Presumably many equipment manufacturers have encountered the three-phase asynchronous motor burning coil failure, mainly because of overcurrent caused, sometimes the voltage is too high or too low, but also hard coil heat, so we must first check whether the voltage during operation is similar to the rated voltage; Today, Senli Xiaobian will take you to understand the reasons for the current short circuit.

        When the equipment is overloaded, it will make the battery run at the rated current or over-specified current for a long time. Then it is particularly important to emphasize here that the starting current of the three-phase asynchronous motor is rated current3-5Therefore, we should try to avoid starting the equipment with load or full load operation, mainly depending on the rated current of the motor and the matching margin of the normal operating current.

        The heat dissipation of the motor will also cause the motor to burn out. Generally, the motor coil is an air-cooled shell, and the submersible pump is a water-cooled shell. Large motors are mostly empty-Empty heat exchanger, empty-Water heat exchanger cooling. But if we lose the cooling water/Air, so that the coil can not dissipate heat, then it is possible to burn the coil.

        Therefore, if the motor is operating in a humid working environment, before the asynchronous motor starts, we should first check the ground insulation and phase-to-phase insulation of the coil, and the insulation requirements are different for different voltage levels, which can be checked by referring to the relevant national standards. In the operation of the motor should pay attention to waterproof and moisture-proof.

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