What is the reason why the submersible sewage pump suddenly stops turning?

The reason why the submersible sewage pump does not rotate, the reason why the submersible sewage pump suddenly does not rotate, the reason why the sewage pump suddenly does not rotate
If the submersible sewage pump suddenly stops running, you should first disconnect the power supply and check the circuit to see if there is a power outage or fuse blown or circuit blockage. If everything in the power circuit is normal, it is likely that the stator winding of the motor is burned out.
Common reasons for the sudden failure of the submersible sewage pump are: the motor of the submersible sewage pump is overloaded for a long time, the temperature is often high, the winding insulation layer slowly ages and becomes ineffective and burned, the single-phase power operation or the long-term working voltage is slightly low, and the current is increased. , the motor overheated and burned out; during the pumping process, the water level dropped too much, causing the submersible sewage pump motor to be exposed to the river for a long time; due to incomplete washing or improper management, the motor was submerged in fine sand: the motor was running , Excessive shutdown, causing the motor to overheat; the cable is damaged or the seal is not tight, water penetrates into the cable, and the insulation layer is burned, resulting in a short circuit failure; there is little water and oil in the wet test submersible pump motor, and the motor dissipates heat. It is damaged due to poor performance; the centrifugal impeller or other rotating components are stuck by dirt, the motor does not rotate, the overcurrent protection device fails, the motor stator current suddenly increases, and the winding is burned out.