Anti-pollution low-voltage vacuum contactor

Abstract

The invention discloses an anti-pollution low-voltage vacuum contactor which comprises an insulating base. A mounting cavity is formed in the front surface of the insulating base, a vacuum contactor body is fixedly mounted in the mounting cavity, and three fixing blocks are fixedly mounted at the top of the insulating base. According to the anti-pollution low-voltage vacuum contactor, through cooperative use of an anti-pollution cover, a clamping base, an access port, a limiting sliding groove, a first clamping device, a clamping base, a clamping rod, a connecting piece, a second clamping device, a partition plate, a ball, a limiting sliding rod, a clamping spring, a limiting sliding sleeve, a limiting sliding block, a clamping plate, a fixing cavity and a connecting sliding groove, the anti-pollution cover is fixedly installed, so that the vacuum contactor body is located in a relatively sealed environment, the vacuum contactor body is prevented from being in direct contact with the outside to be protected, and dust is effectively prevented from being deposited on a vacuum plate extinguishing chamber and related mechanisms of the vacuum contactor body.

Description

technical field [0001] The invention relates to a vacuum contactor, in particular to an anti-pollution low-voltage vacuum contactor. Background technique [0002] The vacuum contactor uses the vacuum interrupter to extinguish the arc to frequently connect and cut off the normal working current. It is usually used for long-distance connection and disconnection of 6kV and 380V AC motors such as 6kV and 380V that frequently start and stop at medium and low voltages. The series of low-voltage vacuum AC motors Contactors are widely used in various industries such as coal mines, electric power, metallurgy, textiles, and high-rise buildings. Low-voltage vacuum AC contactors are used for long-distance switching on and off circuits, and frequent starting and stopping of AC motors. It is especially suitable to be assembled with various protection devices to form a flameproof electromagnetic starter. The vacuum contactor is mainly composed of a vacuum interrupter and an operating mech...

AI Technical Summary

Problems solved by technology

[0003] However, when the traditional low-voltage vacuum contactor is in use, because the insulating base is an open structure, the vacuum interrupter is directly exposed to the air, and the working environment of the vacuum contactor is mostly harsh, with serious dust and vacuum. More dust is easy to deposit on the extinguishing chamber and related mechanisms, which will pollute the low-voltage vacuum contactor, affect the breaking of the contactor, and affect the arc extinguishing effect of the vacuum interrupter, reducing the service life of the vacuum contactor

Images