Winding short-circuit consist primarily of inter-turn short circuit, coil and coil short circuit, the electrode group a short circuit, phase-to-phase short-circuit.

    Winding short-circuit fault causes and treatment:

    Reasons: 1, improper embedded line, magnet wire film damage. 2 winding is damp, the motor power supply voltage is insulation breakdown. 3, long-term overload current exceeds the rated current, the insulation aging, loses its insulating effect. 4, white or interlayer insulation pad. 5, improper handling or lack of apparatus, the end winding insulation damage.

    Approach: 1, the insulating material separated by a short-circuit, re-dressing, replace the coil.

    Winding circuit is divided into the coil connection at the circuit, the lead wire break at the cage rotor bars and end rings junction circuit.

    Reasons: 1, by mechanical force, joints, poor welding, the end winding banding is not strong, insulation wear

    Approach: 1, the circuit at the weld repair insulation, replace the windings.