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IG-308-EN version 01; 03/06/2022

Maintenance

General instructions

cgm

.3-huv system: Fully gas-insulated

medium-voltage switchgear

7. Maintenance

For safety reasons, maintenance operations performed

directly on the driving mechanism must be performed

WITHOUT any actuating levers inserted.

The live parts of the main circuit and switching equipment

do not require inspection or maintenance, as they are

completely insulated in SF

, and therefore free from any

influence from the external environment.

The operating mechanism for the

cgm

.3-huv system

cubicles' driving units does not require lubrication for

correct operation throughout its estimated lifetime,

according to the service conditions specified in IEC 62271-1.

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 manufactured from galvanised sheet steel

have been painted to ensure their resistance to corrosion.

Any scratches, dents or similar on them must be repaired to

prevent corrosion.

Facilities which operate under severe climate

conditions, in excess of those defined as normal

service conditions (IEC 62271-1), must carry out the

regular preventive maintenance tasks required. Check

with

Ormazabal

for the environmental conditions of

the facility.

7.1. Voltage presence indicating relay test

To test the

ekor

.vpis or

ekor

.ivds voltage presence

indicating relay, connect it to a 230 V

power supply. To

do this, disconnect the

ekor

.vpis or

ekor

.ivds device from

the cubicle, and, using 4 mm cable connectors, apply the

voltage between the test point for the phase to be checked

and the earth test point.

No polarity is defined for 230 V

, so either the phase or

neutral conductor can be connected.

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 in the three phases.

Voltage presence indication is not sufficient in itself to

ensure that the facility has been disconnected from

the electricity supply. It is necessary to confirm that

the feeder is connected to earth before accessing the

cable compartments.

The

ekor

.vpis or

ekor

.ivds voltage indicator can be replaced

if necessary. To do so, loosen to release the two screws on

the top right and bottom left of the indicating relay using a

medium-size Phillips screwdriver. The

ekor

.vpis or

ekor

.ivds

unit can then be disconnected from base without needing

to power down the feeder.

Figure 7.1.

Connection mode

ekor

.vpis

ekor

.ivds

Содержание velatia cgm.3 system

Страница 1: ...LIB cgm 3 huv system Fully gas insulated medium voltage switchgear General instructions IG 308 EN version 01 03 06 2022 ...

Страница 2: ...lectrical 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 1 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 wh...

Страница 3: ...ing relay 32 5 3 Phase concordance check 33 5 4 Feeder function 34 5 4 1 Mimic diagram 34 5 4 2 Actuating levers 34 5 4 3 Opening operation from earthing position 35 5 4 4 Switch closing operation from isolating position 36 5 4 5 Opening operation from closed position 37 5 4 6 Earthing operation from isolating position 38 5 4 7 Cable test 39 5 5 Circuit breaker function with AV RAV driving mechani...

Страница 4: ...ma Metering and auxiliary services Table 1 1 Unifunctional switchgear Multifunctional switchgear Functions lv 1 feeder function and 1 circuit breaker function rbv 1 rise function in busbars and 1 circuit breaker function Table 1 2 Multifunctional switchgear 1 2 Standards applied Standard Description IEC 62271 1 Common specifications for high voltage switchgear standards IEC 62271 100 High voltage ...

Страница 5: ...operation area 2 2 Operations area YELLOW earthing switch GREY switch disconnector 2 3 Earthing switch 2 4 ekor vpis ekor ivds live voltage detector 3 Base 3 1 Cable compartment access cover 3 2 Medium voltage cable fixing bracket 3 3 Gas relief compartment Representation with gas relief there is also the option of gas output to trench 3 4 Front cable connection bushings 4 Generator incoming cable...

Страница 6: ...is displayed on the cover of this compartment The mimic diagram includes all the position indicating relays for the driving elements The cgm 3 huv system has in accordance with the functional unit the following types of driving mechanism B Tilting functional units l rc with earthing via selector switch and rb with earthing via selector switch BM Motorised tilting l functional units AV Circuit brea...

Страница 7: ...rester reduced with space for the corresponding incoming power cables Cable ties for the power cables Earthing bars As an option Two symmetric cable connectors or symmetric cable connector plus symmetric surge arrester Figure 1 3 Cable compartment Gas relief compartment Ormazabal s cgm 3 huv system is designed and constructed to withstand at least the thermal and dynamic effects of an arc of 25 kA...

Страница 8: ...withstand voltage kV fr Equipment rated frequency Hz Ir Equipment rated current A Instructions Manual General Instructions Manual IG for the system Class Switch class according to IEC 62271 103 and circuit breaker class according to IEC 62271 100 Ik Ip Short time withstand current short time withstand peak value tk Short time withstand current time Pre Gas pressure inside the gas tank MPa Pme Mini...

Страница 9: ...ion level kV Power frequency rated withstand voltage 1 min 70 80 95 118 Lightning impulse rated withstand voltage 170 195 185 215 Internal arc classification according to IEC 62271 200 IAC AF AFL 20 25 kA 1 s 20 25 kA 1 s IAC AFLR 20 25 kA 1 s 20 25 kA 1 s IP rating gas tank IP X8 IP rating external enclosure IP 2XD Standard unit colour RAL grey 7035 blue 5005 Category of loss of service continuit...

Страница 10: ...5 603 135 5 145 Downwards through cable trench v 595 860 1305 256 0 235 rc 378 5 860 1305 845 5 133 35 ma 595 1152 1800 845 5 453 135 rbv 595 860 2050 487 110 305 lv 595 860 2050 487 110 325 l 418 860 1305 603 135 5 145 Upwards through relief duct chimney rc 378 5 1152 1305 845 5 133 45 ma 595 1152 1800 845 5 453 135 rbv 595 1152 2050 487 110 325 lv 595 1152 2050 487 110 345 In the generator incom...

Страница 11: ...mean vapour pressure measured over a 1 month period 1 8 kPa Maximum height above sea level 2000 m Solar radiation Negligible Ambient air pollution dust smoke corrosive and or flammable gases vapours or salt Insignificant Vibrations caused by causes external to the switchgear or by seismic movements Insignificant b Storage 40 C Table 1 8 Cubicle operating conditions The specifications refer to the ...

Страница 12: ...Important During transport the switchgear must be perfectly seated and fixed so that it cannot move about and possibly damage the equipment 2 1 Lifting equipment The switchgear must always be kept upright either directly on the floor or on a pallet depending on the type of handling involved Handling should use one of the following methods 1 Using a forklift truck or pallet truck 3 Figure 2 1 Lifti...

Страница 13: ...r cubicle with chains Figure 2 3 Lifting a cgm 3 huv lv compact cubicle with chains 3 If it is not possible to use the aforementioned methods rollersmaybeusedunderneaththeswitchgear Another option is to slide the cubicles over rods these same rods can be used to help get over the cable trench Once the corresponding operations have been completed remove the two lifting angles from the cubicle unscr...

Страница 14: ...ltitude both in transport and in storage must not exceed 2000 m 5 The environmental air must not have any significant contamination from dust smoke corrosive and or inflammable gases vapours or salt 6 The switchgear must be protected from the rain and the humidity conditions must be as follows a the average relative humidity value measured over a period of 24 hours must not exceed 95 b the average...

Страница 15: ... 1 Use a blade cutter or similar tool to cut the cellophane the cubicle is wrapped in 4 2 Completely 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 cubicle as indicated in section 2 1 6 Unpack the accessory box located at the rear or on top of the cubicle 7 Remove the self adhesive protective...

Страница 16: ... below Depending on the cubicle model the accessory box contains some of the following items Ormazabal General Instructions document IG 308 Actuating lever Spring charge lever Cubicle connecting kit ormalink Springs Syntheso grease Earthing bar End plug kit Cubicle end assembly Nylon thread Plastic plugs Side cover Fixing to floor assembly Phase separators for cgm 3 huv lv and cgm 3 huv rbv Figure...

Страница 17: ...c 500 Function Rear wall d l v rc ma lv rbv 100 An operating clearance of 1000 mm is recommended 800 in the case of AFLR Table 4 1 Minimum distances The measurements indicated in the table have been obtained in accordance with the dimensions of the test room for the gas filled modules according to Annex A of Standard IEC 62271 200 The space required to extend the assembly with an additional cubicl...

Страница 18: ... cable rise function Cable details Approximate radius of curvature mm Minimum depth Cable insulation Cable type Cable section mm2 Cable diameter mm D1 mm D2 mm Height 1400 mm Dry insulation One core 18 30 kV 150 41 555 500 800 185 43 590 550 900 240 45 2 640 300 47 5 685 650 1000 400 48 745 Three core 18 30 kV 150 92 7 805 950 950 Height 1745 mm Dry insulation One core 18 30 kV 150 41 555 370 500 ...

Страница 19: ... of curvature mm Minimum depth Cable insulation Cable type Cable section mm2 Cable diameter mm D1 mm D2 mm Height 1400 mm Dry insulation One core 18 30 kV 150 41 555 750 750 185 43 590 800 800 240 45 2 640 300 47 5 685 850 900 400 48 745 Three core 18 30 kV 150 92 7 805 1200 1200 Height 1745 mm Dry insulation One core 18 30 kV 150 41 555 400 400 185 43 590 400 500 240 45 2 640 300 47 5 685 500 600...

Страница 20: ...h necessary for the metering function and auxiliary services Cable insulation Cable type Cable section mm2 Cable diameter mm Approximate radius of curvature mm Minimum depth D2 Dry insulation One core 18 30 kV 150 41 555 600 185 43 590 650 240 45 2 640 700 300 47 5 685 750 400 48 745 800 150 92 7 805 850 Check against the data of the manufacturer of the cable used Table 4 4 Trench necessary for th...

Страница 21: ...nstall the medium voltage cubicles on an auxiliary profile to make it easier to connect This profile which can be supplied to order must be anchored to the floor using expansion bolts a M10 x 25 bolt b 65 x 65 x 4 mm profile c Anchoring bracket Figure 4 6 Positioning cubicles on profile 4 5 2 Fixing to floor by anchoring If the floor of the facility is level enough it is advisable to install the m...

Страница 22: ...oor of the facility using M10 bolts in the points prepared in its base This will prevent displacements or vibrations due to causes such as short circuiting flooding etc The following levels and figures should be taken into account Figure 4 7 Removing the cable compartment cover Anchoring dimensions mm Module a b c d e f g Internal arc 1 s l 50 368 245 540 v 50 545 325 rbv 50 533 245 ma 36 525 rc 5...

Страница 23: ...ctions cgm 3 huv system Fully gas insulated medium voltage switchgear Installation Figure 4 8 Anchoring points in cgm 3 huv l v lv rbv cubicles Figure 4 9 Anchoring points in cgm 3 huv rc cubicles Figure 4 10 Anchoring points in cgm 3 huv ma cubicles ...

Страница 24: ...ng cubicles 4 7 Earthing the switchgear When connecting the general earth collector follow the figure below Figure 4 11 Equipment earthing 1 Bolt the earthing flatbar between every two medium voltage cubicles in the rear section using two hexagonal M8 x 20 bolts Apply a torque of 15 Nm Tools 13 mm open end wrench Torque wrench with 13 mm adapter 2 Connect the end earthing bar marked with the symbo...

Страница 25: ...ectors not even screened connectors Screening does not constitute protection against direct contact When the equipment is in service and a reserve cubicle is left with voltage in the top busbar and without the cables in the bottom bushings insulating plugs must be placed in the bushings EUROMOLD type or the disconnector earthed and locked in this position with a padlock The terminals recommended f...

Страница 26: ...ove the cover to access the cable compartment Figure 4 13 Cable compartment detail 3 Connect the cable connectors on the front bushings and secure the cables using the cable bracket and clamp The clamp has two positions depending on the cable diameter Specific cable brackets should be used for cable diameters above 49 mm Please check with Ormazabal Figure 4 14 Cable connector connection detail ...

Страница 27: ... cgm 3 huv system Fully gas insulated medium voltage switchgear Installation 4 Connect the cable connector earthing connectors if applicable and the cable screens Figure 4 15 Earth connectors connection detail 5 Put the cable compartment cover back in place ...

Страница 28: ...onnect the circuit breaker s earthing switch to earth via the selector 2 Open the top cable compartment cover by unscrewing the 4 knobs on the front cover Figure 4 16 Detail of top front cover opening 3 Open the horizontal door for cables by removing the three outer and two inner fastening screws Figure 4 17 Top cover fixing screws Figure 4 18 Top cover opening ...

Страница 29: ...the cable connectors on the top bushings and secure the cables using the cable bracket and clamp Figure 4 19 Top bushing cable connection 5 Connect the cable connector earthing connectors if applicable and the cable screens Figure 4 20 Earth connectors connection 6 Mount separators between phases Figure 4 21 Mounting separators between phases ...

Страница 30: ... the auxiliary services transformers are located on tracks installed in Ormazabal s cgm 3 huv ma modular metering cubicle These transformers will be laid out and connected in accordance with the diagram and the type of transformers to be assembled For further information on assembling and connecting Ormazabal s cgm 3 huv ma metering and auxiliary services transformers see operation manual MO 145 A...

Страница 31: ...he SF6 gas pressure using the pressure gauge 5 1 Checking the gas pressure Each tank has a pressure gauge for checking the gas pressure which can easily be seen from outside the cubicle The pressure gauge scale is divided into different colours red grey and green For safe operation the needle must be in the green area of the relevant temperature band DO NOT REMOVE THE PLUG from the pressure gauge ...

Страница 32: ...a clear visual indication for the user without needing an auxiliary power supply for operation For each of the three phases the presence of voltage is indicated by intermittent flashing of the indicating relays The voltage detector has the following indications 1 L1 L2 L3 signal each of the indicating relay phases The numbering corresponds to the order of the phases from left to right seen from th...

Страница 33: ...2 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 in the voltage indication units 13 and the black cable to the earth test point This operation must be repeated for all the phases L1 L2 and L3 Figure 5 4 Detail of ekor spc Figure 5 5 ...

Страница 34: ... indicating relay ekor vpis or ekor ivds d Operations area GREY for switch disconnector YELLOW for earthing switch e Status indicating relays BLACK for switch disconnector RED for earthing switch f Actuating shaft access handles Figure 5 8 Mimic diagram for cgm 3 huv l cubicle 5 4 2 Actuating levers The actuating lever to be used to operate the switch disconnector earthing switch of the feeder fun...

Страница 35: ...operation from earthing position 1 Move the actuating shaft access handle in the yellow zone to its bottom position 2 Opening operation Insert the lever in the earthing switch actuating shaft move the actuating arm to the end and turn anti clockwise 90º Figure 5 10 Lever turn process 3 Verify that the cubicle is in isolating position Figure 5 11 Earthing switch opened ...

Страница 36: ...haft access handle in the grey zone to its bottom position 2 Closing operation a Manual operation B driving mechanism Insert the lever in the switch access grey area move the actuating arm to the end and turn clockwise 90º b Motorised operation BM driving mechanisms Activate the corresponding operation command Figure 5 12 Lever turn process 3 Verify that the cubicle is in connected position Figure...

Страница 37: ...cess handle in the grey zone to its bottom position 2 Opening operation a Manual operation B driving mechanisms Insert the lever in the switch access grey area move the actuating arm to the end and turn anti clockwise 90º b Motorised operation BM driving mechanisms Activate the corresponding operation command Figure 5 14 Lever turn process 3 Verify that the cubicle is in isolating position Figure ...

Страница 38: ...ng operation from isolating position 1 Move the actuating shaft access handle in the yellow zone to its bottom position 2 Closing operation Insert the lever in the earthing switch actuating shaft move the actuating arm to the end and turn clockwise 90º Figure 5 16 Lever turn process 3 Verify that the cubicle is in earthing position Figure 5 17 Earthing switch closed ...

Страница 39: ...st can only be carried out in feeder functions which include B BM driving mechanisms with this characteristic Please check with Ormazabal 1 Follow the steps in section 5 4 6 Earthing operation from isolating position 2 Leave the lever in the earthing switch access yellow area 3 Open the bottom cover to access the cable compartment 4 With the lever in the earthing switch access follow the steps in ...

Страница 40: ...relay ekor vpis or ekor ivds d Operations area YELLOW for earthing switch GREY for switch disconnector e ekor rpg protection unit f Status indicating relays g Earthing switch actuating shaft access handle j Spring charge indicating relay k Circuit breaker manual spring charge m Operations counter n Switch disconnector actuating shaft access handle o Circuit breaker operations area RED pushbutton f...

Страница 41: ...ed to drive the switch disconnector earthing switch of the circuit breaker function with AV RAV driving mechanisms are Figure 5 19 Switch disconnector actuating lever Figure 5 20 Spring charge lever 5 5 3 Opening operation from earthing position Initial conditions earthing switch closed and circuit breaker closed 1 Move the access handle in the yellow zone to its bottom position Figure 5 21 Earthi...

Страница 42: ...em Fully gas insulated medium voltage switchgear 2 Earthing switch opening operation Insert the lever in the earthing actuating shaft move the actuating arm to the end and turn anti clockwise Figure 5 22 Lever turn detail 3 Verify that the cubicle is in isolating position Figure 5 23 Earthing switch opened ...

Страница 43: ...rom isolating position Initial conditions earthing switch open circuit breaker closed and springs charged 1 Open the circuit breaker by pressing the 0 button on the front keypad and check the status indicating relay Figure 5 24 Opening button detail 2 Move the access handle in the grey zone to its bottom position Figure 5 25 Switch disconnector driving shaft access handle detail ...

Страница 44: ...ing mechanisms Activate the corresponding operation command Figure 5 26 Lever turn detail 4 Remove the lever The handle returns to its original position 5 For manual driving mechanisms charge the springs by introducing the spring charging lever in the spring charge shaft k and turn until the charged spring indicating relay changes status For motorised driving mechanisms AMV Close the circuit break...

Страница 45: ...closed position Initial conditions circuit breaker closed earthing switch open and springs charged 1 Open the circuit breaker by pressing the 0 opening button and check the status indicating relay Figure 5 28 Opening button detail 2 Check there is no voltage through the ekor vpis or ekor ivds 3 Move the access handle in the grey zone to its bottom position Figure 5 29 Handle detail ...

Страница 46: ...ation BM driving mechanism Insert the lever in the disconnector actuating shaft move the actuating arm to the end and turn anti clockwise 90º b Motorised operation BM driving mechanism Activate the corresponding operation command Figure 5 30 Lever turn detail 5 Remove the lever The handle returns to its original position Verify that the cubicle is in isolating position Figure 5 31 Switch disconnec...

Страница 47: ...isolating position Initial conditions circuit breaker open earthing switch open and springs charged 1 Close the circuit breaker by pressing the l close button and check the status indicating relay Figure 5 32 Closing button detail 2 Check that no voltage is present through the ekor vpis unit 3 Move the access handle in the yellow zone to its bottom position Figure 5 33 Handle detail ...

Страница 48: ... the earthing switch actuating shaft move the actuating arm to the end and turn clockwise 90º Figure 5 34 Lever turn detail 5 Remove the lever The handle returns to its original position Verify that the cubicle is in earthing position 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 35 Earthing sw...

Страница 49: ...vds c Protection unit d S1 and S2 earthing switch operations area e Status indicating relays f Selector s earthing switch actuating shaft access handle g Earthing selector handle S1 side incoming earthing S2 circuit breaker earthing h Circuit breaker manual spring charge i Spring charge indicating relay j Operations counter k Circuit breaker operations area Figure 5 36 cgm 3 huv lv Figure 5 37 cgm...

Страница 50: ...3 huv rbv cubicles Spring charging and actuating levers Figure 5 38 Earthing actuating lever S2 S1 and for selector handle Figure 5 39 Spring charge lever Opening operation from earthing position Initial conditions earthing switch S2 closed and circuit breaker closed 1 Open the circuit breaker by pressing the O button on the front keypad and check the status indicating relay Figure 5 40 Opening bu...

Страница 51: ...ltage switchgear Recommended sequence of operations 2 Select using the lever or check the position of the selector handle in position S2 Figure 5 41 S2 selection handle detail 3 Move the earthing switch s actuating shaft access handle to position S2 Figure 5 42 Detail of S2 earthing switch access handle ...

Страница 52: ... Fully gas insulated medium voltage switchgear 4 Earthing switch opening operation Insert the lever in the S2 earthing actuating shaft move the actuating arm to the end and turn anti clockwise Figure 5 43 Lever turn detail 5 Verify that the cubicle is in isolating position Figure 5 44 Earthing switch opened ...

Страница 53: ...he spring charge shaft and turn until the charged spring indicating relay changes status 2 Close the circuit breaker by pressing I button and check the status indicating relay Figure 5 45 Closing button detail Opening operation from closed position Initial conditions circuit breaker closed earthing switch S2 open and springs charged 1 Open the circuit breaker by pressing the O opening button and c...

Страница 54: ...ing operation from isolating position Initial conditions Circuit breaker open and earthing switch S1 and S2 open 1 Select using the lever or check the position of the selector handle in position S2 Figure 5 47 Selector handle detail 2 Move the earthing switch s actuating shaft access handle to position S2 Figure 5 48 Detail of S2 earthing switch access handle ...

Страница 55: ...witchgear Recommended sequence of operations 3 Earthing switch closing operation Insert the lever in the S2 earthing actuating shaft move the actuating arm to the end and turn clockwise Figure 5 49 Lever turn process 4 Check that the S2 disconnector is in earthing position Figure 5 50 Earthing switch S2 closed ...

Страница 56: ...gas insulated medium voltage switchgear 5 Charge the springs by introducing the spring charging lever in the spring charge shaft and turn until the charged spring indicating relay changes status 6 Close the circuit breaker by pressing I button and check the status indicating relay Figure 5 51 Closing button detail ...

Страница 57: ...function cgm 3 huv lv The huv cubicle model incorporates earthing of the rise side incoming cable Figure 5 52 Side incoming earthing detail Opening operation from side incoming earthing position Initial conditions circuit breaker open and earthing switch S1 closed 1 Select using the lever or check the position of the selector handle in position S1 Figure 5 53 Selector handle detail ...

Страница 58: ...ly gas insulated medium voltage switchgear 2 Move the earthing switch s actuating shaft access handle to position S1 Figure 5 54 Detail of S1 earthing switch access handle 3 Insert the lever in the S1 earthing actuating shaft move the actuating arm to the end and turn anti clockwise Figure 5 55 Lever turn detail ...

Страница 59: ...arthing switch S1 and S2 open Access to the side incoming earthing is linked to the different positions of the elements connected to the huv function circuit breakers open 1 Open the circuit breaker by pressing the O button on the front keypad and check the status indicating relay Figure 5 56 Opening button detail 2 Select using the lever or check the position of the selector handle in position S1...

Страница 60: ...witchgear 3 Move the earthing switch s actuating shaft access handle to position S1 Figure 5 58 Detail of S1 earthing switch access handle 4 Insert the lever in the S1 earthing actuating shaft move the actuating arm to the end and turn clockwise Figure 5 59 Lever turn detail 5 Check the side incoming earthing Figure 5 60 Side incoming earthing ...

Страница 61: ...unction cgm 3 huv rbv Opening operation from earthing position Initial conditions circuit breaker open and earthing switch S1 closed 1 Select using the lever or check the position of the selector handle in position S1 Figure 5 61 Selector handle detail 2 Move the earthing switch s actuating shaft access handle to position S1 Figure 5 62 Detail of S1 earthing switch access handle ...

Страница 62: ...lever in the S1 earthing actuating shaft move the actuating arm to the end and turn anti clockwise Figure 5 63 Lever turn detail Earthing operation Initial conditions circuit breaker closed and earthing switch S1 and S2 open 1 Open the circuit breaker by pressing the O button on the front keypad and check the status indicating relay Figure 5 64 Opening button detail ...

Страница 63: ...voltage switchgear Recommended sequence of operations 2 Select using the lever or check the position of the selector handle in position S1 Figure 5 65 Selector handle detail 3 Move the earthing switch s actuating shaft access handle to position S1 Figure 5 66 Detail of S1 earthing switch access handle ...

Страница 64: ...ral instructions cgm 3 huv system Fully gas insulated medium voltage switchgear 4 Insert the lever in the S1 earthing actuating shaft move the actuating arm to the end and turn clockwise Figure 5 67 Lever turn detail 5 Check the earth connection Figure 5 68 Incoming earthing ...

Страница 65: ...then indicates that a short circuit or zero voltage may occur in the network if the operation is carried out Operation of the unit is assured within the same operating range as the ekor vpis unit associated with it 14 Audible alarm ekor sas for line position Figure 6 1 ekor sas unit 6 2 Interlocks The switchgear is provided with interlocks which ensure the following conditions 1 The switch disconn...

Страница 66: ...bicles are supplied with independent padlock interlocking for both the switch disconnector in closed or open positions and for the earthing switch in closed or open positions Padlocks with ring diameters of between 8 and 11 mm can be used Figure 6 2 Detail of padlock interlocking in function in cgm 3 huv lv Figure 6 3 Detail of padlock interlocking in feeder functions ...

Страница 67: ...eylock interlocking Both the switch disconnector and the earthing switch can have an optional interlocking device which allows operation to be locked in both open and closed positions Figure 6 4 Keylock interlocking detail in function in cgm 3 huv lv Configurable keylock interlocking Figure 6 5 Keylock interlocking detail in feeder functions ...

Страница 68: ...nditions IEC 62271 1 must carry out the regular preventive maintenance tasks required Check with Ormazabal for the environmental conditions of the facility 7 1 Voltage presence indicating relay test To test the ekor vpis or ekor ivds voltage presence indicating relay connect it to a 230 Vac power supply To do this disconnect the ekor vpis or ekor ivds device from the cubicle and using 4 mm cable c...

Страница 69: ...ry out the operation The alarm starts to sound and continues to sound for at least 30 seconds It will stop when the lever is removed The ekor sas alarm can be replaced if necessary since it is joined to the associated units with two friction fit PCB connectors One three pin connector polarised for the voltage presence indicating relay One two pin connector for the lever microswitch The procedure i...

Страница 70: ... maintenance the frequency of this maintenance depends on the existing environmental conditions harsh environments dust extreme temperatures etc and must be established in line with the experience and responsibility of the installer Maintenance should be carried out every 5 years or 2000 operating cycles unless the user together with Ormazabal considers otherwise based on the operating conditions ...

Страница 71: ...ares and accessories must be installed in the cubicle by specialised personnel Contact Ormazabal Driving mechanisms l v B X X BM O O AV O RAV O Circuit breaker motorisation O 4 NO 4 NC circuit breaker O Group of auxiliary contacts 2 NO 2 NC switch 1 NO 1 NC earth connection O Tripping coil O Tripping coil 1 NOC switch micro switch breaking O Bistable 1 NOC switch micro switch Protection metering a...

Страница 72: ...l box for incoming cable O O Medium voltage connection bridges Voltage transformer connection braids Voltage transformers Current transformers Female bushing bushlink bushing converter Operating sequence plate X X Name plate X X 1 Components which can only be replaced by specially qualified Ormazabal personnel 2 In the case of self powered protection units the self power sensors are supplied on th...

Страница 73: ...o 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 piercing system For the usage and handling of the SF6...

Страница 74: ...Notes IG 308 EN version 01 03 06 2022 74 Notes General instructions cgm 3 huv system Fully gas insulated medium voltage switchgear ...

Страница 75: ......

Страница 76: ...Subject to change without prior notice For further information contact Ormazabal Ormazabal y Cía IGORRE Spain www ormazabal com ...

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