ABB
12
Uniswitc h Operation a nd
Mainte na nc e Manua l
UNI S14GB 05-02
The withdrawable assembly establishes the mechanical connection
between the cubicle and the circuit-breaker. The fixed part is connected
to the cubicle by forking, which is form-coded on both sides.
Figure 3.6
Withdrawable assembly for circuit-breaker, with auxiliary switches.
The moving part with the circuit-breaker is moved manually by means of
a spindle (
60.1
), between the service or test/disconnected positions with
the front doors closed. Service and test/disconnected positions are set
precisely by means of auxiliary switches (
60.3
), which indicate the final
position reached and the angular position of the spindle.
The rollers and travel rails (
12.1
) (Figure 3.10), which are bolted onto
the cubicle, establish the earthing connection between the withdrawable
part and the cubicle.
Withdrawable parts of the same design are interchangeable.
