Pages From AMI_Final Report_Vol II_Technical Specifications_vF(2)

8/10/2019 Pages From AMI_Final Report_Vol II_Technical Specifications_vF(2)

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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II :

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8*'52This specification covers the functional and technical requirements for single-phasesmart meters within the scope of the A1 customer category.

These meters shall be installed at the clients premises according with the locallegislation and using meter boxes if it would be required.

The technical requirements for the smart meters shall be in conformity withinternational standards IEC and local regulations, moreover comply with quality andperformance requirements set by EVN and PCs.

The technical requirements herein should be used for a tendering process and anymeter manufacturer should be able to provide the goods without any problem. Inthis line, the meters offered shall be completed in all respects as necessary for theireffective and trouble-free operation when connected to the system.

The smart meters shall be provided with related documentation, like, but not

limited to, manufacturer information, product data sheet, material and testingcertificates (where applicable), operational philosophy/manual (where applicable),and maintenance instructions.

-,-

W0'44/&HAMI Advanced Metering Infrastructure

AES Advanced Encryption Standard

AMR Automated Meter Reading

CEN Comit Europen de Normalisation

CENELEC Comit Europen de Normalisation Electrotechnique

EMC Electromagnetic Compatibility

EVN VietNam Electricity

EVNPC EVN Power Corporation

IEC International Electrotechnical Commission

IEEE Institute for Electrical and Electronic Engineering

IP Internet Protocol or Index for Protection

ISO International Organization for Standardization

LV Low Voltage

MDMSMeter Data Management System. When a HES is necessary for thecommunications, then MDMS shall refer to both software plus theinterface between them.

MEP Multipurpose Expansion Port

MOIT Ministry of Industry and Trade

MOST Ministry of Science and Technology

PLC Power Line Carrier

RF Radio Frequency

SMT Surface Mount Technology


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II A

Wi-Fi Wireless Fidelity

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7550+*/N02 8%/$(/&(4The international community has already defined most of the standards required for

accuracy measurement, tariff, security and load control features, as well as dataexchange for meter reading. However communications standards are still indefining process in most of the countries and each country has selected a differenttechnology. In addition the local standards shall be taken into consideration andshould be included once they are defined. The applicable IEC standards for single-phase meters of this category are:

IEC 62052-11 General requirements: metering equipment.

IEC 62052-21 tariff and load control equipment.

IEC 62052-31 - safety requirements.

IEC 62053-21 - Particular requirements: static meters for active energy

(classes 1 and 2). IEC 62053-61 power consumption and voltage requirements.

IEC 62058-3 Acceptance inspection Part 31: particular requirements forstatic meters for active energy (classes 0.2s, 0.5s, 1 and 2).

IEC 62056 Electricity metering Data exchange for meter reading, tariff andload control.

IEC 60529 (2001) - Degree of protection provided by enclosures (IP Code).

IEC 61000-4-30 Electromagnetic compatibility (EMC) Testing andmeasurement techniques Power quality measurement methods.

EN 50470-1 (2009) Electricity metering equipment (a.c.). Generalrequirements, tests and test conditions. Metering equipment (class indexesA, B and C).

EN 50470-3 (2009) Electricity metering equipment (a.c.). Particularrequirements. Static meters for active energy (class indexes A, B and C).

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.)$*%+'$/0 &2V)+&292$%4Smart meters for category A1 are defined for residential customers with lowconsumptions that use simple tariffs scheme (energy registering only). The metersinstalled in these customer premises are single-phase.

Requirements for single-phase smart meters shall comply with the followingfunctionalities:

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The meter shall measure and register active energy in one direction (1-quadrant).

The automatic or on-demand readings should be performed in daily andmonthly basis.


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Tech. Spec. of AMI for Vietnam Final Report Volume II C

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The reference voltage value is 220V. Meter should record under voltage and overvoltage and also power cut. Events related to under voltage and overvoltage should be recorded in the

meter. Threshold of under voltage is from 220 to 165 and for overvoltage is

from 240 to 288. These events won't be recorded unless they continue for equal or much

more time than the time set for under voltage and overvoltage threshold.This time may adjust between 1 to 60 seconds (by 1 sec. steps).

For each under voltage, min. voltage during one period should be detectedand recorded.

For each overvoltage, max. Voltage during one period should be detectedand recorded.

Parameters related to threshold and duration of under voltage andovervoltage should be adjustable locally and remotely.

Events related to power cut should be recorded in the meter as flowing:o For long duration power cuts (more than 3 min), duration time and

date should be recorded.o For short duration power cuts, number of power cuts should be

recorded.

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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II F

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The meter shall allow local and remote update of firmware. Software for local operation, diagnostics and reporting on the operation of

the meters, enabling full configuration, provisioning, diagnostics and readoutof metering data and events from the meter.

The software shall provide three levels of access:

o operator mode: readout of metering data (current and historic data,register of events, load profile) and parameters from the meter only;

o service mode: readout and provisioning of the meter using readyprovisioning files, clock setting;

o administration mode: full readout and provisioning of the meter. New software versions shall be able operate equipment previously

purchased by the ordering entity from the supplier. Configuration files from an older software version shall be operable in newer

versions. The software for local operation of the meters shall enable export of

metering data, events and configurations from the meters to text files (TXT,CSV, XML) with a documented structure.

Upgrading of firmware should not stop and affect meter's metrology.

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Only one season and one tariff shall be in operation during any time.

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Tech. Spec. of AMI for Vietnam Final Report Volume II I

Demand limitation for emergency situations:o If the Demand limitation in emergency situation is activated it has

the priority to Demand limitation in normal situations.o Demand limitation for emergency situation is activated when average

transmitted Current from the meter exceeded the emergency

demand limitation (SA) for more than K sec.! S is adjustable from 2 A to 60A, by 2A steps.! K is adjustable from 30 sec. to 120 sec. by 1 sec. steps.

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The meter shall be connected since its installed in the customer premise.

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The smart meters shall be capable of using the communication technology definedin the datasheet. The options shall be either PLC or RF Communications. Thereforethe smart meters shall be equipped with a fixed communication module1deviceaccordingly. Communications shall be in any case compliant with the provisionsincluded in the Technical Specifications for Communications attached to thisdocument.

In either case, the meters could be designed as:

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The smart meters shall be equipped with a fixed built-in PLC communicationmodem. This communication technology shall provide technical performanceand quality characteristics to transmit and receive data between the smart

meters and a data concentrator locally positioned at the LV distributiontransformer location.

The data readout protocol in the PLC communication and through the metercommunication interfaces shall be compliant with the communicationtechnologies described in the technical specifications for communicationsattached to this document.

The PLC communication units shall be able to establish a self-configured,self-healing PLC network supporting:

o star network topology.o tree network topology.

The appliance of PLC technology shall provide data communication betweensmart meters (data collectors/building gateways) and hub/data

concentrators at the LV distribution transformer locations. The applied PLC technology shall provide data transmission rates up to 2400

bps. The communication module shall ensure effective delivery of messages and

alerts from the meters to the central system in the immediate mode, takinginto consideration physical possibilities connected with the appliedcommunication technology.

As a minimum, the meter shall have the following communication interfaces:o for local communication and programming the meter: optical

interface, in accordance with IEC 62056-21.

1This module may be detachable (by means of a RS-485 connector) if the Client request soin the Specifications Data sheet.


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Tech. Spec. of AMI for Vietnam Final Report Volume II E

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The radio frequency communication technology shall comply with thedescription of features and international standards in technical specificationsfor communications attached to this document.

The smart meters shall be equipped with a RF network communicationmodule. The RF network communication module in order to transmit and

receive data between the smart meters and a data concentrator in the areashall provide secure communication.

The RF network communication modules shall be able to establish a self-configured, self-healing wireless network supporting:

o star network topology.o tree network topology.o meshed network topology.

The appliance of RF network technology shall provide data communicationbetween:

o smart meters (data collectors/building gateways) and dataconcentrators at the LV distribution transformer locations.

o smart meters (data collectors/building gateways) and meter

repeaters or hub/data repeaters.

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Tech. Spec. of AMI for Vietnam Final Report Volume II L

The meter shall enable remote synchronization of time:o after installation upon initiation of connection with the

concentrator,o upon request,o on a regular basis period predefined by PCs (from one day to one

month).

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:2%2& (24+G$ The meter shall have state-of-the-art surface mount technology (SMT)

components. The cover shall be made of plastic and fitted in such a way that the internal

parts of the meter are accessible only after breaking the meter cover seals. The plastic for the terminal block, meter cover, and base shall be flame-

retardant and UV-stabilized, passing a glow wire test at 960C. The terminal block may be integral with the meter base. Components with critical content materials (mercury, cadmium, cobalt etc.)

should be avoided. A simply separation into different fractions for disposal

(no metal parts molded in plastics) in a recycling process at the end of themeter lifetime should be possible.

The meters shall have conducting terminals suitable for termination ofcurrent and potential leads. The terminals shall have a minimum innerdiameter of 8 mm.

The manner of fixing the conductors to the terminals shall ensure adequateand durable contact such that there is no risk of them coming loose orheating up unduly. Two nickel-plated brass screws shall be provided in eachcurrent terminal for effectively clamping the external leads with thimbles.Each clamping screw shall engage at least 3 threads in the terminals. Theends of the screws shall be such as not to pierce the conductor. Pressurestrips of copper that is nickel or tin-plated shall be fitted in the terminal

holes to reduce the chances of the leads coming loose or heating up in theterminal block.

The terminal cover shall be sealed independently of the meter cover. Theterminal cover shall enclose the actual terminals, the conductor fixingscrews, the external conductors, and their insulation, whereby no part of themeter or cables shall be accessible from the front of the meter.

The fixing screws used on the terminal cover for fixing and sealing shall beretained in the terminal cover.

The terminal block, terminal cover, and meter case shall ensure safetyagainst the propagation of fire or thermal overload of live parts coming intocontact with them.

The meter shall be capable of being sealed in accordance with regulations in

Vietnam.

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:2%&'0'GHEach smart meter shall measure the following values;

Active Energy: according to IEC 62053-21 the meter shall be active energy(kWh) metering Class 1 or class B (EN 50470-3:2009).

Active Power: kW.

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R02*%&+*/0 Number of Phases: 1+N


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Tech. Spec. of AMI for Vietnam Final Report Volume II #J

Nominal Voltage: standard reference voltage value for direct connection is220V. Meter input voltage range for normal operation should be from 70%to 120% of nominal voltage.

Maximum Voltage: 288V (max. 6 hours) Nominal (Maximum) Current: 5(80)A Single Rate Calibration interval: !4 years Nominal Frequency (fn): according to the Distribution Code of Vietnam, the

nominal frequency of national power system is 50 Hz. Extended operating frequency range: 2%. Voltage circuit with power supply connected: "2W/5VA. Current circuit at basic current Ib: "4VA. Short time over current: !30I max according to IEC for 0.01 sec. Starting current: 0.5% In (IEC 62052-11).

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R$Y+&'$92$%/0 Temperature range according to the IEC 6205-11 for the smart meters

should be:

o Limit range of operation for inside of premises: -25C to +55Co Limit range for operation for outside of premises: -25C to +70C

Operation and storage and transport of the meter at the extremes of thistemperature range should only be for a maximum of 6h.

Relative humidity: according to the IEC 6205-11 the meter shall be designedto withstand the following climatic conditions:

o Annual mean: 85%o 60 days spread in a natural manner over a year: 95%o Occasionally on other days: 75%

Protection class: As a minimum the casing shall ensure the degree ofprotection of IP53 according to UNE/EN 60529.

Terminal block: 960C 15C. Terminal cover and meter case: 650C 10C. Duration of application: 30s 1s.

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:2*3/$+*/0 Display: The meter shall have an LCD display, comprising 8 segments and

including 2 decimals. The meter display shall be LCD with good contrast andwide viewing angle for easy meter readout. The display image area shall beeasily readable from a distance of approximately 1 meter. It should have awide operating temperature range (industrial grade) and a lifetime of atleast 15 years. The display shall have 8 digits for the cumulative energy,with digit height of 7.5-10 mm. The cumulative readout will be of whole kWh

only, including leading zeros, and shall be the default display at meter powerup. Every numerical element of an electronic display shall be able to show allthe numbers from zero to nine.

General requirements:o Data displayed shall be programmable;o Auto scrolling shall be used for changing displayed data;o Displayed data time duration shall be programmable;o Displayed data programmable parameters should be in destined

configuration file;o Total kWh tariff;o Peak Demand KW;o Current tariff number;o Quadrant indication;


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Tech. Spec. of AMI for Vietnam Final Report Volume II #/

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Record short power cut N All

Internal memory

Register in non-volatilememory

kW, kWh, V, I Required

Register in non-volatilememory

Events/Alerts Required

Time storage Days 60

CommunicationsMeter with Detachable RS-485Communications Module

Required/NotRequired

Meter with integrated PLCModule


Meter with integrated RadioFrequency Module


Communication Interfaces

for Local ReadingOptical interface acc. To IEC62056-21

bps 1200-9600

RMR interface Serial interfaceacc. to IEC

62056-21 to module

bps 1200-9600


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Tech. Spec. of AMI for Vietnam Final Report Volume II #F

Functionalities

SpecificationsUnits Data Confirmed Value

For Meters with Modularcommunication:Modular communicationinterface allowing the

exchange of communicationunits without the breaking ofthe calibration seal.

Required

Multi-channel communicationSimultaneous andindependent communicationvia optical and electricalinterfaces.

Required

Interoperability

Meter to Concentrator Required

Security Features

3 Access levels Required

Meters and MDMS Encrypted Required

Firmware Update

Local and Remote update Required

Load Profiling

Number of channels ofremotely configurable loadprofile data that can becaptured at programmableintervals.

Number 1

Programmable intervals minutes 1 to 60

Load profile storage capacity values !4 months

with samplesevery 30 min

Automatic change of seasonable timetable

Seasons Number 2

Anti-tampering operation

The meter shall measureenergy with a maximum of3% added error in case ofmissing neutral connection

Required

Inverted wiring of the metershall not influence the energyregistration of the meter

Required

Removal of the cable terminalcover detection Required

Meter housing opening RequiredMeter dismantle RequiredRemoval of meter frominstallation site

Required

DC magnetic field detection RequiredAlarming functionality

Power switch On/Off Required

Meter parameterization Required

Date and time sets Required

Terminal cover removal Required

Meter enclosure tampering Required


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Tech. Spec. of AMI for Vietnam Final Report Volume II #I

Functionalities


DC Field detection Required

Wiring inversion Required

Current without voltage Required

internal errors Required

communication problems Required

configuration problems Required

power breaks Required

phase errors Required

over voltage Required

under voltage Required

Internal Diagnosis

Auto self-check and diagnosticof the meter

Required

Demand Side ManagementDemand limitation Required

Plug and play

Operative since installation Required

Technical Specifications Units DataConfirmed Value

Metrology

Active energy IEC 62053-21 Class Class 1

Active Power kW Required

Active Energy kWh Required

Current

Minimum Base Current lbaccording to IEC 62052-11

A 5

Maximum current Imaxaccording to IEC

A 60

Starting current according toIEC

%In 0.50%

Short time overcurrent A !30 Imax

Voltage

Standard reference VoltageUn (IEC 60038)

V 220

Voltage range %Un 70%-120%(154V-264V)

Calibration interval Years !4

Voltage failure bridging time s 0.5

Voltage restoration functionstandby after

s "5

Frequency

Nominal frequency Hz 50

Extended operating frequencyrange

% 2

Environmental

Temperature range (limit

operation range) for inside ofpremises installed meters

!C -25C to +55C


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Tech. Spec. of AMI for Vietnam Final Report Volume II #E

Functionalities


Temperature range (limitoperation range) for installedmeters outside of premises

!C -25C to +70C

Relative humidity as per IEC

62052-11

% 5-95

Protection class according toIEC 60529

IP53

Terminal block !C 960C 15C

Terminal cover and metercase

650C 10C

Duration of application s 30s 1s

Mechanical

Designed wire connections 1-phase 1-phase 2 wire

Lifetime years !15 years

Meter serial number Required

DisplayDimensions: Digitize in valueField "8mm

Required

Display of values:Programmable displaysequence

Required

LCD (Dimensions) 8 segments, 8digits

Required

Material Liquid crystaldisplay

Required

Lifetime years !15 yearsClock and calendar

Accuracy (IEC 62052/54-

21)

Delay +/- 0.5 sec/day

Persian calendar including Leap year, Daylight saving time,summer andwinter clock andtariffs for normaldays, weekend,and publicholidays.

Required

Sealed terminal cover Required

Meter Cover seals At least onevisible seal has tobe provided insuch a way thatthe internal partsof the meter areaccessible onlyafter breakingthe seal(s).

Required

Meter Terminal seals At least onevisible seal haveto be providedand no access tothe terminalsshall be possiblewithout breakingthe seal(s) of the

terminalcover(s).

Required


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II #L

Functionalities


Power Consumption

In the voltage circuit withpower supply connected

WVA

"2"5

Current circuit at basic currentlb VA"

4

Insulation Strength

Insulation Strength at 50Hzfor 1 min

kV 4

Pulse voltage 1.2/50s acc.Current and voltage circuits

kV 8

Protection class acc. Class 2

Dimensions and layout

Height mm max 279

Width mm max 170

Depth mm max 81

Net weight kg


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Tech. Spec. of AMI for Vietnam Final Report Volume II /J

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8*'52This specification covers the functional and technical requirements for single andthree phases smart meters within the scope of the A2 customer category. This

category is defined as meters in residential customers with higher consumption thatmay require more complex tariffs and parameters registering.

These meters shall be installed at the clients premises according with the locallegislation and using meter boxes if it would be required.



The smart meters shall be provided with related documentation, like, but notlimited to, manufacturer information, product data sheet, material and testingcertificates (where applicable), operational philosophy/manual (where applicable),and maintenance instructions.

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LV Low Voltage

MDMSMeter Data Management System. When a HES is necessary for thecommunications, then MDMS shall refer to both software plus theinterface between them.





RF Radio Frequency


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II /#


TOU Time Of Usage


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7550+*/N02 8%/$(/&(4The international community has already defined most of the standards required foraccuracy measurement, tariff, security and load control features, as well as dataexchange for meter reading. However communications standards are still indefining process in most of the countries and each country has selected a differenttechnology. In addition the local standards shall be taken into consideration andshould be included once they are defined. The applicable IEC standards for single-phase meters of this category are:

IEC 62052-11 General requirements: metering equipment.

IEC 62052-21 Part 21: tariff and load control equipment.

IEC 62052-31 - Part 31: safety requirements.

IEC 62053-21 - Particular requirements: static meters for active energy(classes 1 and 2).

IEC 62053-23 - Particular requirements: static meters for reactive energy(classes 2 and 3).

IEC 62053-61 Part 61: power consumption and voltage requirements.







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.)$*%+'$/0 &2V)+&292$%4Smart meters for category A2 are defined as single-phase and three-phase.Therefore these functional requirements are collecting functionalities of both smartmeters but with each own explanation in the situations that would be required.Requirements for single and three phases smart meters shall comply with thefollowing functionalities:

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The meter shall measure and register active and reactive energy in twodirections (4-quadrants).


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Tech. Spec. of AMI for Vietnam Final Report Volume II //

The automatic or on-demand readings should be performed on daily basis.

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Reference Voltage Un is 220/380V. Meter should record under voltage and overvoltage and also power cut. Events related to under voltage and overvoltage should be recorded in the

meter. Threshold of under voltage is from 240 to 165 and for overvoltage isfrom 240 to 288. And for the three-phase under voltage is from 100 to 57.7and for overvoltage is from 240 to 415.

These events won't be recorded unless they continue for equal or muchmore time than the time set for under voltage and overvoltage threshold.This time may adjust between 1 to 60 seconds (by 1 sec. steps).


For each overvoltage, max. voltage during one period should be detectedand recorded.

Parameters related to threshold and duration of under voltage and

overvoltage should be adjustable locally and remotely. Events related to power cut should be recorded in the meter as flowing:

o For long duration power cuts (more than 3 min), duration time anddate should be recorded.

o For short duration power cuts, number of power cuts should berecorded.

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Tech. Spec. of AMI for Vietnam Final Report Volume II /:

o Meter Reading;o Meter Configuration;o Firmware upgrade.

Each meter password should have inaccessible and protected codes. The meter must have integrated security of transmitted data against

unauthorized access, for example, authentication, unauthorized reading,

unauthorized command generating, and the malicious delivery of false data,as well as against spying out the line of communication.

The exchange of data between the meters and the metering datamanagement system shall be encrypted as per the provisions in the securitysection.

The meter shall be compatible with the provisions established in the cyber-security section, which also includes the security features of thecommunications and the MDMS.

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The meter shall allow local and remote update of firmware.

Software for local operation, diagnostics and reporting on the operation ofthe meters, enabling full configuration, provisioning, diagnostics and readoutof metering data and events from the meter.

New software versions shall be able operate equipment previouslypurchased by the ordering entity from the supplier.

Configuration files from an older software version shall be operable in newerversions.

The software for local operation of the meters shall enable export ofmetering data, events and configurations from the meters to text files (TXT,CSV, XML) with a documented structure.


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At least 4 seasons shall be definable. A season shall be defined by a month and a day. Season starting at 00:00 hours of the defined day in every year. Shall be superseded when the next season becomes effective. Holidays and weekdays shall be definable during a season. Ending of a maximum demand time interval shall be performed before the

end of a season. If necessary, self-reading shall be performed before a newseason becomes effective.

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Tech. Spec. of AMI for Vietnam Final Report Volume II /A

Demand Management system for normal and emergency situations shouldbe remotely activated or deactivated.

It should be possible to record demand deviations and the demand deviationvalue should be recorded in meter with its date and time.

o Meter should record at least 10 recent demand deviations. Demand limitation for normal situations:

o Demand limitation in normal condition should be adjustable whenenergy is transmitted from network to the consumer and vice versa.

o Whenever the average sent or received current exceeded the normaldemand limitation (YA) for more than X sec. the supplier contactorshould be "ready for reconnection".

! Y is adjustable from 2A to 60A, by 2A steps.! X is adjustable from 30 sec. to 120 sec. by 1 sec. steps.

Default value should be 30sec. Demand limitation for emergency situations:

o If the Demand limitation in emergency situation is activated it hasthe priority to Demand limitation in normal situations.

o Demand limitation for emergency situation is activated when average

transmitted Current from the meter exceeded the emergencydemand limitation (SA) for more than K sec.

! S is adjustable from 2A to 60A, by 2A steps.! K is adjustable from 30 sec. to 120 sec. by 1 sec. steps.

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The smart meter shall have the possibility of being in prepayment mode. Insuch case, the following requirements are necessary:

o The prepay register shall enable the activation and deactivation ofprepay register locally (with a tool program) and on the level ofCentral System. The prepay register shall be inactive on default.

oThe delivered meter shall have a separate prepay decreasing registerin kWh. The prepay register shall enable the activation anddeactivation of prepay register locally (with a tool program) and onthe level of Central System. The prepay register shall be inactive ondefault.

o The prepay register shall be 24h day register.o The meter shall enable from the level of Central system the following

functions locally and remotely:! Within the activation of prepay, sending to the registers the

volume of energy that was bought in kWh;! Reading the current remaining amount of energy in kWh;! Leaving on registers the volume of energy or zero the

registers in case of prepay deactivation;! Complement integer register on the amount of purchased

energy in kWh remotely and a locally (using software tool);! Setting the minimal threshold of kWh that remains until the

credit will run out. When the meter reached the threshold, itshall be signalized (on the meter or on the display);

! Register of events about exceeding the minimal threshold untilempty credit;

! Register the event about exhausting the credit.o The meter shall provide automated switch-off of the installation after

the credit run out.

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73&D */1 73*9 The meter shall be connected since its installed in the customer premise.


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II /C

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The smart meters shall be capable of using the communication technology definedin the datasheet. In this section due to the two types of meters single and three

phase- the options shall be either PLC or RF Communications. Therefore the smartmeters shall be equipped with a fixed communication module2device accordingly.Communications shall be in any case compliant with the provisions included in theTechnical Specifications for Communications attached to this document.

In either case, the meters could be designed as:

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The smart meters shall be equipped with a fixed built-in PLC communicationmodem. This communication technology shall provide technical performanceand quality characteristics to transmit and receive data between the smartmeters and a data concentrator locally positioned at the LV distribution

transformer location. The data readout protocol in the PLC communication and through the meter

communication interfaces shall be compliant with the communicationtechnologies described in the technical specifications for communicationsattached to this document.

The PLC communication units shall be able to establish a self-configured,self-healing PLC network supporting:

o Star network topology.o Tree network topology.

The appliance of PLC technology shall provide data communication betweensmart meters (data collectors/building gateways) and hub/dataconcentrators at the LV distribution transformer locations.

The applied PLC technology shall provide data transmission rates up to 2400bps.

The communication module shall ensure effective delivery of messages andalerts from the meters to the central system in the immediate mode, takinginto consideration physical possibilities connected with the appliedcommunication technology.

As a minimum, the meter shall have the following communication interfaces:o For local communication and programming the meter: optical

interface, in accordance with IEC 62056-21.

;"#"!"! I*:2J K*1+(@.28&2/,9 =2'2.

The radio frequency communication technology shall comply with thedescription of features and international standards in technical specificationsfor communications attached to this document.

The smart meters shall be equipped with a fixed built-in RF networkcommunication module. The RF network communication module in order totransmit and receive data between the smart meters and a dataconcentrator locally positioned in the area shall provide securecommunication.

The RF network communication modules shall be able to establish a self-configured, self-healing wireless network supporting:

o Star network topology.

2This module may be detachable (by means of a RS-485 connector) if the Client request soin the Specifications Data sheet.


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Tech. Spec. of AMI for Vietnam Final Report Volume II /F

o Tree network topology.o Meshed network topology.

The appliance of RF network technology shall provide data communicationbetween:

o Smart meters (data collectors/building gateways) and dataconcentrators at the LV distribution transformer locations.

o Smart meters (data collectors/building gateways) and meterrepeaters or hub/data repeaters.

;"#"!";


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II /E

o Reactive Power: kVAr.

o Reactive Energy: kVArh.

o 2-Quadrant metering.

o Instant value of voltage and current.

;,A,=

R02*%&+*/0 Single-Phase: Number of Phases: 1+N Single Rate

o Nominal (Maximum) Current: 5(80)Ao Nominal Voltage: 288Vo Calibration interval: !4 yearso Nominal Frequency (fn): according to the Distribution Code of

Vietnam, the nominal frequency of national power system is 50 Hz.o Extended operating frequency range: allowed variations of 0.2 Hz in

normal operating state, and 0.5 Hz in instability situation.o Voltage circuit with power supply connected: "2W/ 5VA.o Nominal Voltage: standard reference voltage value for direct

connection is 240V. Meter input voltage range for normal operationshould be from 80% to 115% of nominal voltage.

Three-Phase: Number of Phases: 3+N Single Rateo Nominal (Maximum) Current: 15(100)Ao Nominal Voltage: 415Vo Calibration interval: !4 yearso Nominal Frequency (fn): according to the Distribution Code of

Vietnam, the nominal frequency of national power system is 50 Hz.o Extended operating frequency range: allowed variations of 0.2 Hz in

normal operating state, and 0.5 Hz in instability situation.

o

Voltage circuit with power supply connected: "2W/ 5VA.o Nominal Voltage: standard reference voltage value for direct

connection is 440V. Meter input voltage range for normal operationshould be from 80% to 115% of nominal voltage.

Current circuit at basic current Ib: "4VA Short time over current: !30I max according to IEC for 0.01 sec. Starting current: 0.5% In (IEC 62052-11).

;,A,A

R$Y+&'$92$%/0 Temperature range according to the IEC 6205-11 for the smart meters

should be:o Temperature range for inside of premises installed meters: -25C to

+55C.o Temperature range for installed meters outside of premises: -25C to

+70C. Operation and storage and transport of the meter at the extremes of this

temperature range should only be for a maximum of 6h. Relative humidity: according to the IEC 6205-11 the meter shall be designed

to withstand the following climatic conditions:o Annual mean: 85%o 60 days spread in a natural manner over a year: 95%o Occasionally on other days: 75%

Protection class: As a minimum the casing shall ensure the degree ofprotection of IP53 according to UNE/EN 60529.


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II /L

;,A,C


including 2 decimals. The meter display shall be LCD with good contrast andwide viewing angle for easy meter readout. The display image area shall be

easily readable from a distance of approximately 1 meter. It should have awide operating temperature range (industrial grade) and a lifetime of atleast 15 years. The display shall have 8 digits for the cumulative energy,with digit height of 7.5-10 mm. The cumulative readout will be of whole kWhonly, including leading zeros, and shall be the default display at meter powerup. Every numerical element of an electronic display shall be able to show allthe numbers from zero to nine.

General requirements:o Data displayed shall be programmable;o Auto scrolling shall be used for changing displayed data;o Displayed data time duration shall be programmable;o

Displayed data programmable parameters should be in destinedconfiguration file;o Energy Data;o Total kWh tariff;o Peak Demand KW;o Current tariff number;o Quadrant indication;o The status of relay;o Monthly value accompanied by its respective date and time;o Displayed formats: kWh shall have a 6 digits display;o Date &Time: DD/MM/YY 24 h;o High resolution display mode;o Phases existence/non existence;o Phases sequence order;o Negative consumption flag (the flag shall be extinguished after

reading);o Failure indication and code (if any);o Tamper.

Verification LED: the meter shall be equipped with a test output device thatis accessible from the front in the form of a flashing LED in proportion to themeter constant to test accuracy of the meter on site.

Clock and Calendar: The microprocessor-based meter shall have a built-inclock and calendar having an accuracy of at least 0.5 seconds per day inaccordance with IEC 62052-21 / 62054-21, without the assistance of an

external time-synchronizing pulse. The date and time shall be displayed ondemand. The clock shall be synchronized by time signals received throughthe local or remote communication interface and upon national standard.

Sealed terminal cover: according to the Distribution Code the wholemetering system must be sealed to prevent illegal accesses. The cover shallbe made of plastic and fitted in such way that the internal parts of the meterare accessible only after breaking the meter cover seals.

Meter cover seals: At least one visible seal has to be provided in such a waythat the internal parts of the meter are accessible only after breaking theseal(s).


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II :J

Meter terminal seals: At least one visible seal have to be provided and noaccess to the terminals shall be possible without breaking the seal(s) of theterminal cover(s).

;,A,E

@+92$4+'$4 /$( 0/H')% Single-phase meter:

o Smart meter dimensions shall be such that it can be placed inside thecurrent meter premise.

o Net weight of a smart meter shall be up to 1kg.o Its preferable that the installation triangle is according to the DIN.

Three-phase meter:o Smart meter dimensions shall be such that it can be placed inside the

current meter premise.o Net weight of a smart meter shall be up to 1.5kg.o Its preferable that the installation triangle is according to the DIN.

;,A,F

?'$$2*%+'$ (+/G&/9 /$( %2&9+$/0 9/&T+$G4 Each meter shall be clearly marked with the connection diagram, preferably

shall be placed on the meter or cover of the terminal strap of the meter.

;,A,D

>/%%2&H The meter shall also be provided with lithium battery as a backup. Maintain clock and calendar and anti tampering features of the meters.

Battery charge condition (meter should indicate the battery status anddisplay it on LCD 6 month before complete discharge also battery status

should be readable by meter read).

;,A,"3

Record short power cut N 2, 3, 4, etc.

Internal memory

Register in non-volatile memory kW, kWh, V, I Required

Register in non-volatile memory Events/Alerts Required


Load Profiling

Number of channels of remotelyconfigurable load profile datathat can be captured atprogrammable intervals.

Number !8

Programmable intervals minutes Up to 15min

Load profile storage capacity values !4 months withsamples every 30

minTime of Use

Active Energy Tariffs 4

Maximum Demand Required


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II :L

Functionalities

SpecificationsUnits Data Confirmed

ValueAutomatic change of seasonable timetable

Seasons Number 12

Communications

Meter with Detachable RS-485Communications Module Required/NotRequiredThree-Phase Meter withintegrated GSM/GPRS modem


Three-Phase Meter withintegrated 2G/3G modem


Three-Phase Meter withintegrated fiber optic modem


Communication Interfacesfor Local Reading

Optical interface acc. To IEC62056-21

bps 1200-9600

RMR interface Serial interfaceacc. to IEC 62056-21 to module

bps 1200-9600

For Meters with Modularcommunication:Modular communicationinterface allowing the exchangeof communication units withoutthe breaking of the calibrationseal.

Required

Multi-channel communicationSimultaneous and independentcommunication via optical andelectrical interfaces.

Required

Interoperability


Meter to MDMS Required

Security Features



Firmware Update


Integrated Disconnect/ Reconnect Switch

Maximum Switching current A 100

Maximum overload current A 120/150Short Circuit current < 10 ms

Switching cycles Number 10,000

Maximum Switching Power kVA 27

Customers manualdisconnection

Yes/No

Power demand exceedingManagement

Yes/no Required

Remote controllable Yes/no Required

Anti-tampering operation

The meter shall measure

energy with a maximum of 3%added error in case of missing

Required


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II A:

Functionalities


Valuerating is 250V,5A; fullyisolated.

Load Disconnect Contactor Required


Height mm max 300

Width mm max 200

Depth mm max 100

Net weight kg


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II AA

=

.)$*%+'$/0 /$( 12*3$+*/0 452*+6+*/%+'$4 6'& >?@ 89/&%

:2%2&4

=,"

8*'52

This specification covers the functional and technical requirements for three-phasesmart meters within the scope of the BCD clients category. The category BCD isdefined for Industrial and Construction customers plus Commercial and Agriculturalcustomers as well as the bulk points.These meters shall be installed at the clients premises according with the locallegislation and using meter boxes if it would be required.



The smart meters shall be provided with related documentation, like, but notlimited to, manufacturer information, product data sheet, material and testingcertificates (where applicable), operational philosophy/manual (where applicable),and maintenance instructions.

=,-













LV Low Voltage

MDMS Meter Data Management System





RF Radio Frequency


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II AC


TOU Time Of Usage


=,;

7550+*/N02 8%/$(/&(4The international community has already defined most of the standards required foraccuracy measurement, tariff, security and load control features, as well as dataexchange for meter reading. However communications standards are still indefining process in most of the countries and each country has selected a differenttechnology. In addition the local standards shall be taken into consideration andshould be included once they are defined. The applicable IEC standards for single-phase meters of this category are:

IEC 62052-11 - General requirements: metering equipment.

IEC 62052-21 Tariff and load control equipment.

IEC 62052-31 - Safety requirements.

IEC 62053-22 - Particular requirements: static meters for active energy(classes 0.2S and 0.5S).

IEC 62053-24 - Particular requirements: static meters for reactive energy(classes 0.5 and 1).

IEC 62053-61 Part 61: power consumption and voltage requirements.







=,=

.)$*%+'$/0 &2V)+&292$%4Requirements for three-phase smart meters shall comply with the followingfunctionalities:

=,=,"

X52&/%+'$/0

#"#"$"$

%&'()*'+, (. (/012)*/1 ,(332,'+(/ (4 5(62. 1*'*

The meter shall measure and register active and reactive energy in twodirections forward and reverse energy measurements (4-quadrant).

The automatic or on-demand readings should be performed in 15 minutes,

30 minutes, 1 day and monthly basis.


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II AF

#"#"$"!

7(62. 8&*3+'9 */*39:+:

Meter should record under voltage and overvoltage and also power cut. Events related to under voltage and overvoltage should be recorded in the

meter. Threshold of under voltage is from 57.7 to 100 and for overvoltage isfrom 240 to 415.

These events won't be recorded unless they continue for equal or much

more time than the time set for under voltage and overvoltage threshold.This time may adjust between 1 to 60 seconds (by 1 sec. steps).


For each overvoltage, max. Voltage during one period should be detectedand recorded.

Parameters related to threshold and duration of under voltage andovervoltage should be adjustable locally and remotely.

Events related to power cut should be recorded in the meter as flowing:o For long duration power cuts (more than 3 min), duration time and

date should be recorded.o For short duration power cuts, number of power cuts should be

recorded.

#"#"$";


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II AI

! Programming the level 3 password and the level 4 password. Each meter password should have inaccessible and protected codes. The meter must have integrated security of transmitted data against

unauthorized access, for example, authentication, unauthorized reading,unauthorized command generating, and the malicious delivery of false data,as well as against spying out the line of communication.

The exchange of data between the meters and the metering datamanagement system shall be encrypted.

The meter shall be compatible with the provisions established in the cyber-security section, which also includes the security features of thecommunications and the MDMS.

#"#"$"?

@+.)6*.2 A51*'2

The meter shall allow local and remote update of firmware. Software for local operation, diagnostics and reporting on the operation of

the meters, enabling full configuration, provisioning, diagnostics and readout

of metering data and events from the meter. New software versions shall be able operate equipment previously

purchased by the ordering entity from the supplier. Configuration files from an older software version shall be operable in newer

versions. The software for local operation of the meters shall enable export of

metering data, events and configurations from the meters to text files (TXT,CSV, XML) with a documented structure.


#"#"$"B C(*1 7.(4+3+/D

At least 8 programmable channels for:o active and reactive interval energy (import and export),o active and reactive cumulative energy (import and export).

Adjustable time interval from 1 to 60 minutes. At least 4 programmable channels for voltage and current as well as active

and reactive power. Measurement type for each channel can be chosen as follows:

o Average;o Minimum;o Maximum.

Adjustable time interval from 1 to 60 minutes. Meter should keep above parameters at least for 31 days. The meter shall include binary relay whose state shall be changed once the

demand overpass a threshold defined by the client.

#"#"$"E R+)2 (4 A:2

Meter should be able to calculate and register costumer's active and reactiveenergy consumption in time intervals as bellow:

o Division of each day in to at least 8 consecutive and adjustable timeintervals;

o Four tariffs for active/reactive energy and Max. Demand & recordthem for normal days and holidays separately and also totally as wellas recording of highest Max. Demand;

! 8 day profiles;! 12 seasons;


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II AE

! 50 definable special days;! week profile.

#"#"$"G 6+',O

The contactor's operation reasons:o Consumption limitation;o Consumer disconnecting / connecting.

#"#"$"H %&'()*'+, ,O*/D2 (4 :2*:(/*L32 '+)2'*L32

At least 12 seasons shall be definable. A season shall be defined by a month and a day. Season starting at 00:00 hours of the defined day in every year. Shall be superseded when the next season becomes effective. Holidays and weekdays shall be definable during a season. Ending of a maximum demand time interval shall be performed before the

end of a season. If necessary, self-reading shall be performed before a newseason becomes effective.

#"#"$"$T


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II CJ

The figures of the imprinted serial number shall be of at least 4 mm heightand 2 mm width.

The meter shall maintain accuracy throughout its useful life. These energymeters shall be microprocessor-based, high-precision meters with accuracyclass 2 over its lifespan of 15 years.

The meter shall be capable of displaying the energy readings without the

need for multiplying factors. These readings shall be stored for at least 3billing periods. The billing period shall be programmable to a minimum valueof one month and for energy and maximum demand.

Insulation protection class should be 2. Meter calibration should be kept during its lifetime and there should be no

need for re-calibration. Meter should be protected against Electromagnetic Compatibility (EMC). The meter shall enable remote synchronization of time:

o after installation upon initiation of connection with theconcentrator,

o upon request,o on a regular basis period predefined by PCs (from one day to one

month).

=,A,-

:2%2& (24+G$ The meter shall be DIN or A Base type. The meter shall have state-of-the-art surface mount technology (SMT)

components. The cover shall be made of plastic and fitted in such a way that the internal

parts of the meter are accessible only after breaking the meter cover seals. The plastic for the terminal block, meter cover, and base shall be flame-

retardant and UV-stabilized, passing a glow wire test at 960C. The terminal block may be integral with the meter base.

Components with critical content materials (mercury, cadmium, cobalt etc.)should be avoided. A simply separation into different fractions for disposal(no metal parts molded in plastics) in a recycling process at the end of themeter lifetime should be possible.

The meters shall have conducting terminals suitable for termination ofcurrent and potential leads. The terminals shall have a minimum innerdiameter of 8 mm.

The manner of fixing the conductors to the terminals shall ensure adequateand durable contact such that there is no risk of them coming loose orheating up unduly. Two nickel-plated brass screws shall be provided in eachcurrent terminal for effectively clamping the external leads with thimbles.Each clamping screw shall engage at least 3 threads in the terminals. The

ends of the screws shall be such as not to pierce the conductor. Pressurestrips of copper that is nickel or tin-plated shall be fitted in the terminalholes to reduce the chances of the leads coming loose or heating up in theterminal block.

The terminal cover shall be sealed independently of the meter cover. Theterminal cover shall enclose the actual terminals, the conductor fixingscrews, the external conductors, and their insulation, whereby no part of themeter or cables shall be accessible from the front of the meter.

The fixing screws used on the terminal cover for fixing and sealing shall beretained in the terminal cover.

The terminal block, terminal cover, and meter case shall ensure safetyagainst the propagation of fire or thermal overload of live parts coming intocontact with them.


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II C/

=,A,C


including 2 decimals. The meter display shall be LCD with good contrast andwide viewing angle for easy meter readout. The display image area shall be

easily readable from a distance of approximately 1 meter. It should have awide operating temperature range (industrial grade) and a lifetime of atleast 15 years. The display shall have 8 digits for the cumulative energy,with digit height of 7.5-10 mm. The cumulative readout will be of whole kWhonly, including leading zeros, and shall be the default display at meter powerup. Every numerical element of an electronic display shall be able to show allthe numbers from zero to nine.

General requirements:o Data displayed shall be programmable;o Auto scrolling shall be used for changing displayed data;o Displayed data time duration shall be programmable;o

Displayed data programmable parameters should be in destinedconfiguration file;o Energy Data;o Total kWh tariff;o Peak Demand KW;o Current tariff number;o Quadrant indication;o The status of relay;o Monthly value accompanied by its respective date and time;o Displayed formats: kWh shall have a 8 digits display;o Date &Time: DD/MM/YY 24 h;o High resolution display mode;o Phases existence/non existence;o Phases sequence order;o Negative consumption flag (the flag shall be extinguished after

reading);o Failure indication and code (if any);o Tamper.

Verification LED: the meter shall be equipped with a test output device thatis accessible from the front in the form of a flashing LED in proportion to themeter constant to test accuracy of the meter on site.

Clock and Calendar: The microprocessor-based meter shall have a built-inclock and calendar having an accuracy of at least 0.5 seconds per day inaccordance with IEC 62052-21 / 62054-21, without the assistance of an

external time-synchronizing pulse. The date and time shall be displayed ondemand. The clock shall be synchronized by time signals received throughthe local or remote communication interface and upon national standard.

Sealed terminal cover: according to the Distribution Code the wholemetering system must be sealed to prevent illegal accesses. The cover shallbe made of plastic and fitted in such way that the internal parts of the meterare accessible only after breaking the meter cover seals.

Meter cover seals: At least one visible seal has to be provided in such a waythat the internal parts of the meter are accessible only after breaking theseal(s).


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II C:

Meter terminal seals: At least one visible seal have to be provided and noaccess to the terminals shall be possible without breaking the seal(s) of theterminal cover(s).

=,A,E

@+92$4+'$4 /$( 0/H')% Smart meter dimensions shall be such that it can be placed inside the

current meter premise. Net weight of a smart meter shall be up to 1.5kg. Its preferable that the installation triangle is according to the DIN reference.

=,A,F

?'$$2*%+'$ (+/G&/9 /$( %2&9+$/0 9/&T+$G4 Each meter shall be clearly marked with the connection diagram, preferably

shall be placed on the meter or cover of the terminal strap of the meter.

=,A,D

>/%%2&H The meter shall also be provided with lithium battery as a backup. Maintain clock and calendar and anti tampering features of the meters.

Battery charge condition (meter should indicate the battery status anddisplay it on LCD 6 month before complete discharge also battery statusshould be readable by meter read).

=,A,"3

Record short power cut N 2,3,4,etc

Internal memory

Register in non-volatile memory kW, kWh, V, I Required

Register in non-volatile memory Events/Alerts Required


Communications

Meter with Detachable RS-485 Required/Not


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II CI

Functionalities


ValueCommunications Module Required

Meter with integrated 2G/3GModule


Meter with integrated Fiber

Optic Module

Required/Not

RequiredCommunication Interfaces

for Local Reading

Optical interface acc. To IEC62056-21

bps 1200-9600

RMR interface Serial interfaceacc. to IEC62056-21 to module

bps 1200-9600

For Meters with Modularcommunication:Modular communicationinterface allowing the exchangeof communication units without

breaking the calibration seal.

Required

Multi-channel communicationSimultaneous and independentcommunication via optical andelectrical interfaces.

Required

Interoperability


Meter to MDMS Required

Security Features



Firmware Update


Load Profiling

Number of channels of remotelyconfigurable load profile datathat can be captured atprogrammable intervals.

Number !8

Programmable intervals minutes Up to 15min

Load profile storage capacity values !4 months withsamples every 30

minTime of Use

Active Energy Tariffs 4

Maximum Demand Required

Integrated Disconnect/ Reconnect Switch

Reference Current In A 1-5

Maximum Switching current Imax

A 2xIn

Maximum overload current A 120/150

Short Circuit current < 10 ms

Switching cycles Number 10000

Maximum Switching Power kVA 27

Customers manualdisconnection

Yes/No


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II CL

Functionalities


ValueMetrology

Active energy IEC 62053-21 Class Class 0.5 or 0.2

Reactive energy IEC 62053-23 Class Class 1

Active Power kW Required

Active Energy kWh Required

Reactive Power kVAr Required

Reactive Energy kVArh Required

Four-Quadrant Metering IV Required

Instant value of Voltage RequiredInstant value of Current Required

Current

Minimum Base Current lbaccording to IEC

A 15

Maximum current Imaxaccording to IEC

A 2xIn

Starting current according toIEC

%In 0.2%

Short time overcurrent A !30 Imax

Voltage

Standard reference Voltage Un(IEC 60038)

V 57,7/100V240/415V

Operation range %Un 70%-120%

Voltage failure bridging time s 0.5

Voltage restoration Function

standby after

s #5

Calibration interval Years !4

Frequency

Nominal frequency Hz 50

Extended operating frequencyrange

% 2

Environmental

Temperature range (limitoperation range) for inside ofpremises installed meters

!C -25!C to +55!C

Temperature range (limitoperation range) for installed

meters outside of premises

!C -40!C to +70!C

Relative humidity as per IEC62052-11

% 5-95

Protection class according toIEC 60529

IP53

Terminal block !C 960!C 15!C

Terminal cover and meter case 650!C 10!C

Duration of application s 30s 1s

Mechanical

Designed wire connections 3-phase 3-phase 4-wire

Lifetime years !15 years

Display

Dimensions: Digitize in value Required


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II FJ

Functionalities


ValueField "8mm

Display of values:Programmable display sequence

Required

LCD (Dimensions) 8 segments, 8

digits

Required

Material Liquid crystaldisplay

Required

Clock and calendar Accuracy(IEC 62052/54-21)

Delay +/- 0.5 sec/ day

Persian calendar including Leap year, Daylight saving

time, summerand winter clockand tariffs fornormal days,weekend, and

public holidays.

Required

Sealed terminal cover Required

Opening terminal cover

sensor

Required

Meter Cover seals At least onevisible seal hasto be providedin such a way

that the internalparts of themeter are

accessible onlyafter breakingthe seal(s).

Required

Meter Terminal seals At least one

visible sealhave to beprovided and noaccess to theterminals shallbe possiblewithoutbreaking theseal(s) of theterminalcover(s).

Required

Power consumption

In the voltage circuit with

power supply connected

W

VA

#$

#%

Current circuit at basic currentlb

VA #4

Internal Power Consumption

Max. ValueNote: value for powerconsumption is for meterwithout communication modem.

VA 10VA (2W) forvoltage circuit each

phase4VA for phasecurrent circuit

Electromagnetic Compatibility

Contact discharge kV 8

Air discharge kV 15

Current and voltage circuits kV 4


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II F#

Functionalities


ValueAuxiliary circuits >40V kV 2

Insulation Strength

Insulation Strength at 50Hz for1 min

kV 4

Cut-Off Element

Control Relay Single-polevoltage-freelatching relay;maximum loadrating is 250V,5A; fullyisolated.

Required

Load Disconnect Contactor Required


Height mm max 300

Width mm max 200

Depth mm max 100

Net weight kg


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II F/

A

12*3$+*/0 852*+6+*/%+'$4 6'& :2%2& >'B24

A,"

8*'52

This specification covers the design, manufacturing and testing of a Single andThree Phase Energy Meter Boxes made from Polycarbonate grade A. The Box maycontain one (1) to four (4) meters.

A,- 7550+*/N02 Z'&94

The equipment covered by this specification shall conform to the requirementsstated in latest editions of relevant IEC Standards and shall conform to theregulations of local statutory authorities.

IEC 60529 Degrees of protection provided by enclosures;

IEC 62262 Degrees of protection by enclosures for electrical equipmentagainst external mechanical impacts (IK code);

IEC 85 Thermal evaluation and classification of electrical insulation;

IEC 707 Methods of test for the determination of the flammability of solidelectrical insulating materials when exposed to an igniting;

IEC 695-2 Resistance to heat and fire;

IEC 60439-1 Double insulation;

IEC 947 Low voltage Circuit Breakers;

ISO 14782 Plastics Determination of haze transparent materials.

In case any conflict between standards and this specification, this specification shall

govern.

A,;

12*3$+*/0 &2V)+&292$%4The electrical and mechanical characteristics, materials used, dimensions and othertechnical specifications are detailed below.

A,;,"

R02*%&+*/0 *3/&/*%2&+4%+*4

The following electrical characteristics shall apply:

Dielectric strength up to 5kV;

Rated voltage: 400V;

Frequency: 50Hz;

Type of connection: Single-phase system.

A,;,-

:/%2&+/04

Base and cover of meter boxes are built in polycarbonate transparent grade A, with

additives for U.V. rays and a minimum thickness of 1.5 mm. The material must be

resistant to heat and fire, also be self-extinguishing, according to standard IEC 707

and 695-2-1/0.w.


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II FA

meters. It should provide a set of three screws No 12 x 1.27 mm galvanized for

each meter box.

Note: The cabinet builder should be addressed to the Laboratory Meter Company

for the respective drilling templates.

?";";"B

I3(:&.2 */1 :2*3+/D 12Z+,2

a) The design of the lid and base to prevent the contour opening once closed

and secured by a cover. The cover in closed position should be overlapped

on base such that direct entry of screwdriver, tool or film is not possible.

b) The cover shall be provided with semi circular / circular gasket of sufficient

size to completely fit to the base. The gasket should be made out of good

quality neoprene rubber.

c) The cover of Transparent Polycarbonate Material shall have lighttransmission of 80% or more (to be tested as per 14782:1999). This will

facilitate photometer reading as well as transparency. This will facilitate

photometer reading as well as transparency.

d) The locking screw should be of sheet metal with triangular head 5 mm per

side. The end cap of the box should have a sealed system, so that may be

evident in the same access by unauthorized persons.

e) The meter box must have the lead seal so that the meter box cannot be

opened without break the seal.

?";";"E

7.('2,'+(/:

a) The Box may include circuit breakers as per the instructions. In case the box

shall include circuit breakers, the same shall include a 63A/2P Circuit

Breaker for each of the meter units.

b) Boxes containing 4 meters shall also have a general circuit breaker of no

less than 220A/2P to protect the entire installation.

?";";"G


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II FC

General arrangement drawing of the meters box;

Terminal Block dimensional drawing (if any);

Mounting arrangement drawings;

General description of the Box and all components with makes and technical

requirement; Type Test Certificates;

Experience List;

Manufacturing schedule and test schedule.

b) Drawings/documents to be submitted after the award of the contract:

Technical Parameters;

General Arrangement drawings;

Terminal block Dimensional drawings (if any);

Circuit breakers technical parameters;

Mounting arrangement drawing;

Transport/Shipping dimension drawing;

QA &QC Plan;

Routine, Acceptance and Type Test;

Certificates;

Certification on encryption, database security and reliability.


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AF-MERCADOS EMI

Tech. Spec. of AMI for Vietnam Final Report Volume II FF

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Tech. Spec. of AMI for Vietnam Final Report Volume II FI

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