The main reasons that affect the normal operation of submersible pumps:

Under normal circumstances, the main factors affecting the normal operation of submersible pumps are as follows：

(1) Leakage problem.The characteristic of the submersible pump is that the machine pump is one body and does not enter the water together, so the problem of leakage is one of the important factors affecting the normal operation of the submersible pump.

(2) Stall.When the submersible pump is blocked, the stator winding will produce a blocking current of 5 to 7 times the normal full load current. Without protective measures, the submersible pump will quickly burn down.There are many reasons for the stall of the submersible pump, such as stuck impeller, broken mechanical seal, stuck shaft, and entanglement of dirt.

(3) The power supply voltage is too low or the frequency is too low.

(4) Wear and corrosion.Wear and tear will greatly reduce the performance of the electric pump, the flow rate, head and efficiency will be reduced, and the impeller and pump cover will rust and cause stall.Corrosion of submersible pump parts will not only affect the performance of the pump, but also shorten the service life.

(5) The cable is broken or broken.Broken or broken cables are not only likely to cause electric shock accidents, but also the water pump is most likely to be in a two-phase working state when it is running, and neither water nor electricity can easily damage the motor.