The lack of phase operation of the motor is the frequent motor failure we encounter in the production process.Torque motormanufacturerWhen the motor has a phase fault, it is often accompanied by an increase in vibration, and the winding temperature rises rapidly, and the speed of the motor decreases significantly at this time, and it can not reach the rated speed.

       todayTorque motor manufacturersWith the star connection missing phase, triangle connection missing phase, to simply tell about when the three-phase motor has the problem of missing phase, is a phase winding burned or two phase burned problem.

       When the motor uses the star connection method, at this time if there is a lack of a phase, then there will be a two-phase winding series to bear the voltage, and the other phase winding does not bear the voltage, in this case is the two-phase winding burned, the other phase is intact; If only the other two phases of the winding are energized, then it is equivalent to the spatial position difference120°The electric Angle is connected in series to form a single-phase winding, so that the burned winding must be two-phase, and the winding of the other phase is intact, but the problem of phase to phase or ground fault cannot be excluded.

       If the triangular connection method is used, then when a phase is missing, one phase winding will be applied by a separate voltage, and the other two-phase winding series after the voltage is the same, then the current passed by one phase is twice the current of the other two phases;Torque motor manufacturers saidSuch a phase winding will burn out in a short period of time due to excessive current. But if you have two different phases, so does the reactance value2Times the relationship, the circulation between each other is serious, then the chance of being burned is very large, there may be three phases burned.

       Torque motor manufacturersReminder: When the motor is out of phase, the motor in operation stops immediately, and the motor in the stopped state cannot be started, so the motor itself does not have much impact.

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