500-8067.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DJH • Revision 05 113/121
Operation
Test voltages
Testing ➭ Barrier the area around the testing place.
➭ De-earth.
➭ Perform the test according to the recommendations of the cable manufacturers or the
customers' specifications.
After completion of test ➭ Earth the feeder under test.
➭ Remove cable test elements.
➭ Clean the screw-type cone and apply the supplied mounting paste.
➭ Mount the screw-type cone on the T-plug according to the manufacturer's instructions.
➭ Fit and lock the cable compartment cover.
➭ De-earth the panel and the opposite substation, and re-energize the feeder.
22.2 Cable sheath test
Work operations ➭ Isolate and earth the feeder under test.
➭ Remove the cable compartment cover.
➭ De-earth the cable shield at the cross member of the subframe as well as in the opposite
substation.
➭ Perform cable sheath test following the recommendations of the cable manufacturers or
the customer's stipulation.
➭ Earth the cable shield again at the cross member of the subframe as well as in the opposite
substation.
➭ Refit and lock the cable compartment cover.
➭ De-earth the panel and the opposite substation, and re-energize the feeder.
Rated voltage of the
switchgear [kV]
DC test voltage AC test voltage VLF
1
0.1 Hz
AC DC Rectangle [kV] Sinus [kV] Test
duration
[min]
U
ct
[kV] Test
duration
[min]
U
ct
[kV] Test
duration
[min]
Mean value Maximum
value
Mean value Maximum
value
7.2 11 1 22 15 22 22 15.6 22 60
12 19 1 38 15 38 38 26.8 38 60
15 28 1 52 15 52 52 36.8 52 60
17.5 28 1 52 15 52 52 36.8 52 60
24 38 1 72 15 72 72 51 72 60
1
Very low frequency
DANGER
High voltage! Danger!
➭ Isolate.
➭ Secure against reclosing.
➭ Verify safe isolation from supply.
➭ Earth and short-circuit.
➭ Cover or barrier adjacent live parts.
DANGER
During the cable sheath test, the feeder is not interlocked . Do not switch to OPEN or CLOSED
position.
➭ Fit switching prohibition signs.
➭ Padlock the locking device (option).
➭ Closing lockout (option).
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