5.9. Fuse protection function with AR driving mechanism
5.9.1. Mimic diagram
The AR driving mechanism has a stored energy operating
system. The opening operation uses the energy stored
during the closing operation, whether manual or motorised.
This energy is retained by means of a retention device. It
can then be released during the opening operation by
manually actuating this retention device. Operation speed
and strength are independent of the action of the operator.
a
Switch-disconnector operation.
b
Earthing switch operation.
c
Switch-disconnector status indicator.
d
Earthing switch status indicator.
e
Earthing switch locking with a padlock.
f
Padlock locking of switch closing and spring charge operations.
g
Live voltage indicator
ekor
.vpis/
ekor
.ivds
h
Manual trip operation.
i
Fuse status indicator:
GREEN: Normal.
RED: Striker tripped.
j
Pressure gauge viewing window.
k
Spring charge indicator.
Figure 5.51.
AR driving mechanism detail
IG-078-EN version 12; 23/04/2020
75
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Recommended sequence of operations
Summary of Contents for velatia cgmcosmos
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