Three-phase asynchronous motorThe starting process is generally one tenth to a few seconds, and the motor speed gradually increases to the rated speed after the power is turned on. So what should we pay attention to when starting up? Here, Senli Motor Xiaobian will explain it to youThree-phase asynchronous motor Precautions when starting:
1. YSSeries three-phase asynchronous motorAll are full voltage starting, but it should be noted that the full voltage starting time is about5-7Double the rated current, but should not be carried out frequently.
2.When the power supply phase sequenceA,B,CSeparate wire posts with patch boardsUl,V1,W1In response, the motor's steering is viewed clockwise from the spindle end.
3.The motor should generally have a thermal protection device, and adjust the setting value of the protection device according to the rated current of the motor.
4.After closing, if the motor does not turn, it should be quickly and decisively pulled to avoid burning the motor.5.After the motor starts, pay attention to the transmission device, production machinery and line voltage and current, if there is an abnormal phenomenon, it should be stopped immediately to find out the fault and eliminate it before re-closing and starting.
6.According to the technical requirements of the motor, the number of continuous motor starts is limited, and the general no-load continuous start does not exceed3Second, the motor runs to a hot state for a long time, and starts after stopping, which shall not exceed2Time.
7.When several motors are powered by the same transformer, they cannot be started at the same time, and should be started one by one from large to small.
8.When the frequency of the power supply deviates from the value on the nameplate±1%Or the voltage deviation exceeds―10%When the motor cannot guarantee continuous output power, the continuous operation of the motor is not allowed to overload1.05 More than double.
Above isThree-phase asynchronous motorThings to pay attention to when starting
