Analysis on the Causes of Overload and Heating of Submersible Pump Motor
What are the main reasons for the overload and heating of the submersible pump motor?
1. When the submersible pump pumps mud, the overload caused by the increase of medium density. The measured medium density is greater than 1.3, even reaching 1.5-1.6; while the motor power richness factor is relatively small (generally 1.05-1.2).
2. Mud and sand accumulate in the pump body, and the impeller is overloaded by braking, and the motor is almost running in a locked state.
3. The gap between the rotor shaft hole and the gap between the impeller mouth ring is filled with sand and the shaft is braked to cause overload.
4. Individual manufacturers artificially reduce motor power in order to lower prices in the competition.
5. In the absence of laws and regulations, the industry's unified mining submersible pump motor anti-overload measurement standards, so that there is no standard basis in market competition.
