Recommended sequence of operations
37
General instructions
cgmcosmos
system
Medium voltage switchgear and control gear, fully insulated in SF
6
gas up to 24 kV with external cable test device
IG-257-EN version 01; 03/02/2016
5.5.5 Isolation operation from the connected position
Starting conditions:
circuit-breaker closed.
1.
Open the circuit-breaker by pressing the “O” opening
button.
Fig. 5.30
Detail of “0” pushbutton
2.
Check that it is de-energised.
3.
Verify that the cubicle is in disconnected position.
Fig. 5.31
Circuit-breaker open and springs discharged indicator
5.5.6 Earthing operation from the open position
Starting conditions
: circuit-breaker open,
disconnector-switch open.
1.
Turn the access selector in the lever insertion area
to the left.
Fig. 5.32
Operation selection via the selector
1
3
1
Summary of Contents for cgmcosmos-2lv
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