The reason why the submersible pump in deep well does not discharge water after electrification

The reason why the submersible pump in deep well does not discharge water after electrification

The main reasons why the submersible pump in the deep well does not discharge water after electrification are as follows:
(1) the power supply voltage is too low, submersible electric pump failure to start treatment method is to switch to a more than 342 v voltage, if because of various reasons voltage less than 342 v, and submersible pumps must be used, can be appropriately large submersible electric pump protection switch setting current.However, the current shall not exceed 1.1 times of the rated current of the motor when it is used, and the service time shall be controlled, so that the motor will not be overloaded for too long, causing the stator winding to overheat and damage.
(2) power supply or power phase, such as cable fault protection switch, fuse fusing, control processing methods, such as poor contact, control protection device is carefully check the fuse protection switch, control and protection devices, check whether due to power off or power, or because of the fuse, switch and protective device or poor contact caused a power failure or phase, then fix the fuse, switch and protection caused by power outages or broken.
(3) the impeller sticking treatment method of water pump is to remove the water pump, remove the impeller debris, and repair the water pump.
(4) the stator coil short-circuit treatment method is to check the stator coil short-circuit and repair the stator winding of the submersible electric pump.At the same time, check the cause of short circuit of stator coil, eliminate the fault of submersible motor, and avoid short circuit of stator coil again.
(5) stator coil circuit breaking treatment method is to check stator coil circuit breaking point and repair stator winding of submersible electric pump.At the same time, check the cause of stator coil breaking, eliminate the fault of submersible motor and avoid stator coil breaking again.
(6) too small or too long cable pressure drop, resulting in the submersible electric pump voltage too low, unable to start.The treatment method is to replace the cable according to the reasonable choice of the cable and reduce the cable voltage drop.When the submersible electric pump is far away from the power supply, the cable is longer and the voltage drop is too large, the cable section should be thickened appropriately.If the cable length is doubled, the cable cross section should also be doubled.In this way, the starting voltage of the submersible electric pump can be increased and the submersible electric pump can be started easily.
(7) the guide bearing and shaft clearance are too small, and the clearance between the guide bearing and the shaft of the submersible electric pump is too small, so it is easy to generate axle suspension during operation. The treatment method is to repair or replace the guide bearing.
(8) if the inner cavity of the water-filled submersible motor is not adequately filled with water, the axle-hugging phenomenon will occur. The treatment method is to repair or replace the damaged bearings. Meanwhile, for the water-filled submersible electric pump, the inner cavity should be fully filled with water.
(9) placed a long time after the water pump using the impeller and mouth ring parts, corrosion, especially to the guide vane type submersible electric pump treatment method is to disassemble the pump on diversion shell, clean up the rust spot, to rotate the submersible electric pump can be flexible.