Current anomaly protective circuit

Abstract

The protective circuit for abnormal current comprises: a power unit for supplying power to other units, a current detection unit to detect objective current and generate relative signal for abnormal current to send to the next unit, a control unit generating relative control signal according to its received signal, and an executive unit to cut the wire according to control signal. This invention can cut the fire line or both zero and fire lines simultaneously to prevent electric larceny or leakage, or prevent the fire hazard.

Description

[0001] This application is based on the Chinese patent application with the application number 200610018814.3 filed on April 18, 2006, and claims priority thereof. The entire contents of the aforementioned applications are incorporated herein by reference. technical field [0002] The invention relates to power management technology, in particular to a protection circuit for dealing with abnormal current phenomena. Background technique [0003] At present, in the management of the power grid, it is often encountered that the current in the power grid is abnormal. For example, when there is electricity stealing or electricity leakage in the power grid, the current will be abnormal. In this case, the power property of the power supply department or the end user will suffer heavy losses. For another example, when the end user's load is too large, it will also cause abnormal phenomena such as increased current, and this increased current will burn out electrical equipment if i...

AI Technical Summary

Problems solved by technology

However, in the existing power grid management, there are no more effective countermeasures for the above-mentioned abnormal current phenomenon.

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