Submersible Slurry Pump manufacturers in China,6 reasons why the submersible pump trips within a few minutes
Submersible Slurry Pump Mechanical failure
First of all, for mechanical reasons, I think the possibility of bearing lack of oil and impeller jammed by foreign matter is relatively high. When the bearing is short of oil or the impeller is jammed by foreign objects (such as ropes, stones, etc.), the motor is overloaded and the current increases. Then the thermal relay will make the contactor coil de-energize and trip; if there is no thermal relay, the MCB may also trip.
Secondly, it may also be because the water is too shallow and the Submersible Slurry Pump is not completely covered by the water. If the Submersible Slurry Pump is not covered by water, it will not get good heat dissipation, the temperature of the motor will rise, and it may also cause a trip.
Submersible Slurry Pump Electrical fault
1. Short circuit between turns
When the motor coil insulation is broken, it may cause a short circuit between turns (part of the coil is shorted). The short circuit between turns will shorten the effective length of the coil, decrease the impedance, and increase the current, which will cause the air switch to trip.
2. The power cord is too long
Although the subject said that the voltage is normal, it did not specify the voltage at which location.
If the power cord is too long and the line resistance is large, there will be more voltage drops. That is, although the switch terminal voltage is normal, the voltage to the Submersible Slurry Pump is not enough. If the motor voltage is insufficient, the current will rise, which will also cause a trip.
3. The switch is too small
If the rated current of the switch is too small, when the Submersible Slurry Pump runs for a period of time, the switch will trip due to overload. When selecting the switch, you must ensure that the rated current of the switch is greater than the actual current of the submersible pump.
4. Insufficient capacitance
If it is a Submersible Slurry Pump that was used normally before, and it trips after using it for a period of time, it is also possible that the capacitor capacity of the submersible pump is too small. A small capacitor capacity will cause the phase between the main and auxiliary windings of the motor to change, and the rotation force and speed of the motor will decrease, resulting in insufficient power and larger current.