Current detection system used for arc failure circuit breaker

Abstract

The invention discloses a current detection system used for an arc failure circuit breaker. The current detection system comprises a current transformer and an integrating circuit. An output end of the current transformer is connected with an input end of the integrating circuit. The current transformer is a Rogowski coil. A skeleton of the Rogowski coil includes iron, silicon and aluminum. Two layers of enamelled wires are uniformly wound on the skeleton. The current detection system used for the arc failure circuit breaker is large in current amplitude range, high in response speed, small in size and wide in frequency range.

Description

technical field [0001] The invention relates to the field of safety protection of electrical equipment, in particular to a current detection system for an arc fault circuit breaker. Background technique [0002] With the progress of society and the wider and wider range of electricity consumption, the electrical fires caused by electricity consumption are increasing year by year, and have become the main cause of fires. According to statistics, in recent years in my country, electrical fires have accounted for more than 34% of the total fire accidents, seriously threatening the safety of people's lives and property, and have become the focus of fire prevention and control. Technical measures must be taken to fundamentally suppress the occurrence of electrical fires. [0003] Existing overcurrent protection devices and residual current protection devices cannot reduce the risk of electrical fires caused by arc faults. This type of electrical fire accident accounts for about 3...

AI Technical Summary

Problems solved by technology

[0005] 1. The range of current amplitude is small, which cannot effectively capture the characteristic information of arc fault current;

[0006] 2. The response speed is slow, and the purpose of breaking at an accurate time point cannot be achieved;

[0007] 3. Large volume, which is not conducive to mass production, and even more unfavorable to modify the frame of the existing circuit breaker;

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