Operating The Withdrawable Type Switchgears; Manual Operation Of The Withdrawable Type; Manual Insertion From The Test/Disconnected Position To The Service Position - ABB Uniswitch Operation And Maintenance Manual

Medium voltage switchgear, 12 kv, 17.5 kv, 24 kv, 630 a and 1250 a
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4.4 Operating the withdrawable type switchgears

4.4.1 Manual operation of the withdrawable type

4.4.1.1 Manual insertion from the test/disconnected position to the service position

Figure 4.7
Hand crank
ABB
Uniswitc h Operation and
Maintenanc e Manual
!
Carry out switching operations with the front doors
closed.
Figure 4.6
Withdrawable assembly for circuit-breaker, with auxiliary switches. (3/10)
1) Connect control wiring plug (44.4) (Figure 4.9) to socket (50.1)
(Figure 4.8).
2) Close the front door.
3) Ensure that the circuit-breaker is in the OFF position.
4) Fit hand crank (80.2) on square spigot (60.1) of the spindle
mechanism.
5) Turn the crank clockwise approx. 20 turns until the stop is reached
and the withdrawable part is in the service position.
6) Observe the position indicator.
7) Remove hand crank (80.2).
28
UNI S14GB 05-02

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