Y series three-phase asynchronous motors should be properly grounded. There is a grounding screw in the bottom right of the junction box. If necessary, the foot of the motor or the flange fixing bolts can be used for grounding. The three-phase asynchronous motor consists of two basic parts: a fixed stator and a rotating rotor. The rotor is installed in the inner cavity of the stator and supported on two end covers by means of bearings. In order to ensure that the rotor can rotate freely in the stator, there is a gap between the stator and the rotor, which is called an air gap.
Moreover, the Y series three-phase asynchronous motor nameplate has the specified star connection and delta connection. In my country, the motor below 3kW adopts the star connection, and the motor above 3kW adopts the delta connection, which cannot be wrongly connected.
The motor should generally be equipped with a fault protection device, such as thermal protection device, motor electronic protector, etc., and the setting value of the protection device should be adjusted according to the current on the motor nameplate. If the motor load is stable, in order to better protect the motor, the setting value of the protection device can be adjusted according to the actual working current of the motor. The actual working current of the motor can be directly measured with a clamp ammeter when the motor is running with a load. When the deviation between the voltage and frequency of the power supply and the value on the nameplate exceeds 5%, the motor cannot guarantee continuous output rated power. Motors that work continuously are not allowed to be overloaded.
Y series three-phase asynchronous motors should not have intermittent or abnormal sound or vibration during no-load or loaded operation, and the bearing temperature should not be too high. The three-phase asynchronous motor consists of two basic parts: a fixed stator and a rotating rotor. The rotor is installed in the inner cavity of the stator and supported on two end covers by means of bearings. In order to ensure that the rotor can rotate freely in the stator, there is a gap between the stator and the rotor, which is called an air gap.
Post time: 2022-02-21
