IG-183-EN version 06; 31/03/2020
76
Safety elements
General instructions
cgm.3 system: medium voltage SF
6
gas-insulated
cubicles up to 38 kV according to IEEE and CSA standards
6.2.1. Locking with a padlock
[2]
See Ormazabal’s Spare and accessories instructions manual RA-165.
The cubicles are supplied with an independent padlock
interlock for both the switch-disconnector in its closed or
open positions and the grounding switch in its closed or
open positions. Padlocks with ring diameters of between
0.3 inches (8 mm) and 0.4 inches (11 mm) can be used.
Figure 6.1. Interlocking in cgm.3-l cubicle using padlock and keys
6.2.2. Locking with a key lock (optional)
Both the switch-disconnector and the grounding switches
can have an optional locking interlock device
[2]
, which
allows its operation to be blocked in both the open and
closed positions.
Figure 6.2. Interlocking in cgm.3-l cubicle using keys
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