Off-phase protection meansThree-phase asynchronous motorDuring normal operation, any power supply suddenly breaks, and the motor is in off-phase operation at this time. Today, Senli Motor Xiaobian will understand the asynchronous motor phase break protection with you.

       When the motor is in phase break operation, it is actually working under a single-phase power supply, then the stator current of the motor will increase, the speed will decrease or even generate blocked rotation, and the motor will burn out if the time is too long, so the phase break operation is alsoThree-phase asynchronous motorOne of the main causes of damage.

       Analysis of the causes of motor phase break operation: fuse one phase melt burn, winding one phase break, one phase contact is poor or loose off, power supply one phase line break, etc., of which fuse one phase burn is more common. When the three-phase asynchronous motor is in phase break operation, the connection between the line current and the motor winding will be different because of the different phase break form. When the load increases, the fault current will also increase.

       Phase break protection method:

       1) Relay with phase break protection

       2) Use voltage relay

       3) Undercurrent relay is used

       4) Break voltage protection

       5) Use a phase break protection relay specially designed for phase break operation

       Shengzhou Senli MotorisThree-phase asynchronous motor manufacturers, supplied3KWAnd the following small power motor. Our products from the shell, shaft, rotor, stator are independently produced, the production process is strictly in accordance with the quality system management. Can provideOEM/ODMCustomization, specification customization, appearance customization, special shaft customization and color customization. If you want to know more about this type of motor or are interested in learning about our products, please leave a message online or call us directly0575-8378-1127.