Intelligent integrated electricity leakage protection device

Abstract

The invention relates to an earth leakage protection device, in particular to an intelligentized earth leakage protection device. The earth leakage protection device provided by the invention is integrated with the functions of overload, short circuit, default phase, over voltage, under voltage, electric leakage, electric shock, automatic overlap and the like, can conveniently control a multi-path earth leakage protection switch system, display load voltage, load current, leakage current and other parameters of a low-voltage alternating current net, can display current working condition of the earth leakage protection device, historical working condition of an earth leakage protection switch and other functions, has a friendly human-machine interface, can simultaneously distinguish leakage current and shock current to reduce inessential tripping of the earth leakage protection device caused by an electric circuit and equipment leakage, and can improve security of the earth leakage protection device.

Description

technical field [0001] The invention relates to a leakage protection device, in particular to an intelligent leakage protection device. Background technique [0002] The residual current action protector widely used in the low-voltage AC grid is also called the leakage protector. Its basic principle is that the low-voltage AC grid line passes through the zero-sequence current transformer, and the low-voltage AC The residual current of the power grid line reflects the leakage current between the low-voltage AC power grid and the earth. When animal electric shock occurs between the phase line of the low-voltage AC power supply and the earth, or electric lines and equipment leakage occur, the output induction of the zero-sequence current transformer When the residual current changes, when the residual current change is detected and reaches the rated value, the tripping mechanism is activated to cut off the power supply, so as to protect the lives of animals and avoid electrical...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing leakage protectors in the market have defects such as lack of intelligent control, incomplete functions, split structure, complicated wiring, and lack of effective man-machine dialogue interface, and cannot distinguish leakage current from electric shock current, and there are too many abnormal Necessary trip action, causing a lot of inconvenience to electricity users

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