Low-pressure permanent magnetic vacuum load switch

Abstract

The invention relates to a low-pressure permanent magnetic vacuum load switch which comprises a box body, wherein an inner frame, a low-pressure vacuum arc extinguishing chamber and an electromagnet are arranged in the box body; the low-pressure vacuum arc extinguishing chamber and the electromagnet are installed on the inner frame; and the low-pressure vacuum arc extinguishing chamber is connected with the electromagnet through a transmission mechanism. According to the invention, a pull-push type electromagnet structure is adopted so that starting current is greatly reduced and the application range of a permanent magnetic mechanism switch is enlarged; not only an energy storing circuit is simplified, but also the cost is greatly reduced; simultaneously, because positive and negative magnetic force perform action at the same time, action reliability is greatly enhanced and action time is greatly shortened; a closing and opening coil is electrified only at the moment of closing and opening of the switch; at ordinary time, the coil is kept in the closing and opening position by means of a permanent magnet; and the loss of the coil on electrical energy is greatly reduced.

Description

technical field [0001] The invention relates to a low-voltage permanent magnet vacuum load switch, in particular to a permanent magnet operating mechanism vacuum arc-extinguishing switch used for low-voltage load control. Background technique [0002] In the prior art, low-voltage switches are mostly air switches or contactors. This type of switch has the advantages of long history of use and simple structure. The shortcomings such as poor arc performance are easy to damage or damage the electrical appliances during use, and the coil needs to be charged for a long time to maintain the state, so the loss of electric energy is inevitable. Contents of the invention [0003] In response to the above needs, the object of the present invention is to solve the above technical problems and provide a low-voltage load control switch with good performance, safe use and energy saving. [0004] The technical scheme of the low-voltage permanent magnet vacuum load switch of the present ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, low-voltage switches are mostly air switches or contactors. This type of switch has the advantages of long history of use and simple structure. The shortcomings such as poor arc performance are easy to damage or damage the electrical appliances during use, and the coil needs to be charged for a long time to maintain the state, so the loss of electric energy is inevitable.

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