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Contactor starting performance improver circuit

In the grid voltage is low, often leads to exchanges and contacts in the control circuit can not reliably pull, if the AC voltage regulator to stabilize the contactor coil voltage, not only increases costs, but also in severe voltage of contactor case can not be released, the motor voltage operation, it is likely to cause the motor burned out.
DC resistance is relatively small for the exchange of contacts (such as the CJ-20A.CJ-40A, etc.), press the graph approach, in the start button a rectifier diode in series QA 2CZ, DC Starting Used to exchanges and contacts can be have a greater starting current, ensure the exchange of contacts in low voltage reliably pull. After testing, coil rated voltage from 380V down to 240V, 150V or 220V when dropped, CJ-20A.CJ-40A contactor can normally pull. Pick-up, the diode Jibei CJ contactor auxiliary contacts are shorted, it does not affect the normal operation of the contactor.

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Contactor starting performance improver circuit