This is a Voltage Sensing SPP senses the presence of the three phases and their sequence.If any one of the phases is absent or the sequence of the three phases is reversed it operates the....
This is a Voltage Sensing SPP senses the presence of the three phases and their sequence. If any one of the phases is absent or the sequence of the three phases is reversed it operates the relay. This is perfectly suitable for the protection of the three phase motor. It Automatically resets when the fault condition is gone.
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Kupwad, Sangli, Maharashtra 
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