IG-296-EN version 01; 12/03/2020
3
General instructions
cgmcosmos: Medium voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Contents
Contents
1. General description ...................................................4
1.1. Models ......................................4
1.2. Standards applied............................4
1.3. Main components ...........................5
1.3.1. Gas tank .....................................6
1.3.2. Driving mechanism compartment ............6
1.3.3. Base .........................................7
1.3.4. Name plate ..................................8
1.4. Electrical specifications......................10
1.5. Dimensions and weights ....................11
1.6. Operating conditions .......................12
2. Handling and transport ...........................................13
2.1. Lifting means ...............................13
3. Storage ......................................................................16
4. Installation ...............................................................17
4.1. Unpacking the equipment ..................17
4.2. Location of accessories during transport .....17
4.3. Minimum installation distances..............19
4.4. Recommended cable connection trenches...19
4.4.1. Cubicles with classification of internal arc
IAC up to 20 KA - 1 s.........................20
4.5. Fastening to the floor .......................23
4.5.1. Fastening to the floor on profile .............23
4.5.2. Fastening to the floor by anchoring..........23
4.6. Connecting the cubicles.....................27
4.7. Earthing the switchgear .....................28
4.8. Cable connections ..........................29
4.8.1. Horizontal front connection .................31
4.9. Vertical front connection ....................33
5. Recommended sequence of operations .................35
5.1. Gas pressure check..........................35
5.2. Feeder function .............................36
5.2.1. Mimic diagram..............................36
5.2.2. Actuating levers ............................36
5.2.3. Opening operation from
the earthing position........................37
5.2.4. Switch closing operation from
isolating position ...........................38
5.2.5. Opening operation from closed position.....39
5.2.6. Earthing operation from isolating position ...40
5.2.7. Cable test...................................41
5.3. Fuse protection function with
AR driving mechanism ......................42
5.3.1. Mimic diagram..............................42
5.3.2. Actuating levers ............................43
5.3.3. Opening operation from earthing position...43
5.3.4. Spring charge operation and closing
of the switch from isolating position.........44
5.3.5. Opening operation from closed position.....44
5.3.6. Earthing operation from isolating position ...45
5.4. Fuse replacement sequence .................46
5.4.1. Selecting recommended fuses ..............50
5.5. Circuit-breaker function with
RAV driving mechanism .....................51
5.5.1. Mimic diagram..............................51
5.5.2. Spring charge and actuating levers ..........52
5.5.3. Opening operation from earthing position...52
5.5.4. Closing operation from isolating position ....54
5.5.5. Opening operation from closed position.....57
5.5.6. Earthing operation from isolating position ...59
6. Safety elements ........................................................61
6.1. Interlocks ...................................61
6.1.1. Locking with a padlock......................61
6.1.2. Locking with a lock..........................62
7. Maintenance .............................................................64
7.1. Preventive maintenance of
the cgmcosmos-v cubicle with
RAV driving mechanism .....................64
8. Spares and accessories ............................................65
9. Environmental information ....................................67
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