Symptom: submersible pump running pump head and flow for the rated conditions, but the ammeter pointer exceeds the rated current of the motor, resulting in increased power consumption.
Submersible pump power consumption is mainly due to mechanical problems. If the newly installed submersible pump coupling is improperly assembled, that is, the axis of the pump is not on the same line, the impeller sweeps the pump, which will increase the current when the submersible pump is running and reassemble the submersible pump. Normal operation of the submersible pump, motor bearings and thrust bearing wear; pump bearings and impeller wear; motor rotor sweep chamber.
These will increase the mechanical loss of submersible pumps, resulting in increased current and consumption of electrical power. Submersible pump should be used for a certain period of time to carry out maintenance and replacement of wearing parts.
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