IG-183-EN version 06; 31/03/2020
56
Recommended sequence of operations
General instructions
cgm
.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
5.7.2. Switch-disconnector closing operation from the open position (using the BR-A driving mechanism)
1.
Move the actuation shaft access handle to its lower
position.
2.
Insert the lever in the switch-disconnector actuation
shaft and with one hand press on the head of the
lever and with the other hand turn clockwise. In the
same turn, the switch-disconnector is closed and the
retaining springs are charged.
3.
Remove the lever, the handle returns to its original
position.
4.
Verify that the cubicle is in closed position.
Figure 5.19.
Closing operation from open position in
cgm
.3-p