What are the reasons for the motor of submersible sewage pump to burn out?

The submersible sewage pump can tear and cut off the long fibers, bags, belts, grass, cloth and other substances in the sewage, and then discharge smoothly. The main reasons for the failure of the submersible sewage pump due to overload tripping or causing the customized winding of the submersible sewage pump to burn out are as follows:

1. Submersible sewage pump factory problems due to the quality of submersible sewage pump manufacturing and repair caused by submersible sewage pump overload, so that the stator winding heating burned out there are three reasons.

1) The aluminum of the cage cast aluminum rotor is not good or the bar is broken during the aluminum pouring process, which will cause the start-up of the submersible sewage pump. Even after starting, the speed of the submersible sewage pump can not reach the rated speed, and the operating current of the submersible sewage pump is greater than the rated current, and the stator windings will overheat. At this time, if the rotor is taken out and observed, the stator core notch will have a burn mark.

2) Due to the large and uneven air gap between the fixed and rotor of the submersible sewage pump, and the uneven punching after the stacking of the iron core, the no-load current of the submersible sewage pump is too large and the iron loss increases. Some submersible sewage pumps use fire to remove the stator winding during repair, such as the fire temperature is too high, the time is too long, the insulation layer of the core punch is damaged, the magnetic permeability of the core punch is reduced, and the core loss and no-load current of the submersible pump are increased. Submersible sewage pump idling not long time, the stator winding will be hot, if continue to use, the stator winding will burn out.

3) Because the parameters of the stator winding after rewinding do not meet the original design requirements, the number of turns and wire diameter are different, resulting in high temperature rise of the stator winding of the submersible sewage pump and burn out.

2. When purchasing submersible sewage pump, the selected model does not select the correct and actual use of low lift, the selected submersible sewage pump's lift is too high, and the working conditions do not meet the scope of use of the selected submersible sewage pump.

3. The power supply voltage used in the field is unstable, especially in the rural areas, where the voltage in many places can not reach the standard voltage, resulting in a larger increase in the current in the stator winding of the pump motor, resulting in more stator winding temperature increases to burn the motor.

4, submersible sewage pump mechanical failure submersible sewage pump bearings are seriously damaged, stator and rotor phase friction "sweep" or pump body is blocked by debris impeller stuck and other mechanical failures will cause the submersible sewage pump is always overloaded trip.

Submersible sewage pumps are especially suitable for transporting liquids containing hard solids, fibers and liquids that are particularly dirty, sticky and slippery. It can work under the liquid, so it can be installed directly in the sewage tank, without the need to build a special pump room for installing pumps and machines.

The above is the Shandong Changrun Wisdom (submersible sewage pump manufacturers) summary of the specific reasons for the submersible sewage pump motor burn out, have any questions and suggestions welcome to consult the official hotline, there are engineers one-on-one service!