27
B
1
1
2
2
A
Key
A)
Key lock for line switch
B)
Key lock for the earthing switch
1)
Free in closed position
2)
Free in open position
5.12.5. Cable testing
CAUTION
The following interventions can only be carried out by skilled
personnel!
WARNING
Pay special attention to safety when performing the following
interventions!
NOTE
During the cable test, the earthing switch will be open when
the cable compartment door is open.
5.12.5.1. Cable testing position
a) Fit the operating lever into the earthing seat.
b) Turn lever clockwise to the “earthed” position.
c) Open cable compartment door.
d) Remove the cover of the operating mechanism
compartment.
e) Push the locking plate into the upper position.
Fig. 51 - “Earthed” position
Fig. 52 - Locking plate
Fig. 50
An example of key interlocks is shown in figure 48. The unit
with single-spring operating mechanism has 2 key interlocks
for the line switch and 2 key interlocks for the earthing switch.
f) Fit the operating lever into the earthing seat.
g) Turn the lever counter-clockwise to the “open” position.
Cable testing can now be carried out.
After cable testing has terminated, work through the
previously described operations in reverse order.
Summary of Contents for GSec/IB
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