The motor as the equipment transfer the electrical energy into mechanical energy, playing an important role in the working process of the electric crane in normal operation. Then, what are the common causes of motor failures?
Motor consists of a stator frame, winding and insulation material, rotor, bearings on the both ends, end cover and other components, which is relatively simple. The causes of motor failures mainly include following ones. First, power off phase, voltage or frequency is wrong. Second is the problem of winding short circuit, open circuit and grounding. Third may be that bearings are dysfunctional. Fourth, bad heat dissipation caused by the dirty internal and external parts or the thick external paint may lead to the motor failure. In addition, bad mechanical equipment, long-term high load operation and the high ambient temperature also have influence on the motor’s performance.
In fact, if we regularly check carefully whether the motor condition is good or not, the vast majority of failure can be prevented and avoided. This is not only conducive to the protection of the normal operation of the motor, but also advantageous to reduce the loss of the company spare parts and repair costs.