①The winding machine in the start before use, should check the nameplate, check the detailed circuit and starting equipment and other related device, each part of the circuit are properly connected, grounding is reliable, the fuse is not in good condition and in conformity with the provisions,switch, contactor is good, circuit breaker, short circuit fault,will cause damage to the motor.

②The winding machine connected to the power supply before,should check the insulation condition, if the insulation resistance is insufficient, should be dry processing, check insulation of rotor winding, calibration of carbon brush spring pressure, remove the slip rings and carbon brushes

The dirt on the surface of.

③ winding machine before use, should do first rotation direction suddenly seized load operation, inspection winding machine is correct, to change the steering, just an arbitrary two-phase wiring winding machine can be reversed. While winding machine is functioning properly observed, with or without abnormal noise or vibration, etc., to be proved after all normal, only with a load start.

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