IG-183-EN version 06; 31/03/2020
71
General instructions
cgm
.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
Recommended sequence of operations
5.10.3. Opening operation from the closed position
Initial conditions:
Grounding switch open, circuit-
breaker closed and springs charged.
Figure 5.43.
B/BM Driving mechanism lever
1.
Open the circuit-breaker by pressing the “0” opening
button on the front push-button and check the status
indicator.
Figure 5.44.
Press the “0” button
2.
Check that no voltage is present using the
ekor
.vpis
unit.
3.
Move the handle in the grey zone to its lower position.
Figure 5.45.
Move the handle in the grey area
