Operation
126 Revision 03 * INSTALLATION AND OPERATING INSTRUCTIONS 8DJH * 500-8067.9
20.2 Cable sheath testing
Work operations Ö Isolate and earth the feeder under test.
Ö Remove the cable compartment cover.
Ö De-earth the cable shield at the cross member of the subframe as well as in
the opposite substation.
Ö Perform the cable sheath test according to the manufacturer's instructions or
the customer’s specifications.
Ö Earth the cable shield again at the cross member of the subframe as well as in
the opposite substation.
Ö Refit and lock the cable compartment cover.
Ö De-earth the feeder in the switchgear and in the opposite substation and switch
the feeder on again.
DANGER!
Normally, the switch-disconnector panel is not interlocked during the cable sheath test.
Prevent switching to OPEN or CLOSED position as follows:
Ö Fit switching prohibition signs.
Ö Secure the locking device (option) with a lock.
Ö Closing lock-out (option)
ATTENTION!
In cable panels type K, the switching operation for the EARTHED position has no
influence on the voltage state of the radial cable behind the screwed-on cable
compartment cover.
Ö Before removing the screwed-on cable compartment cover, isolate and earth
the radial cable in the opposite substation.