Alternating current contactor

Details Alternating current contactor Alternating current contactor

1990-12-13

1992-06-16

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335277, 335271, H01H 6702

Patent

active

051227703

ABSTRACT:
An alternating current contactor has an armature to be actutated by a magnet system. The armature is operatively connected to a return spring-loaded contact base holding movable contact parts of the contact system. The contact base is here provided with a supplementary mass and brought into operative connection with the armature via a coupling spring, the supplementary mass being movable relative to the contact base and an additionally provided intermediate part to which the armature is coupled. The coupling spring, taking support on the contact base on the one hand, can, on the other hand, bear against an angularly bent end of the intermediate part which is pressed against the supplementary mass. The supplementary mass is applied against a stop at the contact base or being spring-loaded through a separate supplementary spring counter to the direction of movement of the contact base against a stop at the contact base. Friction elements affecting the free movement engage at the supplementary mass, so that a delay of the supplementary mass corresponding to the friction behavior can be achieved. Thereby, the general sensitivity of a magnet system in the case of uneven pole faces to the closing behavior is considerably reduced. This is of special advantage when a contactor can be optimal at 50 and 60 Hz line frequency.

REFERENCES:
patent: 3014103 (1961-12-01), Moran et al.
patent: 3109904 (1963-11-01), Koertge et al.
patent: 3693125 (1972-09-01), Prouty
patent: 4625194 (1986-11-01), Held

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