1. First remove the burnt coil, then replace it with a new one, and then immerse it in insulating paint for insulation treatment. When removing the winding, the diameter of the conductor must be measured and the number of conductors per turn must be calculated. Span, connection mode, according to the specified requirements, and then it will be fine.

2. Principle: When a three-phase symmetrical alternating current is applied to the three-phase stator winding of the motor, a rotating magnetic field will be generated to cut the rotor winding, thereby generating an induced current in the rotor winding (the rotor winding is a closed path), and the current-carrying rotor conductor will generate an electromagnetic force under the action of the stator rotating magnetic field, thus forming an electromagnetic torque on the motor rotating shaft, driving the motor to rotate, and the motor rotating direction is the same as that of the rotating magnetic field.