Ormazabal cgm.3 system Series - 5.10 Circuit-breaker function with AV; RAV driving mechanism; 6 Safety elements; 6.1 Acoustic earthing prevention alarm; 6.2 Interlocks

General instructions
IG-136-EN version 10; 23/06/2016
5
cgm.3 system
Fully SF6 gas insulated medium voltage switchgear up to 40.5 kV in accordance with IEC Standards
5.10 Circuit-breaker function with AV / RAV driving mechanism ....................................58
5.10.1 Mimic diagram ...................................................................58
5.10.2 Spring charge and driving levers .....................................................58
5.10.3 Opening operation from earthing position ..............................................59
5.10.4 Closing operation from open position .................................................60
5.10.5 Opening operation from closed position ...............................................61
5.10.6 Earthing Operation from the open position .............................................62
6 Safety elements ........................................................... 64
6.1 Acoustic earthing prevention alarm ........................................................64
6.2 Interlocks ..............................................................................64
6.2.1 Locking with a padlock..............................................................65
6.2.2 Locking with a lock.................................................................65
7 Maintenance .............................................................. 66
7.1 Voltage presence indicator test ............................................................66
7.2 Acoustic earthing prevention alarm test ....................................................67
7.3 Specific maintenance for the cgm.3-v cubicle ...............................................68
8 Spares and accessories .................................................... 69
9 Environmental information .................................................. 71