Intelligent residual-current circuit breaker calibration system and method based on power source

Abstract

The invention provides an intelligent residual-current circuit breaker calibration system and method based on a power source. A first current output terminal of the power source is connected with one end of a first winding, the other end of the first winding is connected with a zero line end of an intelligent leakage circuit breaker, and the zero line end is connected with a second current output terminal of the power source; a first voltage output end of the power source is connected with one end of a second winding; a second voltage output end is connected with the zero line end; one end of the second winding is connected with a phase line incoming end, and the other end of the second winding is connected with a phase line outgoing end; the first current output terminal and the second current output terminal output currents equal in current and opposite in direction, and the currents flowing into the phase line incoming end and the zero line end of the intelligent leakage circuit breaker are equal in magnitude and opposite in direction, so that the current vector sum of the intelligent leakage circuit breaker is the phase line outgoing end of a zero phase line incoming end. The system is used for calibrating the intelligent leakage circuit breaker, and tripping of the intelligent leakage circuit breaker during calibration is prevented.

Description

technical field [0001] The invention relates to the technical field of leakage circuit breaker calibration, in particular to a power source-based intelligent leakage circuit breaker calibration system and method. Background technique [0002] At present, the existing intelligent leakage circuit breaker will leak electricity during calibration, so that the intelligent leakage circuit breaker will trip during calibration, and the voltage and current of the intelligent leakage circuit breaker cannot be calibrated. [0003] Such as Figure 1a As shown, with the existing connection method, when the power source is used to calibrate the current of the intelligent leakage circuit breaker, the current output terminals Ia and Ia* of the power source are respectively installed at the input terminal of the phase line and the output terminal of the phase line of the intelligent leakage circuit breaker. Wiring diagram as Figure 1a shown. According to the principle analysis, the zero-se...

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Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a power source-based smart leakage circuit breaker calibration system and method for solving the problem of how to calibrate smart leakage circuit breakers in the prior art

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