System of maintaining clean electrical contacts

Details System of maintaining clean electrical contacts System of maintaining clean electrical contacts

1990-12-17

1993-01-12

Pellinen, A. D.

Electrical transmission or interconnection systems

Switching systems

With operation facilitating feature

H01H 160

Patent

active

051792907

ABSTRACT:
A method is described for maintaining silver cadmium oxide alloy tips of an electrical contactor clean and substantially free of contamination involving operating the electrical contactor normally, under its regular working operation, in a cold switching mode, and at intervals of time, separating the tips under a load condition. A procedure is described also for determining at what interval the tips should be separated under the load condition. Apparatus is described that will operate to perform this method automatically.

REFERENCES:
patent: 2701965 (1955-02-01), Sherman
patent: 3029351 (1962-04-01), Akmenkalns
patent: 4780786 (1988-10-01), Weynachter et al.

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