Recommended sequence of operations
General instructions
IG-136-EN version 10; 23/06/2016
63
cgm.3 system
Fully SF6 gas insulated medium voltage switchgear up to 40.5 kV in accordance with IEC Standards
4. Insert the lever in the earthing switch driving shaft,
move the driving arm to the end and turn clockwise
90º.
Figure 5.75 Lever turn details
5. Remove the lever. The handle returns to its original
position. Verify that the cubicle is in earthing position.
Figure 5.76 Earthing switch closed
When undertaking work with the cubicle
powered down, it is mandatory to interlock the
earthing position with either a padlock or a
safety lock.
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