Electrical switchgear apparatus comprising a plug-in circuit bre

Details Electrical switchgear apparatus comprising a plug-in circuit bre Electrical switchgear apparatus comprising a plug-in circuit bre

1999-09-09

2000-12-12

Friedhofer, Michael

Electricity: circuit makers and breakers

Interlocking

Drawout-type switchgear

H01H 920

Patent

active

061602299

ABSTRACT:
An electrical switchgear apparatus comprises a plug-in circuit breaker movable in a fixed frame by means of a drive mechanism. A movable element, secured to the circuit breaker or to the drive mechanism, takes indexed positions characteristic of the plugged-out, test or plugged-in state of the apparatus. The apparatus is provided with at least two indicating switches. Indexing means enable each of the switches to be connected to the movable element in such a way that the first switch switches when the movable element reaches a first indexing position and that the second switch switches when the movable element reaches a second indexing position. The same indexing means, placed in a second state, also enable each of the switches to be connected to the movable element in such a way that the first switch switches when the movable element reaches the second indexing position and that the second switch switches when the movable element reaches the first indexing position.

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patent: 5684282 (1997-11-01), Castonguay et al.
patent: 6005208 (1999-12-01), Castonguay

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