IG-183-EN version 06; 31/03/2020
6
Description and main characteristics
General instructions
cgm.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
1.1. Cubicle elements
Each cubicle is made up of a series of independent
compartments:
1
Gas tank
1.1
Side connection female bushings
2
Driving mechanism area
2.1
Name plate
2.2
Operating sequence plate
2.3
Actuating shafts (see mimic diagram of each model)
2.4
ekor.vpis/ekor.ivds voltage presence detection unit*
2.5
ekor.sas acoustic earthing prevention alarm unit*
3
Base
3.1
Cable compartment access cover
3.2
Medium voltage cable xing support
3.3
Gas relief compartment
3.4
Earth collector
3.5
Front cable connection bushings
Figure 1.1. Main components of cgm.3 cubicles
1. Gas tank: Sealed compartment which houses the
busbar and the switching and breaking elements,
where the insulating medium is SF
6
.
The gas tank has a membrane to allow gases to escape
in the event of an internal arc.
Do not rell the switchgear.
Figure 1.2. Gas tank
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