Reasons For Excessive Pump Power Consumption

Jan 13, 2025

If the power safety margin of the motor equipped with the pump is calculated to be sufficient, but the motor heats up due to overload during actual operation, it indicates that the power consumption of the pump is too high. The reasons for high pump power consumption are:

(1) The pump speed is too high;
(2) The specific gravity of the transported liquid exceeds the original design value;
(3) The viscosity of the conveyed liquid is high;
(4) The impeller size is too large;
(5) The resistance of the pipeline system exceeds or falls below the predetermined value;
(6) The head of the pump is too low and the flow rate is too high;
(7) There is friction between rotor parts and stator parts;
(8) Bearing wear or damage;
(9) The mechanical seal exerts excessive pressure on the sealing seat;
(10) Export pipeline rupture;
(11) Pump shaft bending;
(12) Uneven thermal expansion of different parts inside the pump;
(13) The dynamometer is inaccurate;
(14) The pump balancing device is not functioning.