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What faults will the explosion-proof motor encounter when it is used? How to solve?

2019-08-22 17:50:14 點擊數:270
What faults will the explosion-proof motor encounter when it is used? How to solve?
Explosion-proof motors sometimes encounter some faults when they are used, so how to solve various faults? Below we look at the specific method.
1. Fault phenomenon: The explosion-proof motor can't start, and there is no sound.
Cause: 1 The fuse is blown. 2 The starter is turned off. 3 The power supply has no power.
2, the phenomenon of failure: explosion-proof motor can not start, there is a loud noise.
Cause: 1 The power line is disconnected in one phase, or the fuse has a phase blown, or the motor has a phase winding broken. 2 The air gap between the stator and the rotor is abnormal, causing the stator to collide with the rotor. 3 bearing damage. 4 was driven by mechanical jam.
What faults will the explosion-proof motor encounter when it is used? How to solve?
Explosion-proof motors
3. Fault phenomenon: The fuse is blown when the motor starts.
Reason: 1 The stator coils are connected in reverse. 2 The stator coil is shorted or grounded. 3 bearing damage. 4 The drive belt is too tight. 5 was driven by mechanical jam. 6 Misoperation during starting.
4. Fault phenomenon: The motor speed is lower after starting the motor.
Cause: 1 The power supply voltage is too low. 2 Connect the delta-wired motor to a star shape. 3 stator coil short circuit. 4 The short circuit of the rotor, the cage is broken or open. 5 The motor is overloaded.
5. Fault phenomenon: The motor temperature is too high, but the current does not exceed the rated value.
Cause: 1 The ambient temperature is too high. 2 The motor air duct is blocked. 3 motor sludge, too much dust affects heat dissipation.
6. Fault phenomenon: Explosion-proof motor has an explosion sound during operation.
Cause: 1 The coil is temporarily grounded. 2 The coil is temporarily shorted.

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