5.4.7. Cable test
These driving mechanisms allow the operation
of going from earthing switch closed to switch-
disconnector open, even when the cable compartment
cover is open. Thus, the switch-disconnector cannot
be changed to the closed position until this cover has
been put back.
The cable test can only be carried out in
cgmcosmos
-l feeder functions which include B/BM
driving mechanisms with this characteristic. Please
check with
Ormazabal
.
1.
Follow the steps in section “5.4.6. Earthing operation
from open position”.
2.
Leave the lever in the earthing switch access (yellow
area).
3.
Open the bottom cover to access the cable
compartment.
4.
With the lever in the earthing switch access, follow
the steps in section “5.4.3. Opening operation from
earthing position”.
5.
Carry out the cable test.
6.
To return to earthing position, follow the steps in section
“5.4.3. Opening operation from earthing position”.
7.
Close the bottom cover to access the cable
compartment.
8.
Follow the steps in section “5.4.6. Earthing operation
from open position”.
IG-078-EN version 12; 23/04/2020
57
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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