JPS63279U - - Google Patents

Description

[Brief explanation of the drawing]

1 and 2 are circuit diagrams showing the circuit configuration of the present invention, FIGS. 3 to 5 are waveform diagrams showing recovery voltages according to the embodiments, and FIG. 6 is a circuit diagram showing a conventional device. , FIG. 7, and FIG. 8 are waveform diagrams showing recovery voltages according to conventional devices, respectively. 1... AC power supply, 2... Closing device, 3... Current limiting reactor, 4... Auxiliary circuit breaker, 5... Test sample or circuit breaker, 6... Capacitor for applying recovery voltage,
7...Transformer, 8...First impedance component, 9...Second impedance component, 10...
Injector.

Claims (1)

[Claims for Utility Model Registration] A current with a delayed power factor is applied from a current source circuit including an AC power source and a reactor to the test sample or disconnector, and after the current is interrupted, a recovery voltage is applied to the AC power source via a transformer. In the shield breaker testing device, which applies a recovery voltage to the shield breaker from a voltage source circuit connected to an application capacitor, thereby simulating a leading current circuit breaker test of an actual circuit, A first impedance component and a first impedance component that divide the secondary side or primary side voltage of the transformer and supply the divided voltage directly or via the transformer to the series circuit of the recovery voltage applying capacitor and the test sample and disconnector. 2, and a charger provided so as to obtain a state in which the pressure is divided by the impedance component when closed and a state in which the pressure is not divided in the open state, and when the charger is closed and the impedance component A test device for a breaker, which is characterized by adjusting the recovery voltage of a test sample or a breaker by selecting an impedance value.