28
Cable tests with the cables connec-
ted can be performed at the mul-
tiple connector via a free connecting
socket per phase.
Warning!
Comply with the safety
provisions in section
1.5!
Important!
The busbar can be operated
with rated voltage during
cable tests in the outgoing
feeder (see rating plate).
Important!
Observe the assembly and
test instructions for the
cable fittings and the termin-
ating connectors!
1. Isolate outgoing feeder cable of
the appropriate switchgear panel.
2. Isolate outgoing feeder cable in
remote station.
3. Earth outgoing feeder cable.
4. Unplug/disconnect the following
devices and earth them if re qui-
red:
- Plug-in type voltage trans-
formers;
- Plug-in type overvoltage arresters;
- Measuring amplifier for capacitive
voltage measurement.
If non-detachable voltage trans-
formers (connected via cable) are
used, these must be disconnec-
ted on the switchgear end and the
sockets must be closed “voltage-
proof” using dummy plugs.
5. Remove test socket dummy
plugs.
6. Connect the test adapter on
multiple connector and test unit
(observe the manufacturer’s
instructions).
Important!
Make sure that the distance
between the metallic com-
ponents of the test adapter
and the earthed subconstruction of
the switchgear is sufficiently dimen-
sioned.
7. Switchgear panel in test position:
The circuit-breaker is switched off
by actuation of the earthing switch
towards “OFF”:
Turn interrogating
lever “earthing switch”
and insert the crank.
Turn crank counter-
clockwise by approx.
1 turn, until the circuit-
breaker has switched
off. The test position
is reached.
8. Perform cable check observing
the instructions of the cable or
cable connector manufacturer.
Once the cable test has been
completed:
9. Earth outgoing feeder cable
again:
- Turn off earthing switch
completely
- Charge the energy storing
device
- Turn earthing switch on again
10. Reconnect all devices which
have been disconnected .
11. Remove test set and close test
socket “voltage-proof” using the
dummy plug.
Cable test from the opposite end
with the cables connected on the
WI switchgear:
For test set-up and implementation,
refer to the instructions of the cable
manufacturer.
Refer to items 1-4 an 7-10 of this
section!
Fig. 6.1
Switchgear panel in test position:
1 Multiple connector
2 Test cable connector
1
2
6 Cable test
>>
Admissible limits for the switch-
gear in case of cable tests:
For information please contact the
manufacturer.