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Residual current operated circuit breaking device

A technology of residual current and circuit breaking device, applied in emergency protection circuit devices, electrical components and other directions, can solve the problems of line leakage, increase hidden faults, protection switch failures, etc., and achieve the effect of improving resistance

Pending Publication Date: 2019-07-09
浙江思创电力科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the need for periodic fault testing, the user experience is reduced, and users may not perform periodic testing operations, further increasing the potential for faults
In addition, even if the user conducts the test periodically according to the requirements, there may be cases where the protection switch can still operate normally during a certain test, but the protection switch fails before the next test, and the circuit leaks again, making the protection The switch cannot realize leakage protection

Method used

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  • Residual current operated circuit breaking device
  • Residual current operated circuit breaking device
  • Residual current operated circuit breaking device

Examples

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Embodiment Construction

[0037] The core of the present invention is to provide a residual current actuated circuit breaker, which improves the resistance to faults and is beneficial for the circuit breaker to successfully complete leakage protection when the line leaks.

[0038] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a residual current operating circuit breaker in the present invention, which in...

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PUM

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Abstract

The application discloses a residual current operated circuit breaking device, comprising: a first zero sequence transformer which is arranged on a line to be detected and is used for outputting a first feedback signal when detecting a residual current through a first winding; a residual current detection circuit which is connected with the first zero sequence transformer and is used for making afirst end of a first switching circuit connected with a second end of the first switching circuit when receiving the first feedback signal; the first switching circuit of which the control end is connected with the residual current detection circuit; an electromagnetic tripper which is used for performing a switching-off action on the line to be detected after the first switching circuit is turnedon; a circuit breaker motherboard of which the input end is connected with the second end of the first switching circuit and which is used for making an electric switching-on / off operation mechanismperform a switching-off action on the line to be detected after the first switching circuit is turned on; and the electric switching-on / off operation mechanism which is connected with the circuit breaker motherboard. The scheme of the application improves the resistance to faults, and is beneficial to the completion of leakage protection by the circuit breaking device when leakage occurs to the line.

Description

technical field [0001] The invention relates to the technical field of circuit protection, in particular to a residual current operated circuit breaker. Background technique [0002] A residual current action protection switch is usually set in the line to realize the protection of the residual current, that is, the leakage protection. Specifically, when leakage occurs, the zero-sequence transformer will feed back a signal to the thyristor, so that the electromagnetic tripper performs a pull-in action, and the pull-in action drives the switch to trip and open. [0003] After the residual current action protection switch is installed, it is generally not disassembled for maintenance. If the electromagnetic tripper is damaged, the relevant circuit board is faulty, the relevant mechanical structure is stuck, etc. during operation, it will cause leakage. If the switch cannot be opened, it may cause harm to the user's personal property. Therefore, it is necessary to make the re...

Claims

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Application Information

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IPC IPC(8): H02H7/26
CPCH02H7/262H02H7/263
Inventor 郑建业李云桂包宇然谢忠夫
Owner 浙江思创电力科技股份有限公司
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