The main reason of voltage instability of horizontal multistage pump

The voltage instability of horizontal multistage pump may be caused by many reasons such as power supply problems, pump structure characteristics, working environment factors and improper operation and maintenance.

1) Component failure

From the structural characteristics of the multistage pump itself, the pump is composed of a plurality of impeller and guide vane, each impeller needs a stable voltage to ensure normal operation. If a component fails or wears out, it may affect the operational stability of the entire pump, resulting in voltage instability.

2) Influence of working environment

The working environment of the multistage pump may also affect the voltage stability, if the working environment temperature is too high or too low, it will affect the heat dissipation effect of the motor, resulting in the motor temperature rise, and then affect the voltage stability; Factors such as humidity and dust in the environment may also cause corrosion or pollution to the electrical equipment, thus affecting the stability of the voltage.

3) The power supply is unstable

If there are interference factors such as harmonics and voltage fluctuations in the power grid, or the power grid capacity is insufficient, it may cause the voltage of the pump to be unstable, in this case, the multistage pump may not work properly, and may even be damaged.

4) The electrical system of the pump itself

The motor winding of the multistage pump may have short circuit, open circuit or poor contact, resulting in abnormal operation of the motor, which affects the stability of the voltage, and the control system of the pump, such as frequency converter, controller, etc., if there is a fault or improper parameter setting, it may also lead to voltage instability.

5) Improper operation and maintenance

Frequent starting and stopping of the pump, overload operation or long-term continuous operation may cause damage to the motor, thus affecting the stability of the voltage, if the lack of regular maintenance and maintenance, it may also lead to the deterioration of the performance of the electrical equipment, and then lead to the problem of voltage instability.