IG-123-EN version 11; 23/07/2021
43
General instructions
cpg.0: GIS medium-voltage switchgear,
gas insulated, up to 40.5 kV,
in accordance with IEC Standard
Operations sequence
b. Manual earthing switch operation
The EARTHING SWITCH's manual driving lever is
identi ed by the yellow bushing in the neck.
Figure 7.12. Details of the earthing switch's manual driving lever
Connection
Move the access interlock down to the driving shafts and
insert the lever. Then turn 90º CLOCKWISE.
Figure 7.13. Earthing switch closing sequence
Disconnection
Move the access interlock down to the driving shafts and
insert the lever. Then turn 90º ANTI-CLOCKWISE.
Figure 7.14. Earthing switch opening sequence
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