description): ___________________________________________________________________ Total supply capacity (including existing requirement, if any) 30/40A# 230V 60A/80A/100A# 230V 30A/60A# 400V .............kVA single-phase single-phase three-phase at 400V three-phase (# Delete as appropriate) PART III DETAILS OF PROPOSED INSTALLATION OR EXTENSION. For HDB residential unit, erasure/amendment to any of the “QTY” figure below is NOT acceptable.)
QTY QTY
Lamp points 30/32A SPN ISO
13A socket outlets 30/32A TPN ISO
15A socket outlets Water Heater Points
15/16A SPN ISO Others
15/16A TPN ISO
20A SPN ISO
20A TPN ISO ( A completed Certificate of Compliance is required to be submitted if a new meter is required.)
Name of LEW : _____________________ LEW Licence No. : _____________ __________________________________ Signature of Licensed Electrical Worker Date : ______________________ Forwarding address (as registered with EMA): __________________________________ Fax No.: ____________________
_______________________________________________________________________ Contact No.: ___________________
Postal Code: ________________ __________________________________________________________________________________________________ PART IV Endorsement by HDB (applicable for HDB residentiaI premises) 1 I have checked the loading of the electrical installation of the abovementioned building/complex and hereby confirm that the abovementioned load requirement can be catered for from the rising/horizontal mains system/main switchboard of the building/complex, and the total approved load to the entire building/complex will not be exceeded. 2 I hereby give consent for the abovementioned customer to tap electricity supply of a capacity indicated above from the rising/horizontal mains system/main switchboard of the building/complex. _______________________________________ Name/designation/signature of authorised person Date: ___________________ for and on behalf of Housing & Development Board
► 59
▲ 60
■ Appendix 9
Types and Layout of Substation
The type of substation required will depend on the customer’s load requirement. SPSL shall endeavour to provide the requirement
of the substation within 10 business days following the receipt of the application form.
Typical layout plans and details for substations of the independent building type are given in Appendices 11 to 14.
As a guide, the types of substations applicable for the various load requirements are as follows:
The functional requirements of the substation structure, however, must be complied with. For example, the minimum clear
height of the cable chamber and switchroom must be 1.5m and 3.1m respectively even if the substation is integrated into a
multi-storey building.
Subject to the layout and access being suitable, the customer may incorporate the substation as part of his main building. The
typical layout plans shown in this handbook depict only the functional requirements.
Primary Distribution Drawings
Voltage Applicable/Substation size
Up to 1,000 kVA at 400/230V 6.6kV Appendices 11
22kV Switchroom 7.6M x 6.2M x 5.6M
Transformer 4.0M x 4.5M x 3.6M
Up to 2,000 kVA at 400/230V 22kV Appendices 12
Up to 5,000 kW at 22kV 22kV Switchroom 6.9M x 6.2M x 5.6M
Load Requirement Type of rooms
▲ 61
■ Appendix 10
Submission of Substation Site and Design Plans
Before construction of the substation, the LEW shall submit to PowerGrid, 2 sets of plans showing the location of the proposed
substation in relation to the rest of the development and detailed layout plans for the substation. One set of plan will be
endorsed and returned to the LEW.
All plans/drawings to be submitted must be on appropriate A1 or A2 size paper and endorsed by the LEW responsible for the
planning, design and supervision of the installation. To facilitate processing, SPSL’s Application Reference Number must be
indicated in all submissions which shall be accompanied by a Checklist for Submission of Substation Plans (Appendix 15)
In the case of re-submission of plans, all amendments (addition/deletion/revision) made must be highlighted in the new set of
drawings and listed out in covering letters.
All plans are to be drawn to scale and dimensions used shall be in metric units.
It is the responsibility of the LEW in charge to ensure that all the requirements as endorsed on the drawings are incorporated
in the architectural and structural plans before construction work of the substation begins.
Substation Site Plans
These plans should show the location of the proposed substation(s) in relation to the surrounding area
and should include the following :
(i) The proposed substation(s)
(ii) The customer’s switchroom(s)
(iii) The proposed PowerGrid’s incoming cable and customer’s service cable routes
(iv) The orientation of other buildings within the development site
(v) The proposed driveway to the substation entrance (to be shaded in red)
(vi) The existing and proposed drains; and
(vii) North-East Gridlines or 2 NE survey coordinates.
Substation Design/Layout Plans
It is mandatory that the drawings must include :
1 The detailed requirements for the design of the substation are listed in Appendix 16. Unless explicit waiver is granted,
these requirements are to be incorporated in the architectural plans.
2 Plan, Front, Rear and Side Elevations of the substation and at least 2 cross-sections showing the surrounding roads,
cable chamber, switchroom beams and clear height, switchroom floor openings, transformer plinths and other pertinent
details.
3 Details of immediately adjoining upper floor, basement as well as adjacent space all around the substation shall be
depicted, if the substation is part of a larger building
▲ 62
■ Appendix 11
6.6KV/LV SUBSTATION
▲ 63
■ Appendix 11
6.6KV/LV SUBSTATION
▲ 64
■ Appendix 11
6.6KV/LV SUBSTATION
▲ 65
■ Appendix 11
6.6KV/LV SUBSTATION
▲ 66
■ Appendix 12
22KV/LV SUBSTATION
▲ 67
■ Appendix 12
22KV/LV SUBSTATION
▲ 68
■ Appendix 12
22KV/LV SUBSTATION
▲ 69
■ Appendix 12
22KV/LV SUBSTATION
▲ 70
■ Appendix 12
22KV/LV SUBSTATION
▲ 71
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOORFOR ELECTRIC SUBSTATION
▲ 72
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOORFOR ELECTRIC SUBSTATION
▲ 73
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOORFOR ELECTRIC SUBSTATION
▲ 74
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOORFOR ELECTRIC SUBSTATION
▲ 75
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOORFOR ELECTRIC SUBSTATION
▲ 76
■ Appendix 13
HEAVY ALUMINIUM LOUVRED DOORFOR ELECTRIC SUBSTATION
▲ 77
■ Appendix 14
GATE DETAILS
▲ 78
■ Appendix 14
GATE DETAILS
▲ 79
Proposal :
Name of Licensed Electrical Worker :
BP No (if any) :
Yes Not Applicable
1) Drawings are in A1 or A2 series. ■
2) Plan, front, rear and side elevations are included. ■
3) Cross-sections in relation to roads and immediate surroundings are included. ■
4) Detailed layout scales of 1:50 for all plans and 1:100 for all sections and elevations. ■
5) Substation requirements stated in Handbook on How to Apply for Electricity Connection ■
including latest updating are complied with.
6) Plans are signed by the Licensed Electrical Worker. ■
7) Proper vehicular access to the substation from main road is coloured. ■
8) I have advised the structural PE that substation structure is to be designed to ■
withstand the loading specified in the Handbook and all structural requirements
have been reflected in this submission.
9) All trenches/floor openings are not affected by any beam. ■
10) Required clear height (from underside of any beam) of all equipment rooms ■
and cable chamber are complied with.
11) No column within substation ■
12) No wet area above substation ■
13) Location of Customer’s Switchroom shown with proposed service cable route shown ■
14) I undertake to advise the architect and structural PE to ensure that all the requirements, ■
as endorsed, are incorporated into the architectural and structural plans prior to
substation construction
15) Previous drawings with PowerGrid’s comments are attached (for resubmission case) ■ ■
16) All additions/deletions/amendments are coloured ■ ■
17) Any encumbrances? ■ ■
Signature & Stamp of Licensed Electrical Worker Licence No Date
Note : Please tick in appropriate box for all items.
This checklist is to be submitted for every submission/re-submission.
■ Appendix 15
PowerGrid Ltd
CHECKLIST FOR SUBSTATION BUILDING PLAN SUBMISSION
▲ 80
Item Requirement
Cable Entry Ducts • Heavy duty 150mm dia. UPVC pipes in concrete jacket to be provided and terminated
300mm after the roadside drain.
• To be sealed with removable water-tight plugs at both ends of pipes.
• To have piling, if necessary.
Cable Entry Ramp • Cross Sectional views to be shown.
• 150mm wide removable hot-dipped galvanised mild steel gratings to be provided.
• Walls and floors to be plastered and rendered waterproof.
Cable Trenches • Sand filling to be carried out after cable installation.
• Depth of 900mm (no beams shall be allowed within/across the trenches).
• Openings to be covered by removable hot-dipped galvanised mild steel.
Switchgear Floor • Grating of 300mm width which is able to support at least 100 kg.
• To take a load of 1,600 kg per sq m. Floor beam is to be 200mm away from the HV floor
opening. All floor openings to be free of beam.
Switchroom • Louvred heavy duty aluminium door to Appendix 13.
Size: 2.9M X 1.8M wide nett for 22KV switchroom 2.7M X 1.8M wide nett for 6.6KV switchroom.
• Floor to have a 50mm thick cement rendering including a 20mm granolithic smooth finish of
cement, granite chips and sand in the ratio of 1:1:1 plus 9kg ironite or equivalent approved
hardener to each 45 kg of cement. For 22kV substations, final rendering of PowerGrid
switchroom floor to be done after installation of switchgear floor frame.
• Height: No part from floor to ceiling beams to be less than 3.1M. No column allowed within the
switchroom.
• Hot-dipped galvanised mild steel/stainless steel railing to be provided for stairs and loading
platform. (Removable type in front of door.)
• Hasp and staple (140m x 65m x 6mm) and door hinges to be of brass or stainless steel.
• Adequate natural lighting required. Provision of glass block in small modules.
• Ventilation panels to be installed at high level
Transformer Room • Noise level of 60 dB emitted from each transformer to be considered in the choice of location of
transformer yard.
• Adequate natural cross air ventilation required. Provision of PC vent block or Aluminium
ventilation panels.
• Each transformer plinth to be able to take a dead load of 6 tonnes.
• Door: 2.7M x 2.7M nett for each transformer. Heavy duty aluminium louvered doors to
Appendix 13.
• LV trench of 800mm min. width for every 2 transformers. Separate LV trench to be provided for
additional transformers.
• Hasp and staple (140mm x 65mm x 6mm) and door hinges to be of brass or stainless steel.
Wall/Column Finishes • All concrete surfaces shall be properly prepared and 20mm cement plastering work carried out
such that there should be no cracks, blisters and other defects.
• The emulsion painting system used for external walls shall be suitable for outdoor application.
There shall be a five (5) years warranty of the textured coating on all walls against all defects
arising from colour–fastness, faulty workmanship and/or materials, etc.
■ Appendix 16
PowerGrid Ltd
SUBSTATION LAYOUT REQUIREMENTS TO BEINCORPORATED IN THE ARCHITECTURAL PLANS
▲ 81
■ Appendix 16
Electrical Installation • Schematic layout to be shown.
• All wiring to be in surface conduits.
• Circuits to be controlled by miniature circuit breakers and ELCB.
• Isolators for battery chargers to tap supply by-passing ELCB.
• Substation to be adequately lit. Light fittings are to be installed at 3M (suspension in type)
and 2.4M (wall-mounting type) from floor level.
• Wire-mesh casing to be provided for light fittings installed in cable chamber.
• To label circuits at DB (distribution board) corresponding to the respective switches, sockets
and isolators, etc.
Cable Chamber • Trap door floor openings 760mm x 760mm leading to cable chamber to have:
‘Basement’ (where (a) hinged aluminium chequered covers complete with wall catch.
required) (b) cat ladders with 6 non-skip steps. Details as shown on drawings.
• Adequate natural ventilation required e.g. PC vent block/Aluminium vent panels.
– Height : 2.0m with no part less than 1.5m.
– To paint the front and back of all beam with 50mmH red luminous paint.
– Chamber floor to be ‘suspended’ type capable of supporting 400 kg/m2 (min).
• Floor level : 150mm above the immediate external final road or driveway level and above
highest flood level recorded. Wall and floor to be waterproofed and adequate drainage to be
provided, where necessary.
• Doors to be fitted with panic hardware and paint in red “Push lever down to open” on internal
side of door.
Metering Kiosks • To be provided for PowerGrid (see Appendices 31 to 33) when customer is taking HV supply.
Woodwork, Metal Work, etc • To be suitably painted and anti-termite treated for all woodwork.
Ceiling • To be of smooth finishes and emulsion painted. All beam to be encased in RC concrete.
Roof • To be of flat RC suitably waterproofed and laid to falls of 1:80 minimum.
• Roof eaves with multiple 150mm wide long slot openings to be incorporated for rain water to
free-fall direct into apron drain.
Drainage • Proper drainage around the substation to be provided with hinged hot-dipped galvanised m.s.
gratings.
Gate/Perimeter • To be 1.8m high and designed to blend aesthetically with the overall development.
Fencing (where required) • Hollow section anodised aluminium gates to Appendix 14.
• A 600mm wide concrete apron to surround the fence externally.
Access Road • To withstand heavy vehicles with laden load of 10 tonnes for all 22kV and 6.6KV substations.
• Width of driveway to be 4000mm (min) and surface to be properly paved.
• No car parking lots are to be drawn in such a way as to obstruct vehicular access to
substation.
NOTES : (a) Appointed project LEW is to liaise closely with Architect and Structural Engineer to obtain all their respective
requirements for incorporation into final layout plans submitted for PowerGrid’s endorsement.
(b) All dimensions and figures are to be checked by the Architect/structural engineer/appointed project LEW prior to
substation construction.
(c) If the Management Committee (MCST) were to subsequently replace the security personnel with other means e.g.
electronic security systems, etc; PowerGrid Ltd shall be consulted on the free access arrangement to the
substation.
(d) LEW/M&E consultants are to ensure that the proposed substation is constructed to PowerGrid approved plans.
Item Requirement
▲ 82
1. Where an application for supply of electricity necessitates the provision of a substation, the site shall be provided and
substation constructed by the applicant consumer at his own cost. The “Guidelines/Requirements for EHV Substation
Buildings” will be made available in PowerGrid’s service connection proposal to the applicant.
2. The applicant shall grant PowerGrid, its officers and agents an irrevocable licence at all times to have full and unrestricted
use of the substation and have free access thereto.
3. PowerGrid may utilize the substation and site in such manner as it deems fit. Subject to the applicant’s requirement
being fully provided for, PowerGrid shall be at liberty to use the substation for the purpose of supplying other customers
or for the improvement of the transmission network (e.g. upgrading, modification to substation structure, alteration and
addition works, etc.)
4. The substation site within the substation perimeter fence shall be intended solely for the substation development.
5. The substation structure may be an independent building or form part of a larger building. It shall be located at the 1st
storey level and must be readily accessible from the public road. Proper vehicular access to the substation shall be
provided for transportation of substation equipment by normal means, i.e. truck and trailer. The gradient of the access
road to the EHV substation site (66kV and above) shall not be more than 1:20.
6. There shall be no danger from flooding and fire hazards.
7. The substation site shall be free from all encumbrances (existing and future proposed services).
8. Suitable and proper cable access shall be provided on at least two sides of the substation site for all cables entering
and leaving the proposed site. If there is any roadside drain fronting/surrounding the substation site, the applicant
shall be required to install cable ducts under-crossing the drain. If the depth of the drain is more than 2.0 meters from
the proposed substation ground level, the cable ducts shall be installed to over-cross the drains with approval from the
relevant authorities.
10. The applicant consumer shall consider the effect of noise disturbance to neighboring development in its selection of
the substation site.
11. The site of the substation shall be approved by PowerGrid and the relevant authorities. The applicant shall ensure that
all necessary approval for the substation site be obtained from the relevant authorities.
12. The applicant shall consult PowerGrid on the substation site before commencement of detail design for the substation
building.
The applicant shall submit the necessary architectural and M&E design drawings, incorporating the necessary
requirements in the above-mentioned guidelines/requirements, for PowerGrid’s review and clearances. The applicant
shall also obtain the necessary clearances from the relevant authorities.
GENERAL REQUIREMENTS FOR EHV SUBSTATION(66KV AND 230KV ONLY)
■ Appendix 17
▲ 83
CUSTOMER’S 22kV AND 6.6kV MAIN INCOMING SWITCHBOARD
O/C – Overcurrent relay type IDMTL with 3/10 characteristics.
Plug Setting =100%, Time Multiplier=0.1.
E/F – Earth fault relay type IDMTL with 3/10 characteristics.
Plug Setting =20%, Time Multiplier=0.1.
PW – Pilot wire protection relay Solkor ‘R’/ ‘RF’, HOR 4, (For 22kV connection)
A – Ammeter
CB – Circuit breaker
To circuit breaker trip circuit
Notes :
1. Pilot wire protection CT shall comply with the following requirements:
a) Rated knee point voltage at maximum secondary turns not less than 80V.
b) Exciting current at the rated knee point voltage not more than 150mA.
c) Resistance of the secondary winding, corrected to 75oC not more than 0.15 ohm.
2. No other auxiliary device shall be connected to the pilot wire protection CTs. Pilot wire protection CT star – point shall
be towards protected line.
3. Where there is more than one incoming service, a bus-section breaker shall be provided and be electrically and
mechanically interlocked against parallel operation of the incoming services.
4. All 22kV circuits in the customer installation shall be equipped with unit-protection for fast fault clearance, inclusive of
fault at cable terminations.
■ Appendix 18
PROTECTION REQUIREMENTS FOR CUSTOMER’S22KV and 6.6 KV MAIN INCOMING SWITCHGEAR
REVENUE METERS
PILOT WIRE TO PG’SSWITCHGEAR
METERING CTs/PTs TOPG’S REQUIREMENTS
500/5CLASS 5P20 15VAOR BETTER
PW
INCOMINGSUPPLY
CB
R Y B
500/5CLASS X
M
oc
oc
oc
E/FA
▲ 84
■ Appendix 18
X
R Y B N
CLASS 5P10 15VAOR BETTER
INCOMING SUPPLY
KWH REVENUE METER
E/F
o
o
o
c
c
c
METERING CTs
C
PROTECTION REQUIREMENTS FOR CUSTOMER’SLV MAIN INCOMING SWITCHGEAR
CUSTOMER’S LV INCOMING SWITCHBOARD
O/C – Overcurrent relay type IDMTL with 3/10 characteristics or DTL relay. For DTL relay, the setting shall be 100% of
approved load with a time lag of not more than 0.5 sec. For IDMTL relay, the plug setting shall be 100% of approved
load with a time multiplier of 0.1(or 0.2 for approved load more than 1.5kA and up to 2.2kA and with source from
PG’s 22kV substation).
E/F – Earth fault relay operating at primary fault current of 20% of approved load subject to a maximum of 120 Amp with
time lag of not more than 0.5 second.
Note: LEW is reminded that under CP5, the overall ohmic resistance of earthing system should not exceed one
ohm. The maximum earth fault current setting shall be equal to 50V divided by the earth resistance value.
CT – Current transformer Class 5P10, 15VA or better.
CB – Circuit breaker with adequate breaking capacity and circuit breaker using shunt trip shall be provided with series
trip (Direct acting trip) device that operates with no time delay under short-circuit condition, or with HRC fuses in
series.
– To circuit breaker trip circuit.
Note :
Where there is more than one incoming service, a 4-pole bus-section breaker shall be provided and be mechanically interlocked
against parallel operation of the incoming services.
▲ 85
■ Appendix 18
PowerGrid66kV S/S
87L
87L
PowerGrid’sScope
Customer’sScope
Customer66kV S/S
Feeder Main 1(plus Main 2 ifSource S/S)
Pilot/OFCMarshallingBox
Interfacepoints
TYPE 1: CUSTOMER 66KV FEEDER CONNECTION(WITHOUT EMBEDDED GENERATION PLANT)
Type 1a: Supply from PowerGrid 66kV Source Substation
Numerical Relay System (OFC) (see note iii)
Feeder Main 1 LFCB102
Feeder Main 2 7SD511/REL316*4
Inter-tripping LFCB102
Remote End Interlock (on ES & DS) Mechanical
Electromechanical Relay System(Metallic pilot wire) (see note iii)
Feeder Main 1 Solkor - Rf
Feeder Main 2 Translay S
Inter-tripping Solkor-Rf
Remote End Interlock (on ES & DS) Mechanical
Type 1b: Supply from PowerGrid 66kVNon-Source Substation
Numerical Relay System (OFC pilot wire) (see note iii)
Feeder Main 1 LFCB102
Inter-tripping LFCB102
Remote End Interlock (on ES & DS) Mechanical
Electromechanical Relay System(Metallic pilot wire) (see note iii)
Feeder Main 1 Solkor - Rf
Inter-tripping Solkor-Rf
Remote End Interlock (on ES & DS) Mechanical
Notes :
i) All electromechanical feeder protection relays are to be
equipped with supervision and guard relays.
ii) Engineering and Protection details shall be discussed on
application.
iii) For reason of obsolescence or availability, the type of relays
and protection schemes shall subject to review and
confirmation during the consultation period.
iv) Customer to supply and install pilot marshalling board of
approved design to accommodate the optic fibre cables and
other auxiliary cables.
v) Intertrip scheme where applicable shall be implemented via
the main protection system.
▲ 86
TYPE 2: CUSTOMER 66KV FEEDER CONNECTION(WITH EMBEDDED GENERATION PLANT)
Type 2a: Supply from PowerGrid 66kVSource Substation
Numerical Relay System (OFC) (see note iii)
Feeder Main 1 LFCB102
Feeder Main 2 7SD511/REL316*4
Inter-tripping NSD70D
Remote End Interlock Mechanical &(on ES, DS & CB) Electrical (NSD70D)
Switching sequencing NSD70D
Electromechanical Relay System(Metallic pilot wire) (see note iii)
Feeder Main 1 Solkor - Rf
Feeder Main 2 Translay S
Inter-tripping NSD70C
Remote End Interlock Mechanical &(on ES, DS & CB): Electrical (NSD70C)
Switching sequencing: NSD70C
Type 2b: Supply from PowerGrid 66kVNon-Source Substation
Numerical Relay System (OFC) (see note iii)
Feeder Main 1 LFCB102
Inter-tripping NSD70D
Remote End Interlock Mechanical &(on ES, DS & CB) Electrical (NSD70D)
Switching sequencing: NSD70D
Electromechanical Relay System(Metallic pilot wire) (see note iii)
Feeder Main 1 Solkor - Rf
Inter-tripping NSD70C
Remote End Interlock Mechanical &(on ES, DS & CB) Electrical (NSD70C)
Switching sequencing: NSD70C
Notes :
i) All electromechanical feeder protection relays are to be
equipped with supervision and guard relays.
ii) Engineering and Protection details shall be discussed on
application.
iii) For reason of obsolescence or availability, the type of relays
and protection schemes shall subject to review and
confirmation during the consultation period.
iv) Customer to supply and install pilot marshalling board of
approved design to accommodate the optic fibre cables and
other auxiliary cables.
■ Appendix 18
87L
87L
NSD70
PowerGrid66kV S/S
Customer66kV S/S
PowerGrid’sScope
Customer’sScope
Feeder Main 1(plus Main 2 ifSource S/S)
For inter-trippingand remoteelectrical interlock
Pilot/OFCMarshallingBox
Interfacepoints
NSD70
▲ 87
Type 3a: Supply from PowerGrid 66kVSource Substation
Numerical Relay System (OFC) (see note iii)
Feeder Main 1 LFCB102
Feeder Main 2 7SD511/REL316*4
Inter-tripping LFCB102
Remote End Interlock Mechanical(on ES & DS & T/F neutral)Electromechanical Relay System(Metallic pilot wire) (see note iii)
Feeder Main 1 Solkor - Rf
Feeder Main 2 Translay S
Inter-tripping NSD70C
Remote End Interlock Mechanical(on ES & DS & T/F neutral)
Type 3b: Supply from PowerGrid 66kVNon-Source Substation
Numerical Relay System (OFC) (see note iii)
Feeder Main 1 LFCB102
Inter-tripping LFCB102
Remote End Interlock Mechanical
(on ES & DS & T/F neutral)
Electromechanical Relay System(Metallic pilot wire) (see note iii)
Feeder Main 1 Solkor - Rf
Inter-tripping NSD70C
Remote End Interlock Mechanical
(on ES & DS & T/F neutral)
Notes :
i) All electromechanical feeder protection relays are to be
equipped with supervision and guard relays.
ii) Engineering and Protection details shall be discussed on
application.
iii) For reason of obsolescence or availability, the type of
relays and protection schemes shall subject to review and
confirmation during the consultation period.
iv) Customer to supply and install pilot marshalling board of
approved design to accommodate the optic fibre cables
and other auxiliary cables.
v) Intertrip scheme shall be implemented via the main
protection system or the signalling equipment.
TYPE 3: CUSTOMER 66KV FEEDERTRANSFORMER CONNECTION
■ Appendix 18
87L
87L
87T
PowerGrid66kV S/S
PowerGrid’sScope
Customer’sScope
Customer22kV S/S
Include REF,TF Diff, OC/EF& other localprotection system
Pilot/OFCMarshallingBox
Feeder Main 1(plus Main 2 ifSource S/S)
Interfacepoints
▲ 88
Supply from PowerGrid 230kV Substation
Numerical Relay System (OFC) (see note ii)
Feeder Main 1 Current Differential
Feeder Main 2 Current Differentialwith Distance Protection
Teleprotection NSD70D
Inter-tripping NSD70D
Remote End Interlock Mechanical &(on ES, DS & CB) Electrical (NSD70D)
Switching sequencing NSD70D
Notes :
i) Engineering and Protection details shall be discussed on
application.
ii) For reason of obsolescence or availability, the type of
relays and protection schemes shall subject to review and
confirmation during the consultation period.
iii) Customer to supply and install pilot marshalling board of
approved design to accommodate the optic fibre cables
and other auxiliary cables.
TYPE 4: CUSTOMER 230KVFEEDER CONNECTION
■ Appendix 18
87L
87L
NSD70
NSD70
Interfacepoints
Pilot/OFCMarshallingBox
For teleprotectioninter-tripping andremote electricalinterlock
PowerGrid230kV S/S
PowerGrid’sScope
Customer’sScope
Customer230kV S/S
Main 1 andMain Two
▲ 89
Supply from PowerGrid 230kV Substation
Numerical Relay System (OFC) (see note ii)
Feeder Main 1 Current Differential
Feeder Main 2 Current Differential withDistance Protection
Teleprotection NSD70D
Inter-tripping NSD70D
Remote End Interlock Mechanical &(on ES, DS & CB) Electrical (NSD70D)
Switching sequencing: NSD70D
Notes :
i) Engineering and Protection details shall be discussed on
application.
i) For reason of obsolescence or availability, the type of
relays and protection schemes shall subject to review and
confirmation during the consultation period.
iii) Customer to supply and install pilot marshalling board of
approved design to accommodate the optic fibre cables
and other auxiliary cables.
TYPE 5: CUSTOMER 230KVFEEDER TRANSFORMER CONNECTION
■ Appendix 18
PowerGrid230kV S/S
87L
87L
87T
NSD70
NSD70
Main 1Main 2
For teleprotectioninter-tripping andremote electricalinterlock
Pilot/OFCMarshalling Box
Interfacepoints
Customer66kV S/S
Customer’sScope
PowerGrid’sScope
Include T/F Diff,REF, OC/EF& other localprotection system
■ Appendix 19
► 90
APPLICATION FOR DE-ENERGISATION / RE-ENERGISATION (ADRE)
Licensed Installation No
Service No Voltage
Name of Installation:
Address of Installation:
Requested De-energisation Requested Re-energisation
Date Time *am/pm Date Time *am/pm
Contestable Customer :
*Yes / No
#Name of Customer : #MSS A/C No : #Name of Retailer:
To: *Sr Manager (EHV Network)
*Sr Manager (Regional Network – *West / Central / East / North / South) *Sr Manager (Customer Project- *East / West) *Sr Manager (Distribution Projects) (1) I, the undersigned LEW for the above installation, wish to apply for a *de
at the time stated above. My work, after the de-energisation, will involve t
*1 Routine Servicing
2
(2) * I / or (Name / Licence N
Regulation Division of EMA) will attend to the *de-energisation / re-ener
(3) I understand that: - (a) No work is to be carried out on the service cable until both Power
signed the SDRE (“Statement for De-energisation and Re-energisisolated the service cable at both ends.
(b) I am required to be on time on the approved date of de-energisatwhich the PowerGrid officer may cancel any appointment made.
Signature : Telephone/HP No.: Name : Date : Licence No : *Grade: E T E Notes : (a) All requested date and time are subject to PowerGrid’s approval.
(b) For non-contestable customers, this form should reach PowerGrid 7 business(c) For contestable customers, this form should reach PowerGrid 14 business da(d) For urgent work on Sundays / Public Holidays and after office hours, LEW
PowerGrid personally. (e) * Delete whichever is not applicable. (f) # To be filled in for contestable customer.
Section Fax No Tel NoEHVN 62909124 62909121RNW 66609390 66609301RNC 62799590 62799501RNE 62409203 62409218RNN 67653745 63146172RNS 62909110 62909101CPE 62409225 62409257CPW 62799532 62799559DP 62909140 62909139
-energisation/re-energisation he following:
(Please Specify)
o of appointee approved by gisation PERSONALLY.
Grid officer and myself have ation”) after we have safely
ion or re-energisation, failing
ngineer echnician lectrician
days before the requested date. ys before the requested date. is required to co-ordinate with
■ Appendix 20
POWERGRID LTD A No. 00001
STATEMENT FOR DE-ENERGISATION AND RE-ENERGISATION (SDRE) Part I & II concern the de-energisation and re-energisation of the service cable specified below. Each statement is valid only when it is signed by both the LEW of the installation and the POWERGRID officer-in-charge of the de-energisation or re-energisation. Name Of Installation: _________________________________________________________________________ Service Cable No. : *1 / 2 / 3 / 4 Isolated From (Substation Name, OG Box, Etc): ____________________________________________________ This de-energisation is *due to tripping / requested by PowerGrid / requested by LEW. * - please delete whichever is not applicable PART I : DE-ENERGISATION STATEMENT (TO BE SIGNED AFTER DE-ENERGISATION) (This statement is required only when work is to be done on the service cable by either the LEW or the PowerGrid officer, or both) Date: Time: DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the above service cable has been turned-off and safely isolated from the customer's intake switchboard. Signature: Name: Licence No. DECLARATION BY POWERGRID OFFICER: I, the undersigned POWERGRID officer, hereby declare that the above service cable has been de-energised and safely isolated from the PowerGrid’s network. Signature: Name: Section: PART II : RE-ENERGISATION STATEMENT (TO BE SIGNED BEFORE RE-ENERGISATION) Date: _____________________ Time: DECLARATION BY LEW: I, the undersigned LEW, hereby declare that the customer's switchgear, to which the above mentioned service cable is connected, is cleared of all earthing leads, labour and tools, and that the switchgear is fit for re-energisation from the POWERGRID’s end with effect from the time specified above. I undertake to ensure that no work by any person will be carried out on the service cable at the customer's end until a new de-energisation statement is signed by both parties. Signature: Name: Licence No. ACKNOWLEDGEMENT BY POWERGRID OFFICER: Signature: Name: Section: PART III : DECLARATION BY LEW ON THE TIME OF TURN-OFF AND TURN-ON OF INCOMING SUPPLY AT CUSTOMER’S INTAKE SWITCHBOARD (for Contestable Customer only) TO : SP SERVICES LTD (Fax no: 68206800, tel no: 68238288) Name of Customer : _________________________________________ MSS A/C No : ______________ Address of Installation : _______________________________________________________________________ DECLARATION BY LEW: I, the undersigned LEW, hereby declare that I had turned-off and turned-on the incoming supply at the customer’s intake switchboard at the following date / time: Date of Turn-Off : __________________ Time of Turn-Off : __________________ Date of Turn-On : __________________ Time of Turn-On : __________________ Signature: Name: Licence No.
► 91
■ Appendix 21 CERTIFICATE OF READINESS
FOR THE ENERGISATION OF SERVICE CONNECTION
Name of Customer Installation:
Address:
Customer Installation Licence No/Expiry Date:
Connection Voltage:
Approved Load:
Name of Connection Cable(s): Owned by Connection Applicant (Yes / No)
MSS Account No:
Name of Retailer:
Certification By LEW I, ______________________(name) the undersigned LEW, hereby certify that the service connection*, the equipment and works at the above installation (Licence No: ______________) are now ready and fit for energisation with effect from the date and time specified below. Date:
Time: I certify that:
a. protection details are as follows**:
CT Ratio: /1A or 5A* Short-Time Withstand Current Ratings of Main Supply Incoming Switchgear_______KA for 3 sec Main 1 Type: Main 2 Type*: Direct Acting Tripping Setting: ______________ O/C Type: Setting: E/F Type: Setting:
b. the switching equipment/transformer/service connection* and all associated apparatus
related to the service connection have been tested and checked by me and they have passed the pre-commissioning checks and tests in compliance with the Market Rules, Transmission Code, Handbook on How to Apply for Electricity Connection, Connection Agreement, all other applicable standards, and the associated protection systems have all been proven effective.
c. The main protection schemes for the service connection have been commissioned by
load simulation method on date: ______________**
d. *for multi-metered installation with the exception of HDB residential installation, the metering scheme has been designed as master/sub-metering scheme.
* Delete where not applicable ** To indicate NA where protection scheme is not applicable
► 92
■ Appendix 21
e all necessary meters have been installed.
f. the safety coordination requirements of the Transmission Code have been fully complied
with.
g. all workmen have been withdrawn and warned that it is no longer safe to continue to work on the equipment without a ‘Permit-to-work (PTW)’, and that all tools, scaffolding, ladders, construction materials including any temporary local earthing connections have been removed from the equipment, and all protective screens or guards, if any, have been securely fixed and the appropriate warning signs displayed and that all keys, if any, necessary for the isolation and operation of the equipment have been handed to me.
h. all circuit earth on equipment to be energised are removed.
i. equipment to be energised in this request (the diagram must clearly indicate the portion
of the equipment to be energised. If space is insufficient, please provide diagram as attachment) is shown below:
Name & Signature of LEW responsible for the design of the customer installation/ operation of the electrical installation#
Licence No. Date
# applicable for re-energisation of service connection only
► 93
■ Appendix 22.1 FORM CS/6
REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER FOR NEW SUPPLY UNDER DIRECT SUPPLY FROM POWERGRID (CONTESTABLE CUSTOMER)
For offici al use
CMS Installation no. ________________
PART I Customer Details – To be completed by LEW Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________
NRIC/Company ROC:_______________________________________________________________________ Application no.: _______________________________ Type Of Business: _____________________ Site Address as given by IRAS :________________________________________________________________
(You are required to enclose a copy of the IRAS letter.) Telephone point(s)/No(s). : _____________________________________________________________________ (For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the meters)
Supply Capacity :____________________kVA at ___________ Volts Telephone No. : ____________________ Pager/Handphone No. : ____________________________________
Name of LEW : ____________________________ LEW License no. : ________________ Telephone no. : _____________ Handphone no. : ______________ Facsimile no. : ___________________ Signature : __________________________________ Date : _________________________
*Note: LEW shall be informed of MSSL account no. after meters have been installed. LEW shall apply for license to operate electrical installation before proceeding to Installation Section to book for turn on appointment date.
_____________________________________________________________________________________________
PART II (For official use) To: Meter Reading Branch, SP Services Ltd Facsimile no.: __________
Meter Serial No. Opening Meter Reading Installation Date Date : ______________ Data Entered by: ________________________ Signature : _________________
(Full Name)
____________________________________________________________________________________________ PART III (For official use)
To: Customer Services Section(MSSL), SP Services Ltd Facsimile no.: 6820 6800 Create MSSL Account no. : ______________________ LEW has been notified of MSSL account no. Date : ______________ Account Opened by: ________________________ Signature : _______________ (Full Name) ► 94
■ Appexdix 22.2 Form CS/7 REQUEST FOR INSTALLATION OF ELECTRICITY KWH METER (FOR LOAD EXCEEDING 45KVA) UNDER MULTI-METERED BUILDING SCHEME
For official use Serial No.: ____________________
Electricity Installation Number ___________________
PART I Customer Details – To be completed by LEW
Name of Customer(Mr/Mdm) /Company(Messrs): _________________________________________________
NRIC/Company ROC:________________ Name of Contact Person for Company: _______________________
Telephone No. : ____________________ Pager/Handphone No. : ___________________________________
Site Address for Installation of Meter: ___________________________________________________________
Telephone point(s)/No(s). : ___________________________________________________________________ (For contestable customer, you are required to install telephone point(s) adjacent to the meter panel before applying for the installation of the meter panel) A/c no.: : _________________________ Master A/c no.: __________________________
(For non-contestable customer only) (For non-contestable customer only)
Supply Capacity :___________kW at ___________ Volts Type of Business: ______________________ (Form CS/3 or CS3/H and COC shall be submitted together with this form)
Details of Landlord/MCST
Name of Landlord/MCST: _______________________________ Landlord’s Account no. : ___________________
Forwarding Address : _______________________________________________________Postal Code ________
Name of LEW in charge of landlord’s electrical installation : ____________________________________________
Contact no of Landlord’s LEW : __________________________________________________________________
_____________________________________________________________________________________________
Name of LEW : ___________________ LEW Licence no. : _________________
Forwarding Address (as registered with EMA) : ____________________________________Postal Code_________
Telephone no. : _____________ Handphone no. : ______________ Facsimile no. : ___________________
Signature : __________________________________ Date : _________________________ ____________________________________________________________________________________________
PART II (For official use) To: Meter Section, PowerGrid Ltd Facsimile no.: 62777 008
Meter Serial No. Opening Meter Reading Installation Date Date : ______________ Data Entered by: ________________________ Signature : _____________________ (Full Name)
► 95
■ Appendix 22.2 PART III (For official use)
To: Supply Application, SP Services Ltd
For Non-Contestable Customer : -
Check and perform Master-sub Tagging
Sent to CRO for account move in on ____________
Move in/ Turn-On Date is on ______________ ► 96
▲ 97
■ Appendix 23
APPLICATION FOR APPOINTMENT FOR ENERGISATIONOF SERVICE CONNECTION BY FAX
Facsimile Transmittal Sheet
To : Manager, Installation Branch From : (Name of LEW)
Company : SP Services Ltd Company :
Fax No : 62777044 Fax No :
Date : Office Tel :
Application No : Pager / Handphone No :
*SPSL/MSSL a/c ref : Approved Load :
Total no of pages (including this page) :
I, (LEW’s name) (EMA Licence No.) would like to make an appointment for
energisation of service connection to
(site address)
The applicant is a *contestable/non-contestable customer.
The following documents are faxed together with this application.
Documents Tick if applicable
1) Opening of Account with SPSL
2) Opening of Account with Electricity Retailer/MSSL (for contestable customer)
3) Confirmation of meters already fixed (for contestable customer)
4) Electrical Installation License issued by EMA
5) Certificate of Compliance (original to be submitted to PowerGrid’s project officer)
I will submit the Certificate of Readiness on site, failing which service connection shall not be energised and PowerGrid Ltd
shall not be liable for any losses arising therefrom.
I understand that the date of appointment is subject to confirmation by SP Services Ltd and the appointment date shall not
be earlier than 4 business days from this fax date. The preferred appointment dates are as follows:
1st choice : Date Time: Morning/Afternoon * (* delete whichever not applicable)
2nd choice : Date Time: Morning/Afternoon *
3rd choice : Date Time: Morning/Afternoon *
Name & Signature of LEW
FOR OFFICIAL USE
The appointment for energisation of service connection is fixed on at .(date) (time)
Please liaise with Meter Section of PowerGrid Ltd for the fixing of revenue meter before the energisation.
For clarification, please contact at Tel : 627770 .
▲ 98
■ Appendix 24
1 The service cable termination and meter compartment shall be located at the front-gate pillar/perimeter wall
such that it is accessible to SPSL’s and PowerGrid’s personnel without the need to enter the customer’s premises.
2 It shall be constructed of concrete, brick or high impact fibre glass and shall be completely weatherproof.
Provision shall be made to prevent any stagnation of water within the compartment.
3 The main dimensions of the compartment are shown in the layout drawing (see Appendix 25). The depth of the
compartment shall be between 250 mm and 300 mm.
4 A meter board of 20 mm thick and constructed of teak wood or any hardwood chemically treated against
termite attack shall be provided. Plywood board is not acceptable. A minimum space of 450 mm (W) x 800 mm
(H) shall be allowed for the termination of the service cable and the installation of service MCBs and meters.
Customer’s MCBs or connectors shall be mounted on a separate board in a separate compartment.
5 A hinged door with a clear glass viewing window shall be provided. The viewing window with a 200 mm (W) x
300 mm (H) x 6 mm (thickness) glass cover shall be positioned to be directly in front of the meter location. To
avoid high humidity and condensation within the compartment, sufficient ventilation shall be provided. The
access door shall not have less than 450 mm clear access opening.
6 The door shall be constructed of stainless steel, anodised aluminium or high impact type fibre glass reinforced
material. Where a metal door is provided, a means of earthing shall be provided.
7 One 100mm diameter UPVC lead-in pipe shall be provided for PowerGrid service cable. The pipe shall be laid
up to 100 mm from the floor slab of the electric meter compartment and shall undercross any drain in front of the
compartment.
8 There shall be adequate standing space in front of the compartment to facilitate meter reading, installation and
maintenance work. Where there exists a drain in front of the compartment, a suitable concrete platform or
hinged galvanised steel grating shall be provided.
9 The compartment shall be exclusively used for service cable and electricity meter. No water meter, gas meter or
other facilities shall be placed within the same compartment.
10 Please obtain clearance from URA’s Development Control Division if the meter-box structure exceeds their
stipulated dimensions.
TECHNICAL REQUIREMENTS FOR SERVICE CABLE ANDMETER COMPARTMENT FOR LANDED HOUSES
▲ 99
■ Appendix 24
STANDARD METER COMPARTMENTS AT GATE PILLAR
▲ 100
■ Appendix 25
STANDARD METER BOARD
▲ 101
■ Appendix 26
STANDARD SIZE FOR SINGLE-PHASE METER BOARD
1. Minimum space for single-phase meter position (enclosed within broken lines) :
(i) 230mm (W) x 280mm (H) for 25 sq mm cable and below.
(ii) 230mm (W) x 300mm (H) for 35 sq mm cable.
2. A customer’s earthing terminal shall be provided on the meter board for termination of the earthing lead and earth
continuity conductor.
3. Not more than one wire shall be connected to each terminal of the meter terminal block.
4. All wires on the meter board from MCB/Cut-Out to the meter and meter to main switch should preferably be run on the
surface.
5. The size of cables to be used for connection to meters should not exceed 35 sq mm.
6. The minimum length of wire “L” protruding from the meter board to the meter terminal shall be at least 200mm.
7. For meters grouped in a centralised meter room etc, an additional minimum spacing of 70mm is necessary between
each row of meters for ease of installation/change.
8. Some typical layouts are shown in figures A, B and C.
▲ 102
■ Appendix 27
STANDARD SIZE FOR THREE-PHASE METER BOARD
1. Minimum space for three-phase meter position 450mm (W) x 450mm (H) (enclosed within broken lines) :
2. A customer’s earthing shall be provided on the meter board for termination of the earthing lead and earth continuity
conductor.
3. Not more than one wire shall be connected to each terminal of the meter terminal block.
4. All wires from the meter board from MCB/Cut-Out to meter and meter to main switch should preferably be run on the
surface.
5. The size of cables to be used for connection to meters should not exceed 35 sq mm.
6. The minimum length of wire “L” protruding from the meter board to the meter terminal should be 200mm.
▲ 103
■ Appendix 28
CT METER PANEL FOR LOW VOLTAGE SUPPLY
▲ 104
■ Appendix 29
METHODS OF SEALING METER PANELS
▲ 105
■ Appendix 30
ENCLOSURE FOR LOW VOLTAGE METERING CURRENT TRANSFORMERS
▲ 106
■ Appendix 31
HV METERING KIOSK REQUIREMENTS(FOR 1 OR 2 FEEDERS)
HV Metering Kiosk Requirements (for 1 or 2 feeders)
The following are required :
a) Metering kiosk : 650mm by 1700mm by minimum height 2400mm of solid brick as shown.
b) Floor opening 50mm by 50mm as shown.
c) Staircase and 1000mm landing where required.
d) Steel or heavy duty aluminium door of 1200mm wide by 2100mm height to be fitted with one of the Grid approved master
series locksets as given in section 6.1.5.
e) One 13A switched socket outlet, one 40W lighting point and one fixed telephone line c/w telephone socket outlet.
f) Metal grill top cover if the back wall does not extend to the roof or ventilation louvers of size 600mm x 900mm if the back
wall extends to the roof.
g) If landing is above ground level, safety railings must be provided.
▲ 107
■ Appendix 32
HV METERING KIOSK REQUIREMENTS(FOR 3 OR 4 FEEDERS)
Side Elevation of Metering Kiosk for 3 or 4 feeder panel
The following are required :
a) Metering kiosk : 810mm by 2650mm by minimum height 2400mm of solid brick as shown.
b) Floor opening 100mm by 60mm as shown.
c) Staircase and 1000mm landing where required.
d) Steel or heavy duty aluminium door of 800mm wide by 2100mm height to be fitted with one of the Grid approved master
series locksets as given in section 6.1.5.
e) One 13A switched socket outlet, two 40W lighting points and one fixed telephone line c/w telephone socket outlet.
f) Metal grill top cover if the back wall does not extend to the roof or two ventilation louvers of size 600mm x 900mm if the
back wall extends to the roof.
g) If landing is above ground level, safety railings must be provided.
▲ 108
■ Appendix 32
HV METERING KIOSK REQUIREMENTS(FOR 3 OR 4 FEEDERS)
▲ 109
■ Appendix 33
HV METERING PANEL REQUIREMENTS(FOR 1 OR 2 FEEDERS)
▲ 110
■ Appendix 34
METERING VTSVoltage Ratio, Sequence And Phase Angle Tests Report
Customer : A/C No :
Project Address : APC No :
Voltage Ratio :
VTs No :
For Feeder No :
I, , EMA Licensed No. had carried out the above test and results are given below.
I hereby certify that the VTs are correctly connected up for tariff metering.
Stamp and Signature of LEW
Date :
Primary ( V) Secondary Phase Angle
Across Sequence Across Volt Lead LagFrequency
RY RY RE
YR
YB YE
BR BE
YB YB YE
BY
BR BE
RY RE
BR BR BE
RB
RY RE
YB YE
▲ 111
■ Appendix 35
1 Service Connection Charges for Low Voltage (LV) Connection
All LT consumers are required to pay a one-time upfront service connection charge. These charges which vary for
different load requirements are categorised depending on the provision of a substation.
For larger consumers with substations, their supply intake point is usually adjacent to the substation, which requires a
service cable of approximately 15m in most instances. Therefore, the standard connection charge is computed based
on a cost of service cable length of 15m. Consumers shall pay the additional cost for service cable exceeding 15m. In
addition, consumers shall also pay for those dedicated assets, such as switchgear and transformers, which are serving
them and do not benefit others.
For individual small consumers without substations, the cost of LT service cable for the same capacity may vary widely
depending on their locations with respect to the nearest LT mains. These consumers are not the sole beneficiaries of the
extension of the LT network. To achieve a greater degree of equity in terms of cost for these general consumers, a
standard cost approach is adopted based on similar requirements. The average global cost based on capacity is
determined from past statistics. As such, this category of consumers which comprises mainly the individual landed
residential owners, applying for the same applied load would pay the same standard connection charge regardless of
the location of their premises from the existing LT network.
Standard charges are only applicable to consumers who are connected to the shared network. The rates, which are
approved by EMA, are available in the Transmission Services Rate Schedule. Standard charges are not applicable to
consumers where the network created is unlikely to be shared by others. Some of these include supply to HDB premises,
temporary work sites, public installations and offshore island premises. These consumers would have to pay for the full
connection network cost, based on user-pay principle, as they are the main beneficiaries.
2 Service Connection Charges for HV and EHV Connection
Customers receiving HV and EHV connection shall pay the cost of the service connections to their intake equipment
including cables, associated equipment and facilities to effect the connection of customer’s equipment to PowerGrid’s
substation/network. The service connection shall cater for single contingency.
Customers requesting for additional level of contingency above single contingency are required to pay for the full cost of
such provision.
3 Dedicated Network/Substation
The customer shall pay the full cost for all associated equipment and facilities under a dedicated network/substation
scheme which the network capacity is intended to serve to its development exclusively.
BASIS FOR THE SERVICE CONNECTION CHARGE
▲ 112
■ Appendix 36
STANDARD SERVICE CONNECTION CABLES
The type of service connection cables for terminating into a customer’s intake point for the applied load connected at the LV
and 22kV level and the typical connection schemes are illustrated as follows:
Voltage Level Applied Load (kVA) Size of Cables Type of cables
LV Up to 15 35mm2 2Core Cu/XLPE/SWA/PVC
16 – 45 35mm2 4Core Cu/XLPE/SWA/PVC
46 – 75 35mm2 4Core Cu/XLPE/SWA/PVC
76 – 140 120mm2 4Core Al/XLPE/SWA/PVC
141 – 180 185mm2 4Core Al/XLPE/SWA/PVC
181 – 230 300mm2 4Core Al/XLPE/SWA/PVC
231 – 280 300mm2 4Core Cu/XLPE/SWA/PVC
281 – 460 2x300mm2 4Core Al/XLPE/SWA/PVC
461 – 560 2x300mm2 4Core Cu/XLPE/SWA/PVC
561 – 1000 7x500mm2 1Core Cu/XLPE/PVC
1001 – 1500* 7x1000mm2 1Core Cu/XLPE/PVC
1001 – 2000^ 2 sets of 7x500mm2 1Core Cu/XLPE/PVC
2001 – 3000^ 3 sets of 7x500mm2 1Core Cu/XLPE/PVC
22kV (HV) Up to 12750kW^ 2 sets of 300mm2 3Core Cu/XLPE/DSTA/PVC
12751 – 25500kW^ 2 sets of 2X300 mm2 3Core Cu/XLPE/DSTA/PVC
Pilot cables 1.5 mm2 5 pair Cu/PE/DSTA/PVC
For development whereby the service connection cables is to be supplied and installed by the customer, the LEW shall, in the
event of a non-standard cable installation, seek approval from PG prior to installation.
* applies to upgrading of applied load
^ There must be an electrical and mechanical interlocking bus coupler between each set of cables terminating into the
customer’s switchboard as shown below :
300mm2 3Core
2 x 300mm2 3Core 2 x 300mm2 3Core
Bus Coupler
2 x 300mm2 3Core
Bus Coupler
HV Customer’sSwitchboard25501 – 38250kWSubject toPowerGrid’sapproval
2 x 300mm2 3Core300mm2 3Core
Bus Coupler
HV Customer’sSwitchboard
Up to 12750kW
2 x 300mm2 3 Core
Bus Coupler
HV Customer’sSwitchboard
12751 – 25500kW
7 x 500mm2 1Core 7 x 500mm2 1Core
Bus Coupler
LV Customer’sSwitchboard1001 – 2000kVA
LV Customer’sSwitchboard2001 – 3000kVA
7 x 500mm2 1Core 7 x 500mm2 1Core
Bus Coupler
7 x 500mm2 1Core
Bus Coupler
▲ 113
■ Appendix 37
CERTIFICATE OF COMPLIANCE
Particulars of Electrical Installation
Name of Consumer :
Address of Installation :
Electrical Installation Licence No : MSS Account No :
Approved load & Supply Voltage : kW Volts
Generator(s) Installed : ■ Operated in parallel with PowerGrid’s network.
No. of generator : Rating : kVA
■ Standby generator
No. of generator : Rating : kVA
■ Not applicable
Certification by Licensed Electrical Worker
I certify that the above-mentioned Electrical Installation complies with the requirements of the Electricity (Electrical Installations)
Regulations 2002 and the relevant Singapore Standard Code of Practice. I further certify that the technical requirements as
stipulated by the person responsible for turning on the switchgear which controls the supply of electricity to the said electrical
installation have been complied with.
I hereby request for the energisation of the supply line to the said Electrical Installation on (date).
Name & Signature of LEW Licence No. Date
Copy to :
Market Support Services Licensee REF : E(EI)Reg5(2)
■ Appendix 38
STATEMENT OF TURN-ON OF ELECTRICITY ELECTRICITY SUPPLY TO ___________________________________________________ (Name of Applicant) AT________________________________________________________________________ (Address of Installation) ELECTRICAL INSTALLATION LICENCE NO* : ____________________________________ APPLICATION NUMBER: ______________________________________________________ I agree that the above-mentioned electrical installation is suitable for connection to the electrical system. I certify that the supply line to the installation has been energised on _____________________________at ______________________. (date) (time) ____________________________________ _____________ _________________ Name & Signature of PowerGrid’s officer NRIC No. Date
I acknowledge that the supply line has been energised on the date and time indicated above. ____________________________________ ________________ _________________ Name & Signature of LEW requesting for Licence No. Date energisation of supply line
I acknowledge that the supply line has been energised on the date and time indicated above and confirm that I will be responsible for the operation of this electrical installation hereafter. _______________________________________ _________________ _________________ Name & Signature of LEW responsible for the Licence No. Date operation of the electrical installation*
I acknowledge that the supply line has been energised on the date and time as indicated above.
__________________________________________ __________________ ___________________ Name & Signature of Applicant or his representative NRIC / Passport No. Date * Not Applicable for an electrical installation that is exempted from licensing
Original Copy – PowerGrid Ltd Pink Copy – LEW (Requesting) Yellow Copy – LEW (Operation) Green Copy – Applicant Blue Copy – MSSL White (last) Copy – File ► 114
REF: E(EI) REG R5(4)
▲ 115
■ Appendix 39
The customer applying for an exempt generation facility is required to obtain PowerGrid’s approval and shall
comply with the technical, safety & operational and commercial & legal requirements as follows:
A) Technical Requirements
1 real and reactive power/voltage output and voltage and frequency response times must be within agreed limits
2 not contribute to the voltage unbalance, voltage fluctuation and harmonic content specified for the transmission network
3 ensure that there is no interference to PowerGrid’s Equipment or any other directly or indirectly connected consumers.
4 ensure adequate partitioning of the exempt generation facility equipment from PowerGrid’s equipment
5 ensure that there is no fault level contribution exceeding 1.5kA to the distribution network
6 where required by PowerGrid, install harmonic filtering circuit at the incoming switchboard of the service connection in
compliance with the harmomics standard
B) Safety & Operational Requirements
1 provide an interlocking and inter-tripping facility for the service connection that meets PowerGrid’s requirement
2 fit exempt generation facility with reverse power relays to prevent export of power to the transmission system
3 not operate the exempt generation facility in islanding mode i.e.the embedded generator must isolate itself from the
distribution network when there is a fault/tripping on the latter or the customer’s installation (non-islanding protection)
4 provide a synchronizing facility at the incoming switchboard of its service connection and ensure that any output is
always synchronised with the distribution network
C) Commercial & Legal Requirement
The customer with an exempt generation facility shall :
1 pay standby use of system charges or any other charges approved by the EMA
2 give an undertaking to the PowerGrid in its Connection Agreement indemnify the PowerGrid Ltd :
i) for all losses and liabilities arising from any loss of sychronisation caused by any tripping or re-closing of any
breakers in the transmission system and the exempt generation facility connected in parallel to the transmission
system ; and
ii) to indemnify PowerGrid against losses to third parties caused by impedance, disruption degradation interference
or failure of transmission services to third parties caused by the system or works carried out on the transmission
system.
3 certify to PowerGrid that the exempt generation facility meet all conditions of the relevant legislation, regulation (including
installation, fire and safety, noise and environment);
4 conduct regular site tests and to notify the PowerGrid of the results
5 allow PowerGrid to conduct inspection of, disconnect and enforce conditions in respect of the service connection if the
exempt generation facility fails to meet any of the above requirements.
6 undertake in its Connection Agreement with PowerGrid to resolve, at its own expense all third party complaints concerning
the exempt generation facility(e.g.complaints due to noise, or aesthetic reasons); and
7 use the service connection at its own risk to operate in parallel with its exempt generation facility.
REQUIREMENTS FOR EXEMPT GENERATION FACILITYNOT EXCEEDING 1MW
▲ 116
■ Appendix 40
IEC Standards
IEC 60044-1 (1996-12) Ed. 1.0 Instrument transformers – Part 1 : Current transformers
IEC 60044-1-am1 (2000-07) Ed. 1.0 Amendment 1
IEC 60044-2 (2000-11) Consol. Ed. 1.1 (incl. am1) Instrument transformers – Part 2 : Inductive voltage
transformers
IEC 60044-6 (1992-03) Ed. 1.0 Instrument transformers – Part 6 : Requirements for protective current
transformers for transient performance
IEC 60060-1 (1989-11) Ed. 2.0 High-voltage test techniques – Part 1 : General definations and test
requirements
IEC 60060-2 (1994-11) Ed. 2.0 High-voltage test techniques – Part 2 : Measuring systems
IEC 60060-2-am1 (1996-03) Ed. 2.0 Amendment No.1 to IEC 60-2
IEC 60076-1 (2000-04) Consol. Ed. 2.1 (incl. am1) Power transformers – Part 1 : General
IEC 60076-2 (1993-04) Ed. 2.0 Power transformers – Part 2 : Temperature rise
IEC 60076-3 (2000-03) Ed. 2.0 Power transformers – Part 3 : Insulation levels, dielectric tests and external
clearances in air
IEC 60076-5 (2000-07) Ed. 2.0 Power transformers – Part 5 : Ability to withstand short circuit
IEC 60076-8 (1997-11) Ed. 1.0 Power transformers – Part 8 : Application guide
IEC 60076-10 (2001-05) Ed. 1.0 Power transformers - Part 10 : Determination of sound levels
IEC 60099-4 (2001-12) Consol. Ed. 1.2 (incl. am1 + am2) Surge arresters – Part 4 : Metal-oxide surge
arresters without gaps for a.c. systems
IEC 60137 (1995-12) Ed. 4.0 Insulating bushings for alternating voltages above 1000V
IEC 60141-1 (1993-09) Ed. 3.0 Tests on oil-filled and gas-pressure cables and their accessories – Part 1 : Oil-
filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories
for alternating voltages up to and including 500kV
IEC 60141-1-am1 (1995-02) Ed. 3.0 Amendment No.1
IEC 60141-1-am2 (1998-08) Ed. 3.0 Amendment No.2
IEC 60228 (1978-01) Ed. 2.0 Conductors of insulated cables
IEC 60228-am1 (1993-01) Ed. 2.0 Amendment No.1
IEC 60230 (1966-01) Ed. 1.0 Impulse tests on cables and their accessories
IEC 60255-3 (1989-06) Ed. 2.0 Electrical relays – Part 3 : Single input energising quantity measuring relays
with dependent or independent time
IEC 60255-5 (2000-12) Ed. 2.0 Electrical relays – Part 5 : Insulation coordination for measuring relays and
protection equipment – Requirements and tests
IEC 60255-6 (1988-12) Ed. 2.0 Electrical relays – Part 6 : Measuring relays and protection equipment
IEC 60255-8 (1990-10) Ed. 2.0 Electrical relays – Part 8 : Thermal electrical relays
IEC 60255-12 (1980-01) Ed. 1.0 Electrical relays – Part 12 : Directional relays and power relays with two input
energising quantities
IEC 60255-13 (1980-01) Ed. 1.0 Electrical relays – Part 13 : Biased (percentage) differential relays
IEC 60255-14 (1981-01) Ed. 1.0 Electrical relays – Part 14 : Endurance tests for electrical relay contacts –
Preferred values for contact loads
IEC 60255-16 (1982-01) Ed. 1.0 Electrical relays – Part 16 : Impedance measuring relays
IEC 60255-19 (1983-01) Ed. 1.0 Electrical relays – Part 19: Sectional specification: Electromechanical all-or-
nothing relays of assessed quality
IEC 60255-23 (1994-10) Ed. 1.0 Electrical relays – Part 23 : Contact performance
IEC 60255-24 (2001-05) Ed. 1.0 Electrical relays – Part 24 : Common format for transient data exchange
(COMTRADE) for power systems
IEC 60273 (1990-03) Ed. 3.0 Characteristics of indoor and outdoor post insulators for systems with nominal
voltages greater than 1000V
LIST OF STANDARDS
▲ 117
■ Appendix 40
IEC60186 Voltage Transformers
IEC 60287-1-1 (2001-11) Consol. Ed. 1.2 (incl. am1 + am2) Electric cables – Calculation of the current rating –
Part 1-1 : Current rating equations (100% load factor) and calculation of losses – General
IEC 60287-1-2 (1993-12) Ed. 1.0 Electric cables - Calculation of the current rating – Part 1 : Current rating
equations (100% load factor) and calculations of losses – Section 2: Sheath eddy current loss
factors for two circuits in flat formation
IEC 60287-2-1 (2001-11) Consol. Ed. 1.0 (incl. am1) Electric cables – Calculation of the current rating – Part 2-1 :
Thermal resistance – Calculation of the thermal resistance
IEC 60287-2-2 (1995-05) Ed. 1.0 Electric cables - Calculation of the current rating – Part 2: Thermal resistance –
Section 2: A method for calculating reduction factors for groups of cables in free air, protected
from solar radiation
IEC 60287-3-1 (1999-05) Consol. Ed. 1.1 (incl. am1) Electric cables – Calculation of the current rating – Part 3-1 :
Sections on operating conditions – Reference operating conditions and selection of cable type
IEC 60287-3-2 (1995-07) Ed. 1.0 Electric cables - Calculation of the current rating – Part 3 : Sections on
operating conditions – Section 2 : Economic optimization of power cable size
IEC 60287-3-2-am1 (1996-10) Ed. 1.0 Amendment No.1 to IEC 287-3-2
IEC 60289 (1988-05) Ed. 2.0 Reactors
IEC 60298 (1990-12) Ed. 3.0 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1kV
and up to and including 52kV
IEC 60332-1 (1993-04) Ed. 3.0 Tests on electric cables under fire conditions – Part 1 : Test on a single vertical
insulated wire or cable
IEC 60354 (1991-10) Ed. 2.0 Loading guide for oil-immersed power transformers
IEC 60376 (1971-01) Ed. 1.0 Specification and acceptance of new sulphur hexafluoride
IEC 60502-1 (1998-11) Consol. Ed. 1.1 (incl. am1) Power cables with extruded insulation and their
accessories for rated voltages from 1kV(Um = 1,2kV) up to 30kV (Um = 36kV) - Part 1 : Cables
for rated voltages of 1kV (Um = 1,2kV) and 3kV (Um = 3,6kV)
IEC 60517 (1990-10) Ed. 3.0 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5kV and above
IEC 60517-am1 (1994-11) Ed. 3.0 Amendment No.1
IEC 60521 (1988-03) Ed. 2.0 Class 0.5, 1 and 2 alternating-current watthour meters
IEC 60529 (2001-02) Consol. Ed. 2.1 (incl. am1) Degrees of protection provided by enclosures (IP Code)
IEC 60651 (2001-10) Consol. Ed. 1.2 (incl. am1 + am2) Sound level meters
IEC 60660 (1999-10) Ed. 2.0 Insulators – Tests on indoor post insulators of organic material for systems with
nominal voltages greater than 1000V up to but not including 300kV
IEC 60687 (1992-06) Ed. 2.0 Alternating current static watt-hour meters for active energy (classes 0,2 S and
0,5 S)
IEC 60694 (2001-05) Consol. Ed. 2.2 (incl. am1 and am2) Common specifications for high-voltage
switchgear and controlgear standards
IEC 60722 (1982-01) Ed. 1.0 Guide to the lightning impulse and switching impulse testing of power
transformers and reactors
IEC 60811-1-1 (2001-07) Consol. Ed. 2.1 (incl. am1) Common test methods for insulating and sheathing
materials of electric cables and optical cables - Part 1–1 : Methods for general application –
Measurement of thickness and overall dimensions - Tests for determining the mechanical
properties
IEC 60840 (1999-02) Ed. 2.0 Power cables with extruded insulation and their accessories for rated voltages
above 30kV (Um = 36kV) up to 150kV (Um = 170kV) - Test methods and requirements
IEC Standards continued
▲ 118
■ Appendix 40
IEC 60859 (1999-07) Ed. 2.0 Cable connections for gas-insulated metal-enclosed switchgear for rated
voltages of 72.5kV and above – Fluid-filled and extruded insulation cables - Fluid-filled and dry
type cable-terminations
IEC 60885-1 (1987-03) Ed. 1.0 Electrical test methods for electric cables. Part 1: Electrical tests for cables,
cords and wires for voltages up to and including 450-750V
IEC 60885-2 (1987-03) Ed. 1.0 Electrical test methods for electric cables. Part 2 : Partial discharge tests
IEC 60885-3 (1988-07) Ed. 1.0 Electrical test methods for electric cables. Part 3 : Tests methods for partial
discharge measurements on lengths of extruded power cables
IEC 60947-1 (2001-12) Consol. Ed. 3.2 (incl. am1 + am2) Low-voltage switchgear and controlgear – Part 1 :
General rules
IEC 60947-7-1 (1999-08) Consol. Ed. 1.1 (incl. am1) Low-voltage switchgear and controlgear – Part 7 : Anciliary
equipment – Section 1 : Terminal blocks for copper conductors
IEC 61000-4-2 (2001-04) Consol. Ed. 1.2 (incl. am1 + am2) Electromagnetic compatibility (EMC) – Part 4-2 :
Testing and measurement techniques – Electrostatic discharge immunity test
IEC 61036 (2000-09) Consol. Ed. 2.1 (incl. am1) Alternating current static watt-hour meters for active energy
(classes 1 and 2)
IEC 62098 (2000-11) Ed. 1.0 Evaluation methods for microprocessor based instruments
IEC 62271-100 (2001-05) Ed. 1.0 High-voltage switchgear and controlgear – Part 100 : High-voltage alternating-
current circuit-breakers
IEC 62271-102 (2001-12) Ed. 1.0 High-voltage switchgear and controlgear – Part 102 : High-voltage alternating-
current disconnectors and earthing switches
IEC 60068 (1988-06) Environmental testing. Part 1 : General and guidance
IEC 60068-1-am1 (1992-04) Amendment No. 1
IEC 60068-2-3 (1969-01) Environmental testing - Part 2 : Tests. Tests Ca: Damp heat, steady state.
IEC 60068-2-11 (1981-01) Environmental testing - Part 2 : Tests. Tests Ka: Salt Mist.
IEC 60068-2-11 (1999-12) Corrigendum 1.
IEC 60068-2-30 (1980-01) Environmental testing - Part 2 : Tests. Tests Db and guidance: Damp heat, cyclic (12 +
12-hour cycle)
IEC 60068-2-30-am1 (1985-08) Amendment No. 1
IEC 60068-2-67 (1995-12) Environmental testing – Part 2 : Tests – Test Cy: Damp heat, steady state, accelerated
test primarily intended for components.
IEC 60068-3-4 (2001-08) Environmental testing – Part 3-4 : Supporting documentation and guidance – Damp
heat tests
IEC 60068-4 (1987-09) Environmental testing. Part 4 : Information for specification writers – Test Summaries
IEC 60068-4-am1 (1992-02) Amendment No. 1
IEC 60068-4-am2 (1994-03) Amendment No. 2
IEC 61000-1-1 (1992-05) Electromagnetic compatibility (EMC) – Part 1 : General – Section 1: Application and
interpretation of fundamental definitions and terms.
IEC 61000-1-2 (2001-06) Electromagnetic compatibility (EMC) – Part 1-2 : General – Methodology for the
achievement of the functional safety of electrical and electronic equipment with regard to
electromagnetic phenomena.
IEC 62067 (2001-10) Power cables with extruded insulation and their accessories for rated voltages above
150kV (Um = 170kV) up to 500kV (Um = 550kV) – Test methods and requirements
IEC Standards continued
▲ 119
■ Appendix 40
British Standards
BS EN 60051-1 (1999) Direct acting indicating analogue electrical measuring instruments and their accessories.
[IEC 60051-1(1997)] Definitions and general requirements common for all parts.
BS 89-2 (1990) Direct acting indicating analogue electrical measuring instruments and their accessories.
[IEC 60051-2 (1984)] Specification for special requirements for ammeters and voltmeters
BS 89-3 (1990) Direct acting indicating analogue electrical measuring instruments and their accessories.
[IEC 60051-3 (1984)] Specification for special requirements for wattmeters and varmeters.
BS 89-4 (1990) Direct acting indicating analogue electrical measuring instruments and their accessories.
[IEC 60051-4 (1984)] Specification for special requirements for frequency meters.
BS 89-5 (1990) Direct acting indicating analogue electrical measuring instruments and their accessories.
[IEC 60051-5 (1985)] Specification for special requirements for phase meters, power factor meters and
synchroscopes.
BS 89-9 (1990) Direct acting indicating analogue electrical measuring instruments and their accessories.
[IEC 60051-9 (1988)] Recommended test methods.
BS 148 (1998) Specification for unused and reclaimed mineral insulating oils for transformers and switchgear.
BS 159 (1992) Specification for high-voltage busbars and busbar connections.
BS EN 60076-1 (1997) Power transformers. General
BS 171-5 (1978) Power transformers. Specification for ability to withstand short circuit.
[IEC 60076-5 (1976)]
BS EN 60060-2 (1995) High-voltage testing techniques. Measuring systems
BS 3938 (1973) Specification for current transformers
BS 3941 (1975) Specification for voltage transformers
BS EN 60214 (1998) On-load tap changers
BS 5207(1975) Specification for sulphur hexafluoride for electrical equipment
BS 5209 (1975) Code of practice for the testing of sulphur hexafluoride taken from electrical equipment
BS 5311(1996) High-voltage alternating-current circuit-breakers
BS EN 60947-4-1(2001) Specification for low-voltage switchgear and controlgear. Contactors and motor-starters.
Electromechanical contactors and motor-starters
BS 5685-1(1979) Electricity meters. Specification for class 0.5, 1 and 2 single-phase and polyphase, single rate
and multi-rate watt-hour meters.
BS 5685-2 (1986) Electricity meters. Specification for single-phase coin operated prepayment flat rate and two-
part tariff watt-hour meters of class 2 and fixed charge collectors of class 2.
BS 5685-3 (1986) Electricity meters. Specification for meters having class 1 electro-mechanical maximum demand
indicators.
BS 5685-4 (1986) Electricity meters. Specification for class 3 var-hour meters.
BS 5685-5 (1987) Electricity meters. Specification for input and output switching or logic arrangements for multi-
rate registers for electricity meters.
BS 5685-8 (1991) Electricity meters. Specification for impulse operated multiple registers for use with induction
electricity meters.
BS 5730 (2001) Monitoring and maintenance guide for mineral insulating oils in electrical equipment.
BS 5992-1(1980) Electrical relays. Specification for contact performance of electrical relays
[IEC 60255-0-20 (1974)]
BS 6231(1998) Specification for PVC-insulated cables for switchgear and controlgear wiring.
BS EN 60044-2 (1999) Instrument transformers. Inductive voltage transformers
[IEC 60044-2 (1997)]
▲ 120
Singapore Standards
SS 318 (1987) Current transformers for measurement and protection
SS 404 (1997) Power transformers Part 1: General
SS 404 (1997) Power transformers Part 2 : Temperature rise
SS 404 (2001) Power transformers Part 3: Insulation levels and dielectric tests and external clearances in air
SS 404 (2001) Power transformers Part 5 : Ability to withstand short circuit
SS 404 (2000) Power transformers Part 8 : Application guide SS 443 (1998) Part 1 : Power cables with extruded
insulation and their accessories for rated voltages from 1kV (Um = 1.2kV) up to 30kV (Um =
36kV) – Cables for rated voltages of 1kV (Um = 1.2kV) and 3kV (Um = 3.6kV) SS ISO 9000 (2000)
Quality management systems – Fundamentals and vocabulary
SS ISO 9001 (2000) Quality management systems – Requirements
SS ISO 9004 (2000) Quality management systems – Guidelines for performance improvements
CP 5 (1998) Code of practice for electrical installations
CP 10 (1993) Code of practice for the installation and servicing of electrical fire alarm systems
CP 16 (1991) Code of practice for earthing
CP 19 (2000) Code of practice for the installation and maintenance of emergency lighting and power supply
systems in buildings
CP 31 (1996) Code of practice for installation, operation, maintenance, performance and constructional
requirements of mains failure standby generating systems
CP 33 (1996) Code of practice for lightning protection
Other Standards
IEEE C37.09 Test procedure for A.C high-voltage circuit breakers rated on a symmetrical current basis
ANSI C37.09 (1999)
IEEE 32 (1972) Neutral grounding devices, req term and test procedures
ISO 7-2 (2000) Pipe threads where pressure-tight joints are made on the threads – Part 2: Verification by means
of limit gauges
AEIC CS2 (1997) Impregnated paper and laminated paper polypropylyne insulated cable high-pressure-pipe type
AEIC CS4 (1993) Impregnated-paper-insulated-low and medium pressure self-contained liquid filled cable
ASTM B187 (2000) Standard specification for copper bar, bus-bar, rod and shapes
ASTM B3 (2001) Standard specification for soft or annealed copper wire
■ Appendix 40