In
circuit-breaker functions with AV3 driving mechanism
:
Move the black slide to lock position in order to release the
lock insertion piece.
Figure 6.3.
Slide detail
Figure 6.4.
Padlock locking in functions with AV3 driving mechanism
To return to initial state, completely reintroduce the lock
insertion piece and move the slide up.
6.2.2. Locking with a lock
Cubicles of the
cgmcosmos
system with B/BM driving
mechanisms are designed to optionally incorporate lock
assemblies on the switch-disconnector actuation shafts as
earthing switches, both in the open and closed positions.
Examples of locking with interlocks (optional):
•
Example 1:
Earthing interlocked in open position. This
avoids setting the switch to the "earthing" position until
the key for the low-voltage disconnector lock has been
recovered.
•
Example 2:
Earthing interlocked in closed position
(ALWAYS INTERLOCK for work without voltage). It
prevents anyone from accidentally opening the earthing
switch by removing the earth from the cable.
Key interlocking operation sequence
1.
Move the slide (yellow for the earthing switch actuating
shaft or grey for the switch-disconnector actuating
shaft) until it completely covers access to the lever in
the actuating shaft. The interlock is disabled until the
position indicator is situated in the position shown.
2.
Insert the interlock key and turn it in the direction
indicated on the mimic diagram of the cubicle until it
reaches the stop piece.
It is now that the position indicator is locked until the
sequence to remove the interlock is carried out
3.
Remove the key from the corresponding interlock.
IG-078-EN version 12; 23/04/2020
107
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Safety elements
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