Recommended sequence of operations
General instructions
IG-136-EN version 10; 23/06/2016
37
cgm.3 system
Fully SF6 gas insulated medium voltage switchgear up to 40.5 kV in accordance with IEC Standards
5.4.2 Driving levers
The driving levers to be used to operate the switch –
disconnector – earthing switch of the feeder function with
B or BM driving mechanisms is:
Figure 5.8 B, BM driving mechanism lever
5.4.3 Opening operation from earthing position
1. Move the driving shaft access handle in the yellow
zone to its lower position.
2. Insert the lever in the earthing switch driving shaft,
move the driving arm to the end and turn anti-
clockwise 90º.
Figure 5.9 Lever turn process
3. Verify that the cubicle is in disconnected position.
Figure 5.10 Earthing switch open
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