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Under Voltage Relay 欠電壓保護器



NJYB3 relay is used to provide overvoltage, undervoltage, phase failure, phase sequence and three-phase unbalance control in three-phase three-wire 380V circuit and three-phase four-wire 220V circuits with a frequency of AC50/60Hz. For Example, it is use

This relay is a voltage protection relay. After detecting the voltage signal, the relay processes the input signal, jusges if there is and overvoltage, undervoltage, phase failure, error-phase or unbalance and controls the operation accurately and stably by means of the built-in microprocessor.



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