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△Connection method Motor zero sequence voltage relay phase failure protection circuit
Source: InternetPublisher:傻阿乐 Updated: 2014/04/25
In the circuit shown in the figure, three resistors R1~R3 are connected to form an artificial neutral point. When the motor loses phase, the neutral point shifts, relay K is energized, and its normally closed contact acts, cutting off KM Coil loop, KM is released when power is lost, thus protecting the motor. Latest Control Circuits Circuits
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