cgm.3 system Medium voltage gas-insulated cubicles up to ... · SF6 gas-insulated cubicles up to...

IG-136-EN

version 09

General Instructions

cgm.3 system

Medium voltage SF6 gas-insulated cubicles

up to 40.5 kV

LIB

04.02.2015

Secondary Distribution Switchgear

Primary Distribution Switchgear

Protection and Automation

Distribution Transformers

Transformer Substations

Low Voltage Boards

Secondary Distribution Switchgear

Primary Distribution Switchgear

Protection and Automation

Distribution Transformers

Transformer Substations

Low Voltage Boards

CAUTION!

When MV equipment is operating, certain components are live, other parts may be in movement and some may reach high temperatures. Therefore, the use of this equipment poses electrical, mechanical and thermal risks. In order to ensure an acceptable level of protection for people and property, and in compliance with applicable environmental recommendations, Ormazabal designs and manufactures its products according to the principle of integrated safety, based on the following criteria:

Elimination of hazards wherever possible.

Where elimination of hazards is neither technically nor economically feasible, appropriate protection functions are incorporated in the equipment.

Communication about remaining risks to facilitate the design of operating procedures which prevent such risks, training for the personnel in charge of the equipment, and the use of suitable personal protection equipment.

Use of recyclable materials and establishment of procedures for the disposal of equipment and components so that once the end of their service lives is reached, they are duly processed in accordance, as far as possible, with the environmental restrictions established by the competent authorities.

Consequently, the equipment to which the present manual refers complies with the requirements of section 11.2 of the IEC standard 62271-1. It must therefore only be operated by appropriately qualified and supervised personnel, in accordance with the requirements of standard EN 50110-1 on the safety of electrical installations and standard EN 50110-2 on activities in or near electrical installations. Personnel must be fully familiar with the instructions and warnings contained in this manual and in other recommendations of a more general nature which are applicable to the situation according to current legislation. The above must be carefully observed, as the correct and safe operation of this equipment depends not only on its design but also on general circumstances which are in general beyond the control and responsibility of the manufacturer. More specifically: The equipment must be handled and transported appropriately from the factory to the place of installation.

All intermediate storage should occur in conditions which do not alter or damage the characteristics of the equipment or its essential components.

Service conditions must be compatible with the equipment rating.

The equipment must be operated strictly in accordance with the instructions given in the manual, and the applicable operating and safety principles must be clearly understood.

Maintenance should be performed properly, taking into account the actual service and environmental conditions in the place of installation.

The manufacturer declines all liability for any significant indirect damages resulting from violation of the guarantee, under any jurisdiction, including loss of income, stoppages and costs resulting from repair or replacement of parts. Guarantee

The manufacturer guarantees this product against any defect in materials and operation during the contractual period. In the event that defects are detected, the manufacturer may opt either to repair or replace the equipment. Improper handling of this equipment and its repair by the user shall constitute a violation of the guarantee. Registered Trademarks and Copyrights

All registered trademarks cited in this document are the property of their respective owners. The intellectual property of this manual belongs to the manufacturer. In view of the constant evolution in standards and design, the characteristics of the elements contained in this manual are subject to change without prior notification. These characteristics, as well as the availability of components, are subject to confirmation by Ormazabal.

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GENERAL INSTRUCTIONS CGM.3 SYSTEM

MEDIUM VOLTAGE CUBICLES SF6 INSULATED

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General Instructions cgm.3 system

Medium voltage cubicles SF6 insulated

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Contents 1. Description and main characteristics .................................................................................... 4

1.1. Cubicle elements ........................................................................................................................ 5

1.2. Mechanical characteristics ....................................................................................................... 14

2. Transport ................................................................................................................................. 16

2.1. Lifting methods ......................................................................................................................... 16

2.2. Location of documentation and accessories during transport .................................................. 18

3. Storage .................................................................................................................................... 19

4. Installation............................................................................................................................... 21

4.1. Unpacking the equipment ......................................................................................................... 21

4.2. Civil engineering works ............................................................................................................. 22

4.3. Fastening to the floor ................................................................................................................ 23

4.4. Connecting the cubicles ........................................................................................................... 27

4.5. Earthing the equipment ............................................................................................................ 27

4.6. Cable connection ...................................................................................................................... 28

4.7. Assembly and connection of metering transformers ................................................................ 28

5. Recommended sequence of operations .............................................................................. 29

5.1. Checking voltage presence and phase balance....................................................................... 29

5.2. Operating levers ....................................................................................................................... 30

5.3. cgm.3-l cubicle .......................................................................................................................... 32

5.4. cgm.3-s cubicle .......................................................................................................................... 34

5.5. cgm.3-s-ptd cubicle ................................................................................................................... 35

5.6. cgm.3-s-pti cubicle .................................................................................................................... 37

5.7. cgm.3-p cubicle ......................................................................................................................... 39

5.8. cgm.3-rb cubicle with earthing .................................................................................................. 45

5.9. cgm.3-v cubicle with RA(M)V driving mechanism ..................................................................... 46

5.10. cgm.3-v cubicle with A(M)V driving mechanism ....................................................................... 50

5.11. cgm.3-v cubicle with driving mechanism AV (3G) and RAV (3G) ............................................. 54

6. Interlocks ................................................................................................................................. 58

7. Maintenance ............................................................................................................................ 59

7.1. Voltage presence indicator test ................................................................................................ 60

7.2. Acoustic earthing prevention alarm test ................................................................................... 61

7.3. Specific maintenance for the cgm.3-v cubicle........................................................................... 63

8. Additional information ........................................................................................................... 64

8.1. Spares and accessories ........................................................................................................... 64

8.2. Environmental information ........................................................................................................ 66

GENERAL INSTRUCTIONS FOR CGM.3 SYSTEM


General instructions for cgm.3 system


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1. Description and main characteristics

cgm.3 system is made up of a range of fully insulated modular and compact SF6 cubicles, which allow the configuration of different medium voltage (MV) secondary electrical distribution diagrams up to 40.5 kV.

Modular units

cgm.3-l Feeder cubicle

cgm.3-s Busbar switch cubicle[1]

cgm.3-s-pt Busbar switch cubicle with earth connection on the right (-ptd) or on the left (-pti)[1]

cgm.3-p Fuse protection cubicle

cgm.3-v Circuit breaker cubicle

cgm.3-rb Busbar rise panel

cgm.3-rc Cable rise cubicle

cgm.3-m Metering cubicle[1]

Compact units

cgm.3-2lp Cubicle with two feeder functions and one fuse protection function[1]

This cubicle system has been designed to meet the requirements of the following standards:

Standard Description

IEC 62271-1 Common specifications for high-voltage switchgear and controlgear standards.

IEC 62271-200 Alternating current metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV.

IEC 62271-102 Alternating current disconnectors and earthing switches.

IEC 62271-103 High voltage switches for rated voltages above 1 kV up to and including 52 kV.

IEC 62271-105 Alternating current switch-fuse combinations.

IEC 62271-100 High voltage alternating current circuit breakers.

IEC 60529 Degrees of protection provided by enclosures.

IEC 61958 / IEC 61243-5

Voltage presence indicating systems.

[1] Available up to 36 kV.

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1.1. Cubicle elements

Each cubicle is made up of a series of independent compartments:

Gas tank: sealed compartment which houses the busbar and the switching and breaking elements, where the insulating medium is SF6 gas. The tank has a membrane to allow gases to escape in the event of an internal arc.

Each tank has a manometer for checking the gas pressure, which can easily be seen from outside the cubicle. The manometer scale is divided into different colours: red, grey and green. For safe operation, the manometer needle must be in the green zone of the corresponding temperature band. Includes a padlockable coupling device which allows

the driving mechanism to be replaced regardless of the position of the switch-disconnector: closed, open or earthed.

1. SF6 tank.

2. Driving mechanism compartment.

3. Base:

3a. Cable Compartment.

3b. Gas relief Compartment.

3b

3

2

3a

3b

3

1 2

3a

1

Figure 1.2: Main components of compact cgm.3 cubicles

Figure 1.1: Main components of modular cgm.3 cubicles

1

Figure 1.3: Gas tank

Figure 1.4: Manometer

Figure 1.5: Device for coupling the switch





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Switch - disconnector and earthing switch: This has three positions: closed, open or earthed.

This switch is operated using driving mechanisms with two different actuation zones: one for the switch (switching between the Closed and Open positions); and the other for the earthing switch (which switches between the Open and Earthing positions) on the feeder cables, and in the case of fuse protection cubicles, on the six fuse holder clamps.

These elements are operated independently[2] so that their actuation speed does not depend on the speed of the manual operation.

Vacuum circuit breaker: The cgm.3-v cubicle's circuit breaker uses vacuum switching technology.

The circuit breaker is actuated by means of the push-button on the front of the cubicle. For manual operation, springs must be charged with the corresponding lever.

The cgm.3-v circuit breaker cubicle has two options for ensuring the isolating distance:

a) RA(M)V driving mechanism. The circuit breaker comes standard equipped with a disconnector and an earthing switch.

b) Driving mechanism A(M)V, A(M)V (3G) or RA(M)V (3G). The circuit breaker comes standard equipped with a switch-disconnector and an earthing switch.

In both cases, this element is operated using a specific lever depending on the type of driving mechanism.

The motorised cgm.3-v circuit breaker cubicles may optionally be equipped with an electromechanical safety device called an undervoltage coil. Its function is to ensure that the cubicle circuit breaker opens in the event of an unexpected drop of more than 30% in the auxiliary voltage.

CAUTION

When the cgm.3-v circuit breaker cubicles with A(M)V or RA(M)V driving mechanism have an undervoltage coil, a possible lack of auxiliary voltage in the coil could cause the cubicle to block if it is in earthing position. For these occasions, the undervoltage coil has a manual blocking mechanism that retains the trip rod while the manual mechanism remains actuated and the coil has no voltage. For more information on how to carry out the manual blocking of the undervoltage coil or how to act in the event of an accidental blocking of the cubicle, see the Spares and Accessories Instructions document RA-216.

[2] Applicable to cgm.3 system cubicles, except the disconnector of the cgm.3-v cubicle with RA(M)V driving mechanism.

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Where: a: Earthing switch actuation zone b: Switch-disconnector actuation zone (B and BM driving mechanisms) c: Switch and earthing switch position indicator d: Actuation shaft access handle f: ekor.vpis or ekor.ivds voltage indicator

Driving mechanism compartment: This is the compartment in which the switch-disconnector or the circuit breaker is actuated, depending on the type of cubicle. The mimic diagram for the Medium Voltage main circuit is displayed on the cover of this compartment. The mimic diagram includes all the position indicators for the actuators. Elements in the driving mechanism area of modular cubicles:

2

f

cgm.3-s cgm.3-l d

d

d

a

c

b

b

c

c

a

Figure 1.6: Mimic diagram of cgm.3-l cubicle Figure 1.7: Mimic diagram of cgm.3-s cubicle

cgm.3-s-ptd

b

a

c

d cgm.3-s-pti

b

Figure 1.8: Mimic diagram of cgm.3-s-ptd cubicle Figure 1.9: Mimic diagram of cgm.3-s-pti cubicle

f f





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gn

b

a

c

d

f

h

e c

a

md

l i

o

j n

f k

d

b

ca

f

i m

l j

n

k

cgm.3-p

Figure 1.10: Mimic diagram of cgm.3-p cubicle

cgm.3-v

Figure 1.11: Mimic diagram of RA(M)V type cgm.3-v cubicle Figure 1.12: Mimic diagram of A(M)V type cgm.3-v cubicle

Figure 1.13: Mimic diagram of cgm.3-v AV (3G) and RAV (3G) cubicle types

Where: a: Earthing switch actuation zone b: Simultaneous switch - disconnector actuation and spring charging zone (B driving mechanism) c: Switch and earthing switch position indicator d: Actuation shaft access handle e: Locking with an interlock f: ekor.vpis or ekor.ivds voltage indicator. g: Switch opening button (BR-A driving mechanism)

h: Fuse status indicator i: Operation counter j: Spring charging shaft k: Circuit breaker opening l: Circuit breaker closing m: Circuit breaker position indicator . n: Spring loading indicator o: Release of cable compartment cover interlock .

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d

a

c

f f

Where:

a: Earthing switch actuation zone c: Earthing switch position indicator d: Actuation shaft access handle f: ekor.vpis or ekor.ivds voltage indicator.

Figure 1.16: Mimic diagram of cgm.3-rc cubicle Figure 1.17: Mimic diagram of cgm.3-m cubicle

cgm.3-rb without earthing cgm.3-rb with earthing

Figure 1.14: Mimic diagram of cgm.3-rb cubicle with earthing

Figure 1.15: Mimic diagram of cgm.3-rb cubicle without earthing

cgm.3-rc cgm.3-m





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b

c

a

d

f

g n

h

Where:

a: Earthing switch actuation zone b: Switch actuation and spring charging zone (BR-A driving mechanism) c: Switch and earthing switch position indicator d: Actuation shaft access handle f: ekor.vpis or ekor.ivds voltage indicator. g: Switch opening button (BR-A driving mechanism) h: Fuse status indicator n: Spring loading indicator

Elements in the driving mechanism area of compact cubicles:

cgm.3-2lp Base: Made up of the cable compartment (3a) and the gas relief compartment (3b), see Figures 1.1 and 1.2. The first is located in the lower front part of the cubicle and has a cover interlocked with the unit's earth connection, which allows front access to the Medium Voltage cables. The gas relief compartment is located in the lower rear section of the cubicle. In the event of an internal arc, the gases produced are deflected downwards and to the rear, and in no way affecting any persons, cables, or the rest of the installation switchgear[3].

[3] For cubicles with an internal arc of 1 s, the gases are diverted to the pit.

Figure 1.18: Mimic diagrams of compact cgm.3-2lp cubicles

3

Figure 1.19: Cable compartment

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1.1.1. Voltage presence indicator

Ormazabal offers two options for the voltage presence indicator:

ekor.vpis unit for indicating the presence of voltage has been designed in accordance with the IEC 61958 standard. Therefore, the “presence of voltage” indication appears when the phase - earth voltage is greater or equal to 45% of the rated voltage and does not appear when the phase - earth voltage is less than 10% of the rated voltage.

ekor.ivds unit for detecting the presence of voltage has been designed in accordance with the IEC 61243-5 standard. Therefore, the “presence of voltage” is detected when the phase-earth voltage is between 45% and 120% of the rated voltage and does not appear when the phase-earth voltage is less than 10% of the rated voltage.

Both units provide a clear visual indication to the user, and do not require an auxiliary power supply to operate.

For each of the three phases, the presence of voltage is indicated by intermittent flashing of the indicators.

The voltage detection unit has the following indicators:

L 1, L2 L3 Display each of the indicator phases The numbering corresponds to the order of the phases, from left to right, seen from the front of the cubicle. Each phase has a test point for checking the phase balance between cubicles.

Voltage presence indicator A flashing light indicates the presence of voltage in that phase. Phase test points Each phase has a test point for checking the phase balance between cubicles.

Earth test point This is only used for comparing the phases.

Figure 1.20: Unit to indicate the presence of voltage The purpose of the test points for the three phases and earth is to make it easier to check the phase balance[4] between cubicles. Ormazabal's specific phase comparator ekor.spc can be used to do this.

CAUTION

If the indicators on the ekor.vpis unit do not light up, other methods should be used to check for the absence of voltage.

[4] See section 5.1. ekor.spc - Voltage presence and phase balance checking.

2 4

3

1

4

3

2

1





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1.1.2. ekor.sas - Acoustic earthing prevention alarm unit

ekor.sas earthing prevention alarm is an acoustic indicator which works in association with the earthing shaft handle and the ekor.vpis voltage presence indicator. Both operate within the same range. The alarm is activated when there is voltage in the cubicle's medium voltage feeder and the lever is inserted in the earthing switch shaft. A sound then warns the operator that if he performs the operation, a short - circuit in the network might occur.

NOTE

In the cubicles equipped with the ekor.vpis unit for the indication of the presence of voltage, the ekor.sas unit is fitted as standard in the cgm.3 system feeder function and can be supplied on request for the other functions.

The cubicles equipped with the ekor.ivds unit for detecting the presence-absence of

voltage are never fitted with the ekor.sas unit (option not compatible)

ekor.sas

Figure 1.21: Detailed view of location of ekor.sas in cgm.3-l cubicle

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Figure 1.22: Name plate in cgm.3-l cubicle

1.1.3. Name plate

Every cubicle includes a name plate, with some of the following values:

(*) In the event of a problem or non-conformity, please give this number to Ormazabal.

Name plate

No. Cubicle serial number(*)

Type Ormazabal cubicle system.

Identifier Cubicle model

Standard Regulations applied to the equipment

Denom. Equipment name

Ur Equipment rated voltage (kV)

Up Lightning impulse withstand voltage (kV)

Ud Power frequency withstand voltage (kV)

fr Equipment rated frequency (Hz)

Ir Equipment rated current (A)

Manual of instructions Manual of General Instructions (IG) corresponding to the system

Class Driving mechanism class according to IEC 62272-103 (formerly IEC 60265-1)

N Number of mainly active load breaking operations

Ik / Ip Short-time withstand current/Short-time withstand peak value

tk Short-time withstand current time

Pre Gas pressure inside the tank (MPa)

Pme Minimum operating gas pressure (MPa)

SF6 Weight of insulating fluid (g)

Year Year of manufacture

TC Thermal class

IAC Internal arc classification





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1.2. Mechanical characteristics

The dimensions and weights of the cgm.3 cubicle system are represented in the following table.

Figure 1.23: cgm.3 dimensions

Module Width

(a) [mm]

Depth (f) [mm]

Height (h)

[mm]

Height bushing (g)

[mm]

Weight[kg]

l

Internal arc up to 20 kA - 0.5 s

418 850[1] 1745 1042 142

Internal arc[5] up to 25 kA - 1 s

162

s


418 850 1745 - 135

Internal arc[5] up to 20 kA[6] - 1 s

143

s-pt


600 850 1745 - 175


185

p


480 1010 1745 525 220


230

[1] Cubicle with double cable: 930 mm. [5] The IAC category means that all the medium voltage cubicle compartments are protected against internal arcs. [6] Tests conducted with a current of 21 kA.

a

f

g

h

f

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Module Width

(a) [mm]

Depth (f) [mm]

Height (h)

[mm]

Height bushing (g)

[mm]

Weight[kg]

a(m)v


600[2] 850 1745 695 250


255

ra(m)v Internal arc up to 20 kA - 0.5 s

600 850 1800 745 250

a(m)v(3g) ra(m)v(3g)


600 850 1745 695 250


255

rc left[3] - 367 831 1745 - 42

rc right[3]

rb rb with

earthing


418 850[1] 1745 1042 138


158

m[3] - 1100

1160 1950 - 290

900 258

2lp


1316 1010[4] 1745 Feeder

1042

Protection

525

440


490

[1] Cubicle with double cable: 930 mm. [2] As an option, there is a 595 mm wide module of the A(M)V type cgm.3-v cubicle also available. Consult Ormazabal. [3] This model of cubicle does not have internal arc protection. [4] Feeder functional units with double cable: 1090 mm. [5] The IAC category means that all the MV cubicle compartments are protected against internal arcs. [6] Tests conducted with a current of 21 kA.





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2. Transport

2.1. Lifting methods

The cubicles must always be kept upright, directly on the ground or on a pallet depending on the type of handling involved. To handle cgm.3 assemblies with up to 4 functional units, one of the following methods should be used:

1. Using a forklift truck or hand-operated pallet truck[5].

2. Raising it using slings fixed to the lifting supports on the sides of the top of the cubicle. The angle of pull should be as vertical as possible (with an angle of more than 60º from the horizontal).

3. If it is not possible to use the aforementioned methods, rollers may be used underneath the cubicles. Another option is to slide the cubicles over rods (these same rods can be used to get over the trench).

[5] Position the rear of the cubicle facing the driver, to avoid damaging the front.

Figure 2.1: Lifting a cgm.3 modular cubicle using a forklift truck

Figure 2.2: Lifting a cgm.3 modular cubicle with slings

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4. To handle 5 functional unit cgm.3 assemblies (consisting of either coupled modules

or compact assemblies), use lifting systems (slings, lifting beam, etc.) with a pull angle greater than 65º and less than 115º in order to prevent possible damage to the cubicles during hoisting.

CAUTION

The use of lifting beams is required for cubicle assemblies with control boxes As the sole exception, slings may be used if all the cubicles of the assembly have identical height control boxes installed.

Figure 2.3: Lifting a cgm.3 assembly with 5 functional units

Figure 2.4: Lifting a cgm.3 assembly with a forklift truck





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2.2. Location of documentation and accessories during transport

During transport, the cubicle must be perfectly seated and fixed so that it cannot move about and possibly damage the equipment.

The corresponding documentation (General Instructions, electrical diagrams, etc.) is supplied with the cubicles, as well as a set of accessories located at the rear of the cubicles, as indicated in the figure below:

NOTE

The cubicle models with internal arc for 1 s have the accessories box located on the roof of the tank.

Depending on the medium voltage cubicle model, the accessory box contains some of the following items: Ormazabal's IG-136 General Instructions document Actuating lever Spring-charging lever Cubicle connecting kit:

- ormalink - Springs - Syntheso grease - Earthing flatbar

End plug kit: - Cubicle end assembly - Nylon thread - Plastic plugs - Side cover

Documentation and Accessory Box

Figure 2.5: Location of documentation and accessories during transport

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3. Storage If they need to be stored, Ormazabal's medium voltage cubicles must be placed on dry ground or, if necessary, on top of damp-proof insulating material, and always in its original packaging. After prolonged storage, clean all the insulating parts carefully before commissioning the equipment. The enclosure should be cleaned with a clean dry lint-free cloth. Storage must always be INDOOR, which has the following recommended conditions: ● The ambient air temperature shall not exceed 40 ºC and the average value, measured in a 24 hour period, shall not exceed 35 ºC. ● The ambient air temperature shall not drop below - 5 ºC. Cubicles area also available with storage temperature down to - 15 ºC and to - 40 ºC.

NOTE

In addition, cubicles are available up to class: «– 30 ºC interior (– 40 ºC storage)».

40 ºC max.

- 5 ºC min.

Figure 3.1: Conditions of medium voltage cubicle storage





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● The switchgear must be protected against direct solar radiation. ● The altitude shall not exceed 2000 m. ● The ambient air must not be significantly contaminated due to dust, smoke, corrosive and/or inflammable gases, vapour or salt. ● The switchgear must be protected against rain and the moisture conditions shall be as follows: - the average value of the relative humidity, measured in a 24 hour period, shall not exceed 95%. - the average value of the water vapour pressure, measured in a 24 hour period, shall not exceed 2.2 kPa. - the average value of the relative humidity, measured in a one month period, shall not exceed 90%. - the average value of the water vapour pressure, measured in a one month period, shall not exceed 1.8 kPa. ● During transportation, vibrations caused by external forces or due to seismic movements shall be insignificant. Any other conditions must be notified beforehand, since the equipment must be factory-adjusted to the atmospheric pressure. Otherwise, the needle may indicate an incorrect value (red scale), even though the value of the equipment internal pressure is correct. Otherwise, the manometer needle may indicate an incorrect value, even if the equipment internal pressure is correct.

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4. Installation

4.1. Unpacking the equipment

cgm.3 system cubicles come wrapped in protective plastic. On receiving the equipment, check that the goods supplied correspond to the order and associated documentation. The process for unpacking the equipment is as follows:

1. Using a blade, cutter or similar tool, cut the cellophane the cubicle is wrapped in[6].

2. Remove the cellophane.

3. Detach the white polystyrene corner pieces.

4. Unscrew the fixings between the base and the pallet.

5. Remove the pallet, handling the medium voltage cubicle as indicated in section 2.1.

6. Unpack the documentation and accessories box located at the bottom rear section or

on the roof of the cubicle, depending on the cubicle model.

7. Remove the self-adhesive protective plastic from the cable compartment cover.

8. Dispose of any waste in an environmentally-friendly manner.

It is advisable to make a visual inspection of the equipment to check whether it has suffered any damage in transit. If so, contact Ormazabal immediately.

CAUTION

The self-adhesive plastic must be removed from the cable compartment cover so that the equipment enclosure’s earth connection may have the proper electrical continuity.

[6] It is advisable to cut the cellophane at the rear of the cubicle or at the corner to avoid scratching the surface.





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4.2. Civil engineering works

The minimum distances to the walls and roof, and from the trench for the medium voltage cables are as follows:

The space required to extend the assembly with an additional cubicle is 250 mm plus the width of the new cubicle[7].

[7] Should a query arise, contact Ormazabal.

Minimum distances [mm]

Distances Side wall (a) 100 Ceiling (b) 600 Front clearance (c) 500(*)

Function Rear wall (d)

cgm.3-l/s 100 / 160(**)

cgm.3-p / 2lp 0

cgm.3-v circuit breaker cubicles 100 / 160(**)

cgm.3-m 0

cgm.3-rc/rb 100 / 160(**)

NOTE

The above-mentioned measurements have been obtained in accordance with the internal arc tests, which have been carried out in a compartment 2300 mm high, for gas-insulated modules, according to annex A of standard IEC 62271-200.

b

c d

a

Figure 4.1: Minimum installation distances

(*) The Spanish HV regulation (MIE-RAT 14) requires a minimum operating aisle space of 1000 mm (**) Diagrams combined with p and 2lp modules.

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4.3. Fastening to the floor

Before assembling the cubicles, the floor must be carefully levelled to prevent any deformation which may make it difficult to connect the cubicles to one another.

The cubicles can be fastened to the floor with or without a profile.

4.3.1. Floor fastening on a profile

If the floor of the transformer substation is not sufficiently uniform, it is advisable to install the medium voltage cubicle assembly on an auxiliary profile, to make it easier to connect them. This profile, which can be supplied to order, must be anchored to the floor using expansion screws. 4.3.2. Fastening to the floor by anchorage

If the floor of the transformer substation is even enough, it is advisable to install the medium voltage cubicle assembly directly anchored to the floor.

The sequence for anchoring the cubicles to the floor is as follows:

1. Operate the cubicle's switch to the earthing position[8].

NOTE

By default, the cubicles are supplied with the switch in earthing position.

[8] See section 5. Sequence of Operations of this General Instructions document.

Anchorage support

M10 x 25 bolt

65 x 65 x 4 profile

Figure 4.2: Fastening cubicles on profile





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2. Remove the cable compartment cover, using the central handle on the cover to pull it up and forward as indicated in the figure.

3. Anchor the first cubicle to the floor of the installation, using screws at the points prepared in its base. This will prevent vibrations or movements due to short-circuits, possible flooding of the transformer substation, etc. Take the following dimensions and figures into account.

Figure 4.4: Anchoring points in cgm.3 cubicles

(*) Partition between anchors for 1100 mm wide cubicles; partition of 830 mm for 900 mm wide cubicles.

Anchorage dimensions [mm]

Module a b c d e f

g Internal Arc 20 kA – 0.5 s

Internal Arc 20 kA – 1 s

Internal Arc 25 kA – 1 s

l 50 368 245 - - 540 710 710 -

s 50 368 - - - 540 710 - -

s-pt 50 550 - - - 540 710 - -

p 50 430 60 - - 540 710 710 -

a(m)v 50 550 325 - - 540 710 - -

ra(m)v 50 550 325 - - 540 - - -

a(m)v (3G) ra(m)v (3G) 50 550 325 - - 540 710 710 -

rb 50 368 245 - - 540 710 710 -

rb with earthing 50 368 245 - - 540 710 710 -

m 35 1030(*) 235 - - 1030 1030 - -

rc 50 317 435 - - 540 - - rc left 209

rc right 158

2lp 50 368 245 430 418 540 710 710- 60

Figure 4.3: Removing the cable compartment cover

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Figure 4.5: Anchorage points in cubicles cgm.3 -l, -s, -s-pt, -p,-ra(m)v,-a(m)v -a(m)v (3g), -ra(m)v (3g), -rb, -rb-pt

Figure 4.6: Anchorage points in cgm.3 -l, -s, -s-pt, -p, -ra(m)v, -a(m)v, -a(m)v(3g), -ra(m)v (3g), -rb,-rb-pt double

cable cubicles

Figure 4.7: Anchorage points in cgm.3-rc cubicles

Figure 4.8: Anchorage points in cgm.3-m cubicles

b

c

fa

93a

f

b

c

g





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de b

c

ga

f

de b

f

c

ga

Once properly levelled, the final installation of the medium voltage cubicle assembly only requires electrical and mechanical coupling between the different cubicles, and then anchorage to the floor, which must be carried out as indicated above.

Figure 4.9: Anchorage points in cgm.3-2lp cubicles and feedthrough

Figure 4.10: Anchorage points in cgm.3-2lp double cable cubicles and feedthrough

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4.4. Connecting the cubicles

The joining of cubicles must be carried out as indicated in Ormazabal's Spares and Accessories document RA-163, which is supplied with the materials kit used for connecting cubicles. 4.5. Earthing the equipment

For connecting the general earthing collector, follow the procedures listed below: 1. Screw the earth connection flatbar between each 2 medium voltage cubicles, at their

back side, using 2 M8 x 20 hexagonal screws. Apply a tightening torque of 15 Nm. Tools: 13 mm spanner Torque wrench with 13 mm adapter

2. Connect the end earthing flatbar, marked with the symbol , to the transformer

substation's general earth connection.

CAUTION

Earthing the equipment is an essential condition for safety.

Cubicle 2 Cubicle 3Cubicle 1

Figure 4.11: Earthing the equipment





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4.6. Cable connection

The medium voltage incoming and outgoing feeders are linked to the transformer or other cubicles via cables. These cables and the corresponding bushings on the cgm.3 system cubicles can be connected with simple (plug-in) or reinforced (screw-in) connecting points, either IEC type or IEEE-386 compliant.

The cable compartment contains the connecting cable bushings for the incoming and outgoing lines, as well as for the outputs to the transformer.

The size of the cable compartment allows the use of both insulated and partially insulated terminals[9].

The recommended terminations are described below:

Cable type

Protec-tion

Connector Manufac-

turer

Rated current

[A]:

36 kV 40.5 kV

Type Cross-section [mm2]

Type Cross-section [mm2]

Dry insula-

tion

Scree-ned

Elbow EUROMOLD(*)

400 M400LR 35-240 - -

630 M400TB 35-240 P400TB 35-240

630 M440TB 185-630 P440TB 185-630

(*) Connectors recommended by Ormazabal for cgm.3 system cubicles.

NOTE

In addition to the above list they are also valid for CENELEC terminations.

For other terminations, please consult Ormazabal.

4.7. Assembly and connection of metering transformers

The voltage and current metering transformers are mounted on fastening rails installed in the Ormazabal cgm.3-m modular metering cubicle.

The layout and connection of these transformers (maximum three voltage transformers and three current transformers per metering cubicle) will be according to the layout requested and the type of transformer to be installed.

NOTE

For further information concerning the assembly and connection of the metering transformers in the Ormazabal cgm.3-m metering cubicles, please refer to the MO-082 operation manual “Assembly of transformers and busbars in metering cubicles”.

[9] It is advisable to use fully insulated connectors for voltages of 36 kV, according to HD 629.

CAUTION

Never touch live connectors, not even screened connectors. Screening does not constitute a protection against direct contact.

When the equipment is in service and a reserve cubicle is left with voltage in the upper busbar and without cables in the lower bushings, insulating plugs (EUROMOLD) must be placed in the bushings, or else the earthing switch must be placed in the earthing position, and locked in that position with a padlock.

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5. Recommended sequence of operations

CAUTION

Before carrying out any operation when the cubicle is energised, we recommend checking the SF6 gas pressure, using the manometer.

5.1. Checking voltage presence and phase balance

Ormazabal's ekor.spc[10] phase comparator should be used for checking that the medium voltage cables are correctly connected to the feeder cubicles. Firstly, connect the red cables of the ekor.spc unit to the corresponding phase test points on the voltage indication units[11] units, and the black cable to the earth test point. This operation should be repeated for all the phases: L1, L2 and L3

[10] Optionally, other comparison devices which comply with the IEC 61958 standard may be used. [11] See section 1.1.1. Voltage Indication of this General Instructions document.

Comparison of balanced phases

Comparison of unbalanced phases

There is NO indication on the comparator YES, there is indication on the comparator

Figure 5.1: Connecting the ekor.spc unit





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5.2. Operating levers

CAUTION

For safety reasons, maintenance operations performed directly on the driving mechanism must be performed WITHOUT any actuating lever inserted.

The cgm.3 system cubicles are operated with 3 different types of lever, depending on the type of driving mechanism used.

5.2.1. Driving mechanism lever B, A(M)V, A(M)V(3G) and RA(M)V (3G)

This is an antireflex lever for performing closing (I) and opening (O) operations in the switch/disconnector respectively, without exceeding the medium voltage cubicle's manoeuvring limits. This type of lever prevents the opposite operation being carried out immediately after opening or closing the switch.

Figure 5.2: Driving mechanism lever

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5.2.2. Driving mechanism lever RA(M)V

It is used for operating the RA(M)V type cgm.3-v circuit breaker cubicle. It is an antireflex lever with two different heads for performing operations on the disconnector-earthing switch located in the cubicle. Using the "black" head, it goes from closed position to open position, or vice versa.

Using the "red" head, it goes from open position to earthing position, or vice versa. 5.2.3. Spring charging lever for circuit breaker driving mechanisms

The spring charging lever is used to manually charge the springs in the circuit breaker driving mechanism.

1 cgm.3-v A(M)V and RA(M)V 2 cgm.3-v AV(3G) and RAV(3G)

Figure 5.5: Types of spring charging lever

Red Black

Figure 5.3: Operation of disconnector Figure 5.4: Operation of earthing switch

2 1





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5.3. cgm.3-l cubicle

5.3.1. Opening operation from the earthing position

1. Move the actuation shaft access handle in the yellow zone to its lower position.

2. Insert the lever in the earthing switch actuation shaft and turn anticlockwise.

3. Remove the lever. The handle returns to its original position.

4. Verify that the cubicle is in open position.

5.3.2. Switch closing operation from the open position

1. Move the actuation shaft access handle in the grey zone to its lower position.

2. Insert the lever in the switch-disconnector actuation shaft and turn clockwise.


4. Verify that the cubicle is in closed position.

Figure 5.6: Opening operation from earthing position in cgm.3-l

Figure 5.7: Closing operation from open position in cgm.3-l

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5.3.3. Opening operation from the switch - disconnector closed position


2. Insert the lever in the switch-disconnector actuation shaft and turn anticlockwise.



5.3.4. Earthing operation from the open position


2. Insert the lever in the earthing switch actuation shaft and turn clockwise.


4. Verify that the cubicle is in earthing position.

Figure 5.8: Opening operation from switch closed position in cgm.3-l

Figure 5.9: Earthing from open position cgm.3-l





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5.3.5. Cable test

To test the cables in cgm.3-l feeder cubicles, B/BM driving mechanisms with this feature must be ordered.

These driving mechanisms allow the operation of going from earthing switch closed to switch-disconnector open, even when the cable compartment cover is open. Thus, the switch-disconnector cannot be changed to the closed position until this cover has been put back. 5.4. cgm.3-s cubicle

5.4.1. Switch - disconnector closing operation

1. Move the actuation shaft access handle to its lower position.

2. Insert the lever in the actuation shaft and turn clockwise.



5.4.2. Switch - disconnector opening operation


2. Insert the lever in the actuation shaft and turn anticlockwise.



Figure 5.10: Closing the switch in cgm.3-s

Figure 5.11: Opening the switch in cgm.3-s

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5.5. cgm.3-s-ptd cubicle






5.5.2. Closing operation from the open position





Figure 5.12: Opening operation from earthing position in cgm.3-s-ptd

Figure 5.13: Closing operation from open position in cgm.3-s-ptd





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Figure 5.14: Opening operation from switch position closed in cgm.3-s-ptd

Figure 5.15: Earthing from open position in cgm.3-s-ptd

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5.6. cgm.3-s-pti cubicle











Figure 5.16: Opening operation from earthing position in cgm.3-s-pti

Figure 5.17: Closing operation from open position in cgm.3-s-pti





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2. Insert the lever in the switch actuation shaft and turn anticlockwise.








Figure 5.18: Opening operation from switch closed position in cgm.3-s-pti

Figure 5.19: Earthing from open position in cgm.3-s-pti

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5.7. cgm.3-p cubicle






5.7.2. Switch - disconnector closing operation from the open position (using

the BR-A driving mechanism)


2. Insert the lever in the switch-disconnector actuation shaft and turn clockwise. In the same turn, the switch-disconnector is closed and the retaining springs are charged.



Figure 5.20: Opening operation from earthing position in cgm.3-p

Figure 5.21: Closing operation from open position in cgm.3-p





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1. The switch can be opened manually, using the push-button on the front of the cubicle, an opening coil release, or due to action by the fuses.

2. Verify that the cubicle is in open position. 5.7.4. Earthing operation from the open position





Figure 5.22: Opening operation from switch closed position in cgm.3-p

Figure 5.23: Earthing operation from Open Position in cgm.3-p

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5.7.5. Selection of recommended fuses

The fuses recommended for use in the fuse protection functional unit are defined according to tests carried out by the manufacturers. The following table shows the recommended fuse ratings according to the Ur/Ptransf. ratio:

Ur [kV] Transformer rated power [kVA]

Line Cubicle 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000

25 36 6.3 10 16 16 16 20 20 31.5 31.5 40 40 50 63 80*

30 36 6.3 6.3 10 16 16 16 20 20 31.5 31.5 40 40 63 63

35/36 40,5 6.3 6.3 10 16 16 16 20 20 31.5 31.5 40 40 50 63

Remarks: General operating conditions: Without overload, and temperature < 40 ºC. The values marked with an (*) correspond to SSK-type fuses. Maximum permitted power loss for a fuse: < 75 W.

Recommended fuses: SIBA 20/36 kV, type HH, medium type striker, for functional units up to 36 kV and SIBA HHD TB 40.5 kV, medium type striker, for functional units up to 40.5 kV (conforming to IEC 60282-1). For other brands of fuses and for protection with overload, consult Ormazabal.

Temperature-rise testing of the fuse switch assembly, according to IEC 62271-105. Transfer current according to IEC 62271-105:

The transfer currents have been tested according to the following parameters:

Ur Fuse [kV]

Ur Cubicle [kV]

Ir Fuse [A]

Itransfer [A]

36 36 SSK type

80 820

40.5 40.5 Type HH

63 700





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Figure 5.26: Opening the fuse holder

5.7.6. Fuse replacement sequence

If any of the 3 fuses blows, the switch-disconnector (a) will open automatically; this is indicated by the red position indicator (b) located on the front of the driving mechanism compartment.

NOTE

As an option, an auxiliary blown fuse indication for any of the 3 fuses is also available. More precisely, it consists of a normally open contact plus a normally closed contact (1 NO + 1 NC) for auxiliary circuits such as an illuminated indication showing that any of the fuses has blown.

In order to replace the fuses, the following procedures must be followed:

1. Close the earthing switch (c).

2. Remove the cable and fuse compartment access cover by pulling the handle (d) up.

3. Pull up the handle on the fuse holder cover until the locking clip is unhooked and then pull sharply outwards to open the fuse holder.

(a)

(b)

Figure 5.24: Fuse tripping indication in cgm.3-p

(d)

(c)

Figure 5.25: Opening the cable compartment cover

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4. Remove the fuse holder carriage by pulling it outward.

5. Replace the blown fuse, taking special care with the striker as shown in the figure.

CAUTION

Make sure that the end of the new fuse with the fuse striker faces the carriage insulator end. It is advisable to change all three fuses, even if only one of them appears to be damaged.

6. Insert the fuse holder carriage in its compartment by pulling it inward.

CAUTION

Before inserting the fuse holder carriage in the fuse-protection cubicle, ensure that both the carriage as well as the inside of the fuse holder are properly cleaned.

Figure 5.27: Removing the fuse holder carriage

Fuse striker

Figure 5.28: Changing the médium voltage fuse

Figure 5.29: Inserting the fuse holder carriage





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7. Reset the fuse striker by pressing downward with the thumb.

8. Close the cover and check that all the strikers have been reset.

9. Place the fuse and cable compartment access cover (a) by pushing it downward and ensuring it is interlocked on the cgm.3-p cubicle, taking into account that the fuse status indicator (b) is green.

10. Commission the cubicle, following the instructions in section 5.7 of this document, which correspond to the opening operation in the cgm.3-p cubicle.

Figure 5.30: Resetting the striker in the fuse holder cover

Figure 5.31: Closing the fuse holder

(b)

(a)

Figure 5.32: Closing the cable compartment cover in cgm.3-p

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5.8. cgm.3-rb cubicle with earthing











Figure 5.33: Opening operation from earthing position in cgm.3-rb with earthing

Figure 5.34: Earthing from open position in cgm.3-rb with earthing





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5.9. cgm.3-v cubicle with RA(M)V driving mechanism


In order to carry out the opening operation from the earthing position, proceed in accordance with the following sequence:

1. Check the tension of the spring (a) and if necessary, tighten it (see section 5.2.3 “Spring charging lever for circuit breaker driving mechanisms”).

2. Open the circuit breaker by pressing the “0” (b) button and check the status indicator.

3. Turn locking piece (c) and slide the interlock down. Turn the locking piece again, to lock the interlock.

4. Insert the lever in the disconnector actuation shaft, on the red side, and turn anticlockwise.

5. Remove the lever.

6. Unlock the locking piece (c).


Red

(c)

(a)

(b)

Figure 5.35: Opening sequence for RA(M)V driving mechanism

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5.9.2. Circuit breaker closing operation from the open position

In order to carry out the closing operation in the circuit breaker from the open position, proceed in accordance with the following sequence:

1. Turn locking piece (a) and slide the interlock down. Turn the locking piece again, to lock the interlock.

2. Insert the lever in the disconnector actuation shaft, on the black side, and turn anticlockwise.


4. Turn locking piece (a) to override the interlock. The interlock plate will rise.

5. Tightening the springs if not using the motorised driving mechanism (see section 5.2.3 “Spring charging lever for circuit breaker driving mechanisms”).

6. Connect the circuit breaker by pressing the button «I» (b) located on the front pushbutton.


Black

(a)

(b)

Figure 5.36: Closing sequence for RA(M)V driving mechanism





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5.9.3. Opening operation from the circuit breaker closed position

In order to carry out the opening operation in the circuit breaker from the closed position, proceed in accordance with the following sequence:

1. Check the tension of the spring (a) and if necessary, tighten it (see section 5.2.3 “Spring charging lever for circuit breaker driving mechanisms”).

2. Open the circuit breaker by pressing the “0” (b) button and check the status indicator.

3. Turn locking piece (c) and slide it down. Turn it again, to lock the interlock.

4. Insert the lever in the disconnector actuation shaft, on the black side, and turn clockwise.


6. Turn locking piece (c) to cancel the interlock, and the interlock plate will rise.


Black

(c)

(a)

(b)

Figure 5.37: Opening sequence for RA(M)V driving mechanism

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5.9.4. Earthing preparing operation from the open position

1. Turn locking piece (a) and slide it down. Turn it again, to lock the interlock.

2. Insert the lever in the disconnector actuation shaft, on the red side, and turn clockwise.


4. Turn locking piece (a) again to override the interlock. The interlock plate will rise.

5.9.5. Earthing operation from the prepared for earthing position

1. Tightening the springs if not using the motorised driving mechanism (see section 5.2.3 “Spring charging lever for circuit breaker driving mechanisms”).

2. Close the circuit breaker by pressing button “I”, and check the status indicator. In this position, it is possible to unlock and remove the cable access cover.

NOTE

ALWAYS lock in this position, with either padlock or key, before carrying out any work with the cubicle powered down.

Red

(a)

Figure 5.38: Earthing sequence for RA(M)V driving mechanism





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5.10. cgm.3-v cubicle with A(M)V driving mechanism


Initial conditions: Earthing switch closed and circuit breaker closed.

1. Move the access handle in the yellow zone to its lower position.

2. Insert the lever in the earthing actuation shaft and turn anticlockwise.


4. Open the circuit breaker by pressing the “0” button on the front push-button and check the status indicator.


Figure 5.39: Disconnection from earthing position in A(M)V

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Initial conditions: Earthing switch open, circuit breaker open and springs charged.

1. Move the access handle in the grey zone to its lower position.



4. Close the circuit breaker by pressing button “I”, and check the status indicator.

Manual driving mechanism (AV): Charge springs, operating the charge lever (see section 5.2.3 “Spring charging lever for circuit breaker driving mechanisms”), until the spring is shown as tight. Once the spring has been tightened, close the switch by pressing the close button; then check the status indicator and whether voltage is present in the ekor.vpis or ekor.ivds unit. Motorised driving mechanism (AMV): Close the switch by pressing the closing button; then check the status indicator and whether voltage is present in the ekor.vpis or ekor.ivds unit.

Figure 5.40: Connection from open position in A(M)V





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5.10.3. Opening operation from the closed position

Initial conditions: Circuit breaker closed, earthing switch open and springs charged.

1. Open the circuit breaker by pressing the “0” opening button on the front push-button and check the status indicator.

2. Check that no voltage is present using the ekor.vpis or ekor.ivds unit.





Figure 5.41: Disconnection from closed position in A(M)V

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Initial conditions: Circuit breaker open and earthing switch open with springs charged.

1. Close the circuit breaker by pressing the “I” close button and check the status indicator.

2. Check that no voltage is present using the ekor.vpis or ekor.ivds unit.

3. Move the access handle from the yellow zone to its lower position.




NOTE

When undertaking work with the cubicle powered down, it is mandatory to interlock the earthing position with either a padlock or a safety lock.

Figure 5.42: Earthing from open position in A(M)V





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5.11. cgm.3-v cubicle with driving mechanism AV (3G) and RAV (3G)


Initial conditions: Earthing switch closed and circuit breaker closed.


2. Insert the lever in the earthing actuation shaft and turn anticlockwise.

3. Remove the lever. The handle returns to its original position. Figure 5.43: Opening from earth for AV (3G) and RAV (3G) mechanisms

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Initial conditions: Earthing switch open, circuit breaker closed and springs charged.

1. Open the circuit breaker by pressing the “0” button on the front push-button and check the status indicator.


3. Insert the lever in the disconnector actuation shaft and turn clockwise.


5. Close the circuit breaker by pressing button “I”, and check the status indicator.

Manual driving mechanism (AV (3G)): Charge springs, operating the charge lever (see section 5.2.3 “Spring charging lever for circuit breaker driving mechanisms”), until the spring is shown as tight. Once the spring has been tightened, close the switch by pressing the close button; then check the status indicator and whether voltage is present in the ekor.vpis or ekor.ivds unit. Motorised driving mechanism (AMV (3G)): Close the switch by pressing the closing button; then check the status indicator and whether voltage is present in the ekor.vpis or ekor.ivds unit.

Figure 5.44: Connection from open position for AV (3G) and RAV (3G) mechanisms





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5.11.3. Opening operation from the closed position

Initial conditions: Circuit breaker closed, earthing switch open and springs charged.

1. Open the circuit breaker by pressing the “0” opening button on the front push-button and check the status indicator.

2. Check that no voltage is present using the ekor.vpis unit.


4. Insert the lever in the disconnector actuation shaft and turn anticlockwise.


Figure 5.45: Disconnection from closed position for AV (3G) and RAV (3G) mechanisms

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Initial conditions: Circuit breaker open and earthing switch open with springs charged.

1. Close the circuit breaker by pressing the “I” close button and check the status indicator.

2. Check that no voltage is present using the ekor.vpis unit.




NOTE

When undertaking work with the cubicle powered down, it is mandatory to interlock the earthing position with either a padlock or a safety lock.

Figure 5.46: Earthing from open position for AV (3G) and RAV (3G) mechanisms





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6. Interlocks

cgm.3 switchgear incorporates safety locks required to ensure the following conditions:

a) The switch - disconnector and the earthing switch cannot both be in closed position at the same time.

b) The cubicles have a safety interlock which prevents access to the medium voltage cable compartment while the earthing switch is not closed. In normal operation, this earthing switch cannot be opened if the cable compartment access cover is not in place.

6.1.1. Locking with a padlock

The cubicles are supplied with an independent padlock interlock for both the switch-disconnector, in its closed or open positions, and the earthing switch, in its closed or open positions. Padlocks with ring diameters of between 8 and 11 mm can be used. 6.1.2. Locking with a key lock (optional)

Both the switch-disconnector and the earthing switches can have an optional locking interlock device, which allows its operation to be blocked in both the open and closed positions.

Figure 6.2: Interlocking in cgm.3-l cubicle using keys

Figure 6.2: Interlocking in cgm.3-l cubicle using padlock and keys

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7. Maintenance

CAUTION

For safety reasons, maintenance operations performed directly on the driving mechanism must be performed WITHOUT any actuating lever inserted.

The live parts of the main circuit and breaking/connection equipment do not require inspection or maintenance, as they are completely insulated in SF6, and therefore free from any influence from the external environment. The driving mechanisms have also satisfactorily passed the endurance tests (class M1/M2 for the switch-disconnector, according to IEC 62271-103 and class M0 for the earthing switch, according to IEC 62271-102). These mechanisms must be inspected when used under extreme conditions (dust, salt, pollution). It is advisable to carry out at least one operation during the inspections. Components which have been painted to guarantee their performance against rust must be repaired to prevent possible corrosive effects in the event of scratches, knocks or similar,

CAUTION

In facilities that operate under severe climate conditions with a greater demand than those specified as Normal Service Conditions (IEC 62271-1), the necessary regular preventive maintenance tasks must be carried out. Consult Ormazabal in accordance with the environmental conditions of the facility.





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7.1. Voltage presence indicator test

To test the ekor.vpis or ekor.ivds voltage presence indicator, connect it to a 230 Vac power supply. To do this, disconnect the ekor.vpis or ekor.ivds unit from the cubicle, and, using 4 mm terminals, apply the voltage between the test point for the phase to be checked and the earth test point.

If a flashing signal is observed, the device is working correctly. In order to properly test the ekor.vpis or ekor.ivds, this check should be carried out for all three phases.

CAUTION

The voltage presence indication is not sufficient to ensure that the installation has been disconnected from the electricity supply. Before accessing the cable compartments, it is necessary to confirm that the line is connected to earth.

The ekor.vpis or ekor.ivds voltage indicator can be replaced if required. To do so, loosen until removing the two screws on the top right and bottom left of the indicator using a medium size Philips screwdriver. The ekor.vpis or ekor.ivds unit can then be disconnected from the base without needing to power down the line.

Tool: Medium size Phillips screwdriver.

NOTE

No polarity is defined for 230 Vac voltage, so either the phase or neutral conductor can be connected.

Figure 7.1: ekor.vpis device

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7.2. Acoustic earthing prevention alarm test

To test that the ekor.sas acoustic alarm is working correctly, connect the ekor.vpis voltage presence indicator to 230 Vac by means of 4 mm terminals, which are connected to the indicator between the earth test point and the test point for the L1 phase. The auxiliary power supply is maintained for 5 minutes. As the handle is moved to insert the lever in the earthing shaft in order to carry out the operation, the alarm starts to sound and continues to sound for at least 30 seconds. It stops when the handle is released.

The ekor.sas alarm can be replaced if necessary, since it is joined to the associated elements with two friction-fit PCB connectors:

1. 3-pin connector, polarised for the voltage presence indicator.

2. 2-pin connector for the lever micro-switch.

The process is as follows:

Remove the driving mechanism cover.

1. Unscrew the ekor.sas unit to remove it.

2. Undo both connectors and replace the damaged unit; then connect it to the lever microswitch (2-pin connector) and the voltage indicator (polarised 3-pin connector).

ekor.sas

Figure 7.2: ekor.sas device





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7.2.1.1. Connecting the ekor.sas unit:

1 Connection to the lever microswitch in the earthing shaft

2 Connection to the voltage presence indicator

1

2

Figure 7.3: Connecting the ekor.sas unit

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7.3. Specific maintenance for the cgm.3-v cubicle

The driving mechanisms and other elements outside the gas tank may require preventive maintenance; the frequency of this maintenance depends on the existing environmental conditions (harsh environments, dust, extreme temperatures, etc.), and should be established based on the installer's experience and their responsibility. The maintenance should take place every 5 years or 2000 operating cycles, unless, based on the conditions of use, the user, together with Ormazabal, consider otherwise.

NOTE

Depending on the type of driving mechanism, the recommended preventive maintenance procedure is described in the following Ormazabal operating manuals:

- cgm.3-v RA(M)V-type: MO-041

- cgm.3-v A(M)V-type: MO-073

- cgm.3-v A(M)V (3G) and RA(M)V (3G) type: MO-079





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8. Additional information

8.1. Spares and accessories

Although all the components of the cgm.3 cubicles have passed both routine tests during the manufacturing process and type tests prior to approval, some of them can be changed, replaced and even installed on site.

If any of the stated auxiliary components need to be changed, the corresponding spare parts kit must be ordered, and the instructions given in the corresponding documentation must be followed.

cgm.3 system functional units have the following options for spares and accessories:

Driving mechanism l p s s-pt

v

m rb rc 2lp RA(M)V

A(M)VA(M)V(3G)

RA(M)V(3G) B X - X X - X - X - X BM X - X X - - - - - X Motor assembly B X - X X - - - - - X BR-A - X - - - - - - - X BR-AM X X - - - - - - - X Set of auxiliary contacts 2 NO + 2 NC switch-disconnector 1 NO + 1 NC earth connection

X - X X - X - X - X

Circuit breaker motorisation - - - - X X - - - -

4 NO + 4 NC circuit breaker - - - - X X - - - -

Opening coil release X X - - X X - - - X

Opening coil release + 1 NOC switch + micro-disconnection

X X - - - - - - - X

Bistable + 1 NOC switch + micro-disconnection

X X - - - - - - - X

Actuating lever(*) X X X X X X - X - X

Fuse holder carriage - X - - - - - - - X

Protection, metering and control

l p s s-pt

v

m rb rc 2lp RA(M)V

A(M)VA(M)V(3G)

RA(M)V(3G) ekor.rpg - - - - X X - - - - ekor.rpt - X - - - - - - - X ekor.rci X - - - - - - - - X ekor.vpis (**) X X X X X X - X X X

ekor.ivds (**) X X X X X X - X X X

ekor.spc X X X X X X - X X X

ekor.sas X X X X X X - X - X

ekor.rtk X X - - X X - - - X (*) All levers are of the anti-reflex type, making it impossible to perform an opening operation after closing. (**) Components which can only be replaced by specifically qualified personnel.

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Metal enclosure l p s s-pt

v

m rb rc 2lp RA(M)V

A(M)V A(M)V(3G)

RA(M)V(3G) Driving mechanism compartment cover

X X X X X X - X - X

Cable compartment cover X X X X X X - X X X

Cable compartment cover, special depth

X - - - - - - X - X

Connectivity l p s s-pt

v

m rb rc 2lp RA(M)V

A(M)V A(M)V(3G)

RA(M)V(3G)

Connecting set X X X X X X - X - X

End assembly X X - - X X - X - X

Locks and interlocks l p s s-pt

v

m rb rc 2lp RA(M)V

A(M)V A(M)V(3G)

RA(M)V(3G) Earth connection OPEN X X - X X X - X - X

Earth connection CLOSED X X - X X X - X - X

Switch OPEN X - X X X X - - - X

Switch CLOSED X X X - - - - - X*

Earth connection CLOSED + OPEN

X X - X - X - X - X

Opening the cable access cover

- - - - - - X - X -

Others l p s s-pt

v

m rb rc 2lp RA(M)V

A(M)V A(M)V(3G)

RA(M)V(3G) Control box X X X X X X X X - X

Auxiliary profiles for anchorage to the floor

X X X X X X X X X X

Lateral incoming cable box X X X X X X - X - X

(*) Only in feeder functional units





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8.2. Environmental information

cgm.3 cubicles are defined as a sealed, pressurised system, according to IEC 62271-1 , which contains sulphur hexafluoride (SF6)

[12].

SF6 is included in the Kyoto Protocol list of greenhouse gases. SF6 has a GWP (Global Warming Potential) of 22 200 units. (TAR, IPCC 2001)

At the end of the product's life, the SF6 contained in it must be recovered for processing and recycling, to prevent it being released into the atmosphere. Extracting and handling of SF6 must be carried out by qualified personnel, using a sealed bored system.

For the usage and handling of the SF6, the indications listed in IEC 62271-303 must be followed.

The management and treatment of the rest of materials must be carried out in accordance with the country’s current legislation.

[12] This information is given on a label on the equipment itself.

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