Quick automatic change-over switch

A technology of automatic transfer switch and action coil, applied in electric switches, power devices inside switches, electrical components, etc., can solve the problems of high price, short service life, slow conversion speed, etc., and achieve long service life and fast conversion speed. , cost-effective effect

Inactive Publication Date: 2007-12-26
TIANJIN BAILI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current market, the known automatic transfer switches generally have slow conversion speeds, the slow ones are 1.5-4 seconds, and the fast ones are also 200 milliseconds. In addition, the service life is short, the service life is only 5000 times at most, and the price is expensive.

Method used

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  • Quick automatic change-over switch
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Embodiment Construction

[0010] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0011] Please refer to Figure 1, the series circuit of the normally open auxiliary contact of the AC contactor KM1 and the working indicator d1 and the common power supply U N At the same time, the series circuit of the normally open auxiliary contact of the AC contactor KM1 and the working indicator light d1 is connected in parallel with the action coil of the intermediate relay ZJ after passing through the self-locking button SB1, and in parallel with the action coil of the AC contactor KM1 , In addition, the series circuit of the normally open auxiliary contact of the AC contactor KM1 and the work indicator light d1 is also connected in parallel with the power indicator light D1. The series circuit of the normally open auxiliary contact of...

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PUM

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Abstract

This invention relates to a rapid automatic change-over including two AC contactors connected by a mechanical interlocking piece, one is connected with the major supply, the other with the standby supply. It also includes an intermediate relay and two self-locking buttons, the operation coil of the relay is parallel to that of the AC contactor connected with the major supply then to connect with the major supply by a self-locking button, the operation coil of the AC contactor linked with the standby supply is serial with the normally-closed contact of the relay then to be connected with standby supply by the other self-locking button, which can avoid providing power at the same time by two supplies and generating short circuit.

Description

Technical field [0001] The invention belongs to electric switches, in particular to a fast automatic transfer switch. Background technique [0002] In the current market, the known automatic transfer switches generally have slow conversion speeds, the slow ones are 1.5-4 seconds, and the fast ones are also 200 milliseconds. In addition, the service life is short, the service life is only 5000 times at most, and the price is expensive. . Contents of the invention [0003] The invention provides a fast automatic transfer switch to solve the technical problems in the known technology. [0004] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is: a fast automatic transfer switch which includes two AC contactors connected together through a mechanical interlock mechanism, and one AC contactor is connected to a common power supply for The common power supply is connected and broken, and the other AC contac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/28H01H3/54H01H9/20
Inventor 梁燕徐景行刘冬英李克芹
Owner TIANJIN BAILI ELECTRIC CO LTD
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