| 摘要 |
A circuit breaker test device is provided to select a database according to the kinds of a circuit breaker and to carry out a precise driving point test and a test for discriminating the passing state of test items, selectively. A circuit breaker test device is composed of a display unit(1) outputting the test setting and a result of a circuit breaker(100); a power applying unit(2); a sine wave generator(7) connected to an input stage and a load stage of the circuit breaker to input test current in test rated voltage; a sensing unit(6) detecting the tripping state of the circuit breaker by a trip sensor, by sensing the output of the sine wave generator and detecting current by a current sensor in driving; an operation unit(4) having a measurement set switch; and a control unit(3) controlling the test device according to an input signal of the operation unit. The circuit breaker test device precisely measures the trip current and trip time by automatically controlling the output of the sine wave generator. |
