YINENG MOTOR
YINENG MOTOR
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Protection method of three-phase asynchronous motor

Protection method of three-phase asynchronous motor

Protection method of three-phase asynchronous motor

The comprehensive protection method for three-phase asynchronous motors adopts general protection and comprehensive protection methods for electronic appliances. Generally, a circuit breaker is used for short circuit protection, and a thermal relay is used for overload protection. Adjust the RP1 action value of the overload and short circuit protection relay to complete the overload and short circuit protection. Use phase-opening protection relay to obtain phase-opening signal, form phase-opening protection circuit according to output voltage change, and realize protection. The temperature relay detects the motor temperature and sends a signal when it exceeds the rated temperature. The contactor cuts off the main circuit to complete the motor protection.

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