Before the start of preparation and checking

1,electric and examine whether the boot device grounding is reliable and complete,wiring is correct and in good condition.2,check the motor nameplate is shown in the voltage,frequency and power supply voltage and frequency.3,the newly installed or discontinued for a long time before starting the

www.facebook.com/guohong.trading motor windings should check relative phase,the relatively insulation resistance.Insulation in the group should be greater than 0.5 ohms,if lower than this value,should be the winding drying.4,should check the collector ring on the wound rotor on the brush device can work normally,brush pressure is in line with the requirements.

5,check whether the motor rotation is flexible,whether within the sliding bearing oil reaches the oil level.6,check whether the rated current of fuse used motor meets the requirements.7,check stator winding machinethe motor and installation bolt fastening bolt are on tight.After the above checks all meet the requirements,can start the motor.Motor starts,no-load running for 30 minutes,observe whether there are abnormal phenomena,such as noise,vibration,fever found abnormal situation,should take measures to stay is eliminated,can be put into operation.When start the wound motor,should will start the rheostat connected to the rotor circuits.For motor with brush lifting mechanism,should put down the brush,and disconnect short circuit device,ac alternators 220v close the stator circuit switch,pull (rheostat.When the motor is close to the rated speed,brush,close the short circuit device,motor start over.