Four main reasons for overheating of 500LC-20 vertical long axis pump motor

1, 500LC-20 type vertical long axis pump reasons

Select the power is not matching, small horse cart, the motor over time overload operation, so that the motor temperature is too high; too frequent start, fixed for short-term or intermittent work of the motor work continuously. The starting frequency shall be limited and the heat protection shall be properly chosen.

2, 500LC-20 type vertical long axis pump motor itself reasons

Connection errors, the triangular error connection into a Y shape, the motor temperature rises rapidly; stator winding interturn short circuit, phase short-circuit or local earthing, light motor overheating, severe burn insulation; squirrel cage rotor broken bar or defects, the motor running 1 to 2 hours, the core temperature rapidly rise; failure of ventilation system, should check whether the fan is damaged, the rotation direction is correct, ventilation channel is blocked; bearing wear, eccentric rotor stator and rotor core make sweeping rub a clang, core temperature rises rapidly, serious motor coil burning smoke, even.

3, 500LC-20 type vertical long axis pump power supply reasons

High or low voltage, under specific load, if the voltage range in the rated value + 10% to - 5% outside the motor will cause overheating; power three-phase voltage asymmetry, power supply voltage and three-phase electric unbalance degree is more than 5%, will lead to winding overheating; phase operation experience shows that agricultural motor burned more than 85% due to phase operation, with motor installed open phase protection.

4, the reasons for the work environment

Motor winding winding or dust, oil and other attached to the winding, resulting in insulation reduction. The insulation resistance of the motor should be measured and cleaned and dried. The ambient temperature is too high. When the ambient temperature is above 35 degrees, the temperature of the air inlet is high, the temperature of the motor will be too high, and the working environment should be improved. Such as scaffolding shade. Attention: because of the electric reason, the breakdown, should obtain the professional qualifications certificate electrician maintenance, the half knowledge person can not maintain blindly, prevents the personal injury accident occurrence.