Contactor

Abstract

A contactor includes a master, an upper dynamic iron core, a lower static iron core, a coil winded on the lower iron core, a spring and a constant magnet, also an electronic module for realizing magnet-keeping containing a commutating circuit, an amplifying circuit and an inverting circuit with three output ends. Since it applies an electronic module, it uses oil of the original contactor.

Description

technical field [0001] The invention relates to a switchgear for power supply, in particular to a contactor for a power automation system. Background technique [0002] Contactors have been widely used in power automation systems, cement plants, steel plants, chemical industry, light industry, mechanical power distribution and other industrial systems, involving all walks of life, with a consumption of about one billion in the country. [0003] At present, the contactors on the market generally have the disadvantages of high energy consumption, noise, easy to be burned by heat, easy to trip or even burn out load equipment due to grid voltage fluctuations. These disadvantages that exist have been improved very well, but the scope of promotion is limited due to imperfect technology, high cost, complex structure, and especially difficult access to automatic control circuits. [0004] For example, in the Chinese patent No. 200420025887.1, an integrated low-energy consumption no...

AI Technical Summary

Problems solved by technology

However, due to the use of vulnerable and energy-consuming components such as electrolytic capacitors, silicon controlled rectifiers, and anti-magnetic coils in the realized circuit, the structure, power consumption, and cost of the AC contactor have not yet been improved.

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