Main-contact electrical-contact state on-line detector for low-voltage circuit breaker
A low-voltage circuit breaker and detection device technology is applied in the field of on-line detection devices for the electrical contact state of the main contacts of the low-voltage circuit breaker, which can solve the problems of being unable to reflect the electrical contact state of the main contacts of the low-voltage circuit breaker in real time and accurately, and achieve easy implementation. , to ensure the effect of electrical isolation
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[0014] The following is the technical solution further described in conjunction with the accompanying drawings and embodiments.
[0015] see figure 1 , an on-line detection device for the electrical contact status of the main contacts of a low-voltage circuit breaker, a static contact side voltage detection circuit and a static contact side power supply circuit are arranged at one end of the low-voltage circuit breaker connected to the power line power supply, and a static contact side power supply circuit is installed at one end of the low-voltage circuit breaker connected to the power line load Set the voltage detection circuit on the moving contact side and the power supply circuit on the moving contact side. The voltage detection circuit on the static contact side and the voltage detection circuit on the moving contact side transmit data through optical fibers. Circuit power supply, the power supply circuit on the moving contact side alone supplies power to the voltage det...
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