Apparatus for preventing arc discharge of transfer switch circui

Electricity: electrical systems and devices – Safety and protection of systems and devices

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361 10, 200 38B, H01H 342

Patent

active

044907680

ABSTRACT:
In an arc preventing apparatus of a transfer switch connected to an inductive load, the movable contact of the transfer switch is stopped temporarily while it is transferred from one stationary contact to the other by means of a rotary cam. The cam is provided with a high point, a low point and a peripheral portion intermediate the high and low points so that while the actuating lever of the movable contact is engaging the intermediate peripheral portion, the movable contact is held stationary.

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patent: 3694723 (1972-09-01), Schneider et al.
patent: 3752944 (1973-08-01), Cartier
patent: 3858017 (1974-12-01), Bertozzi et al.
patent: 4173029 (1979-10-01), Rabindran
patent: 4413164 (1983-11-01), Obermann

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