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6-inch submersible motor factory analyzes the consequences of wrong submersible motor selection

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6-inch submersible motor factory analyzes the consequences of wrong submersible motor selection

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  • Time of issue:2022-05-26 09:52
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(Summary description)When the 6-inch submersible motor factory thinks that the submersible pump motor is selected incorrectly: the power is too small, the insulation grade is not good (the frequency converter requires F grade or above), etc. The inter-turn open circuit of the phase winding causes the three-phase current to be unbalanced, 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.

6-inch submersible motor factory analyzes the consequences of wrong submersible motor selection

(Summary description)When the 6-inch submersible motor factory thinks that the submersible pump motor is selected incorrectly: the power is too small, the insulation grade is not good (the frequency converter requires F grade or above), etc. The inter-turn open circuit of the phase winding causes the three-phase current to be unbalanced, 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.

Information

  When the 6-inch submersible motor factory thinks that the submersible pump motor is selected incorrectly: the power is too small, the insulation grade is not good (the frequency converter requires F grade or above), etc. The inter-turn open circuit of the phase winding causes the three-phase current to be unbalanced, 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.

6inch submersible motor

  The 6-inch submersible motor factory found that the insulation of the motor winding is subjected to mechanical oscillation, which causes the winding to appear inter-turn slack, insulation cracks and other undesirable phenomena, and the destructive effects continue to accumulate. The insulation is destroyed until the winding is burned.

  The 6-inch submersible motor factory recommends that the submersible pump adopts the requirements of the national mandatory standard for maintenance and grounding. As long as the grounding is adopted, the personal safety during use can be ensured.

  When the submersible pump works in the water, the simple leakage of electricity will cause power loss and even cause electric shock. The 6-inch submersible motor factory believes that if a leakage protector is installed, as long as the leakage value of the submersible pump exceeds the operating current value of the leakage protector (generally not exceeding 30 mA), the leakage protector will cut off the power supply of the submersible pump.

  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 6-inch submersible motor factory recommends that 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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