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DC power supply overvoltage, undervoltage and overcurrent protection circuit
Source: InternetPublisher:红水杯 Keywords: DC power supply overcurrent protection circuit circuit breaker Updated: 2021/04/27
This protection circuit
will trigger the thyristor to conduct when the DC power input voltage is greater than 30V or less than 18V or the load current exceeds 35A,
causing the circuit breaker QF to trip. In the figure, YR
is the trip coil of circuit breaker QF; KI is the overcurrent
relay.
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