Selective protection switch and operation mechanism thereof

A technology of protection switch and operating mechanism, applied in the direction of protection switch operation/release mechanism, emergency protection circuit device, automatic disconnection emergency protection device, etc. Delay protection characteristics, lack of selective protection functions and other problems, to achieve the effect of simple structure, reduced burning loss, and convenient assembly

Active Publication Date: 2009-07-22
SEARI ELECTRIC TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, with the development of building electrical and building automation, miniature circuit breakers are more and more widely used in residential power distribution systems

Method used

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  • Selective protection switch and operation mechanism thereof
  • Selective protection switch and operation mechanism thereof
  • Selective protection switch and operation mechanism thereof

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Experimental program
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Embodiment Construction

[0028] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] refer to figure 1 As shown, the selective protection switch provided by the present invention includes:

[0030] The main circuit 11 is located between the incoming line terminal 13 and the outgoing line terminal 14. The main circuit 11 includes an overcurrent release 15 connected in series, a main contact 16 and an electromagnetic mechanism 17, wherein the electromagnetic mechanism 17 makes the The main contacts 16 are disconnected and maintained in the disconnected position;

[0031] Auxiliary circuit 12, the auxiliary circuit 12 is connected in parallel with the overcurrent release 15 and the main contact 16 on the main circuit 11, the auxiliary circuit 12 includes a series current limiting resistor 18, a selective protection release 19, and auxiliary contacts 20;

[0032]An operating mechanism 21, the operating mechanism has an...

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Abstract

The invention discloses a selective protection switch, comprising a main loop, an auxiliary loop and an operation mechanism, wherein the main loop is arranged between an inlet terminal and an outlet terminal, and comprises an overcurrent release, a main contact and an electromagnetic mechanism which are connected in series, wherein the electromagnetic mechanism leads the main contact to be disconnected and maintain the disconnected position through a third working line; the auxiliary loop is connected with the overcurrent release and the main contact on the main loop in parallel, and comprises a current-limiting resistor, a selective protection release and an auxiliary contact which are connected in series; the operation mechanism is provided with an operation handle, and respectively acts on the main contact and the auxiliary contact by a first working line and a second working line through rotating the operation handle, so that the main contact and the auxiliary contact are disconnected or closed; the overcurrent release acts on the operation mechanism through a forth working line, so that the operation mechanism is released; the selective protection release acts on the operation mechanism through a fifth working line, so that the operation mechanism is released; and after the operation mechanism is released, the main contact and the auxiliary contact are disconnected simultaneously.

Description

technical field [0001] The invention relates to the field of circuit breakers, more specifically, to a selective protection switch in the circuit breaker and its operating mechanism. Background technique [0002] At present, with the development of building electrical and building automation, miniature circuit breakers are more and more widely used in residential power distribution systems. The phenomenon of jump-level tripping in the residential power distribution system is relatively common, which greatly affects the stability and reliability of the power distribution system. Contents of the invention [0003] The present invention aims to provide a selective protection switch, comprising: [0004] The main circuit is located between the incoming line end and the outgoing line end, and the main circuit includes an overcurrent release, a main contact and an electromagnetic mechanism in series, wherein the electromagnetic mechanism disconnects and maintains the main conta...

Claims

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Application Information

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IPC IPC(8): H01H71/12H01H71/46H01H73/18H01H71/16H01H71/24H02H3/093
Inventor 葛伟骏陈颖王碧云龚骏昌薛涵吴辉丁高峰
Owner SEARI ELECTRIC TECH
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