What is the reason why the electric hoist can not work normally?

In daily operation, the electric hoist wins with the advantages of simple operation and convenient maintenance. If it fails to work normally, the main reasons are as follows: first, check whether the power fuse is burned out.

What is the reason why the electric hoist can not work normally?
In daily operation, the electric hoist wins with the advantages of simple operation and convenient maintenance. If it fails to work normally, the main reasons are as follows: first, check whether the power fuse is burned out. If one phase is disconnected, the motor is started in single phase, and the starting torque is zero, then the motor cannot rotate, and enough fuses should be replaced. Secondly, the voltage of the power grid may be too low. Because the starting torque is directly proportional to the square of the voltage, the accelerating torque can not overcome the load torque, so the operating speed can not be reached. At this time, the voltage of the power grid should be appropriately increased. Thirdly, there may be short circuit, grounding or open circuit between phases of stator winding. If the winding grounding appears at the outgoing line grounding plate, the junction box shall be opened for inspection. Finally, it is possible that the load is too large or the transmission machinery is faulty. Generally, the power of the motor matched with the electric hoist is reasonable, and overload shall not occur when lifting heavy objects.