Means for actuating electro-magnetic switchgear

Details Means for actuating electro-magnetic switchgear Means for actuating electro-magnetic switchgear

1980-12-02

1982-03-02

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

200308, H01H 7312

Patent

active

043180655

ABSTRACT:
The invention relates to a circuit arrangement for actuating an electromagnetic switchgear comprising a switch position indicator, by means of a leading contact that closes a circuit to supply current to an actuating coil of an electromagnet. Main contacts of the switchgear close just after the leading contact. The electromagnet holds all of the contacts in their actuated positions until current through its coil is interrupted.

REFERENCES:
patent: 2534107 (1950-12-01), Curzon
patent: 3816827 (1974-06-01), Lynn
patent: 3852556 (1974-12-01), Kane et al.

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