Auxiliary switch for indicating the condition of a circuit-inter

Details Auxiliary switch for indicating the condition of a circuit-inter Auxiliary switch for indicating the condition of a circuit-inter

1979-11-13

1981-02-10

Shepperd, John W.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

200308, 200310, 200 48R, 340638, H01H 916

Patent

active

042504767

ABSTRACT:
An indicator is disclosed for a high voltage circuit interrupter having a stored-energy mechanism for biasing the contacts open.
The interrupter has a shunt trip mechanism to open the contacts in response to either circuit conditions or a remote command, and a manual mechanism to trip the store-energy mechanism and to recharge and reset the store-energy mechanism. The indicator mimics the operation of the circuit interrupter and provide three signals indicating that the contacts are closed and the manual mechanism are between home and trip position, that the contacts open and the manual mechanism is either in the home or trip position, and that the contacts are open and the manual mechanism is between the trip and reset position or at the reset position. The indicators are preferably two lights with either light on or with both lights out.

REFERENCES:
patent: 2777024 (1957-01-01), West
patent: 2803967 (1957-08-01), Curtis
patent: 3324258 (1967-06-01), Foti et al.
patent: 3742402 (1973-06-01), Nicol et al.
patent: 4135072 (1979-01-01), Maier et al.
patent: 4166989 (1979-09-01), Castongnay

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