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6inch submersible motor supplier analyzes the consequences of wrong submersible motor selection

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6inch submersible motor supplier analyzes the consequences of wrong submersible motor selection

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  • Time of issue:2022-08-01 08:53
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(Summary description)The 6inch submersible motor supplier found that the submersible pump motor was selected incorrectly: the power is too small, the insulation grade is not good (the frequency converter requires F grade or above), etc.

6inch submersible motor supplier analyzes the consequences of wrong submersible motor selection

(Summary description)The 6inch submersible motor supplier found that the submersible pump motor was selected incorrectly: the power is too small, the insulation grade is not good (the frequency converter requires F grade or above), etc.

Information

  The 6inch submersible motor supplier found that the submersible pump motor was selected incorrectly: the power is too small, the insulation grade is not good (the frequency converter requires F grade or above), etc.

6inch submersible motor

  The supplier of the 6inch submersible motor believes that the inter-turn of the phase winding causes the three-phase current imbalance, or there is a short circuit between the windings, which increases the phase current, causes the winding to heat up, and causes the motor to overheat. The stator winding is connected incorrectly, such as the angular connection is wrongly connected to a star connection.

  6inch submersible motor supplier The motor winding insulation is affected by mechanical oscillation, which causes the winding to appear inter-turn slack, insulation cracks and other undesirable phenomena, and the destructive effects continue to accumulate. Thermal expansion and contraction cause the winding to be rubbed, and then accelerate the insulation aging, resulting in carbonization The insulation is destroyed until the winding is burned.

  The 6inch submersible motor supplier found that the submersible pump was operating in the water, and the simple leakage caused power loss and even caused electric shock. If a leakage protector is installed, as long as the leakage current value of the submersible pump exceeds the operating current value of the leakage protector, the leakage protector will cut off the power supply of the submersible pump.

  The 6inch submersible motor supplier believes that the load of the submersible pump is heavier than that of the general pump, and the rated current of the supporting motor is relatively large. Therefore, the selection of the inverter should be based on the rated current of the motor compared to the rated current of the inverter, not just power matching.

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