Vacuum alternating-current contactor for mechanical emergency
A technology of AC contactor and emergency action, which is applied to high-voltage air circuit breakers, high-voltage/high-current switches, electrical components, etc., can solve problems not mentioned, and achieve the effect of increasing synchronization
Inactive Publication Date: 2016-02-24
CHENZHOU DONGTANG ELECTRIC EQUIP
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Abstract
The invention relates to a vacuum alternating-current contactor for mechanical emergency. The vacuum alternating-current contactor is composed of an insulated electrical isolation framework, a metal rear sealing plate, an electromagnetic operating mechanism, a manual operating mechanism and a vacuum switching tube; the electromagnetic operating mechanism is provided with a closing keeping buckle plate, a transmission crank arm, a closing armature, a closing coil and an opening spring; a counterbore is formed close to the edge in the longitudinal center of the closing armature, and the metal rear sealing plate is provided with a through hole opposite to the counterbore; a long pull rod penetrates through the through hole in the metal rear sealing plate, the capped portion of the long pull rod is connected with the counterbore of the closing armature, and the tapping portion of the long pull rod is connected with an L-shaped pull hook of a linkage rod of the manual operating mechanism. When a secondary control circuit fails or an electromagnetic coil of a vacuum switch is damaged, a fire-fighting water pump and a hydrant can be manually started for emergency by adopting the vacuum alternating-current contactor.
Application Domain
High-tension/heavy-dress switchesAir-break switches
Technology Topic
ContactorElectrical isolation +7
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