IG-183-EN version 06; 31/03/2020
70
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. Close the circuit-breaker by pressing button “I”, and
check the status indicator.
Figure 5.42. Grounding switch open
Manual driving mechanism (AV): Charge springs,
operating the charge lever (see Section “5.2.2. Spring
charging lever for cgm.3-v”), until the spring is shown as
tight. Once the spring has been tightened, close the switch
by pressing the close button; then check the status indicator
and whether voltage is present in the ekor.vpis unit.
Motor driving mechanism (AMV): Close the switch by
pressing the closing button; then check the status indicator
and whether voltage is present in the ekor.vpis unit.
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