Three-phase asynchronous motor is the production of the most widely used electrical equipment, its role is to convert electrical energy into mechanical energy, the electric energy consumed by the motor in the enterprise accounts for the amount of energy consumption60%Above, the structure is simple, easy to start, small size, reliable and durable work, easy to maintain and overhaul.
Several common faults and treatment methods of three-phase asynchronous motor:
First, the motor stator compressive strength is poor
Three-phase asynchronous motorThe main reasons for the poor compressive strength of the stator are mostly due to the defects in winding insulation, such as: the break of the insulating sleeve of the lead wire, the wound end, the damage and aging of the insulation between phases, and the motor is damaged by moisture, which causes the winding insulation to be broken down and burn the motor.
Second, the motor no-load current is too large
The no-load current of the motor is related to the design permeability material and manufacturing level, and also to the power and the number of poles of the motor. Under normal circumstances, three-phase asynchronous motor no-load current and full load current have a certain proportional relationship, power Small, the number of poles, no-load current and full load current ratio is large.
For the new motor or the motor after changing the winding, it is necessary to test the no-load current. If the no-load current of the motor exceeds the normal range, it indicates that there is a problem in the motor, and it is necessary to find out the cause for treatment.
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