Residual current circuit breaker

A technology of residual current and circuit breaker, applied in the field of residual current circuit breaker, can solve problems such as cost increase, and achieve the effect of improving the efficiency of commutation, improving real-time performance, and ensuring reliable operation

Inactive Publication Date: 2015-12-23
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a residual current circuit breaker to solve the problem of increased cost caused by the simultaneous allocation of a residual current circuit breaker and a commutation device

Method used

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  • Residual current circuit breaker
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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] Such as figure 1 The residual current circuit breaker shown includes an analog quantity acquisition module, a microprocessor and a protection module, the microprocessor is connected to the information acquisition module for sampling, and the control is connected to the protection module. Wherein, the protection module is the tripping circuit of the circuit breaker. The circuit breaker also includes a phase change device and a three-phase balance module, the three-phase balance module is a wireless communication module, and the microprocessor communicates with the phase change device through the wireless communication module. Through the wireless communication module, remote data transmission and communication of control information can be realized. The circuit breaker is usually installed on the distribution line on the low-voltage side of the distri...

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Abstract

The invention relates to a residual current circuit breaker, including an information acquisition module, a processor module, a protection module and at least one commutation device. The processor module is connected with the information acquisition module in a sampling mode, and is connected with the protection module in a controlling mode, each commutation device consists of three commutation modules arranged at a user side and includes a commutation switch and a mutual inductor used for collecting phase information on a corresponding phase, the commutation switch is correspondingly connected with one phase of a power supply line of the user side in series, and the commutation devices are in communication connection with the processor module. Through the circuit breaker, conventional functions of a circuit breaker can be realized, i.e., fault action protection of a line is realized through detection of line current, and in addition, control of a phase change of the user side can also be realized, thereby solving the problem of three-phase load unbalance. The circuit breaker can save a special commutation device, the phase change is realized through the residual current circuit breaker, and input cost and subsequent maintenance cost are saved.

Description

technical field [0001] The invention relates to a residual current circuit breaker. Background technique [0002] The residual current protection circuit breaker is a terminal protection device widely used in the terminal power distribution device of the electrical industry, mainly used to prevent personal electric shock accidents and fire hazards. At the same time, in the power industry, it is necessary to accurately grasp the operation status and load status of the circuit breaker, so as to be able to take preventive measures; at the same time, when the line fails, it can be found and dealt with in time. For example, the Chinese patent application document with the application number 201020144929.9 discloses a miniature residual current protection circuit breaker, including an information acquisition module, a processor module and a protection module. The information acquisition module collects current information on the line and transmits the collected information To the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/34H02J3/26
CPCY02E40/50
Inventor 陈杰田二胜孙彦彪汪兴宁孙金国张永新朱国栋原利敏边伟杜路路王韬尉张小伟
Owner STATE GRID CORP OF CHINA
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