Electrifying mode of three-phase asynchronous motor winding
The electrified form of the winding of the three-phase asynchronous motor. When the three-phase asynchronous stepping motor is a pair of magnetic poles, the one-phase coil group under the above-mentioned pair of magnetic poles is the one-phase winding in the three-phase winding of the motor stator.
However, when the motor is a multi-pair magnetic pole motor, the coil group belonging to the same phase under each pair of magnetic poles should be connected in series or in parallel according to requirements, so as to form a one-phase winding in the three-phase winding of the Motor Stator-Phase winding.
Not only the newly purchased stepping motor, it needs to be thoroughly inspected before use. For the motor that has been deactivated for a long time, everyone needs to do a comprehensive inspection first. After the inspection confirms that there is no problem, to be able to start and use.
Among them, according to the inspection required for motors that have been stopped for a long time, in addition to requiring everyone to check and confirm whether there is any damage to the motor structure, it is mainly necessary for everyone to check the insulation resistance between windings and between windings to ground.
Whether it is a new stepping motor or a stepping motor that has been stopped for a long time, once there is a problem in the insulation resistance between the windings and the winding to the ground, there will be a safety hazard, when using the motor in this state, there will be potential safety hazards to the motor structure, the surrounding environment and personnel, and safety problems will easily occur.
Therefore, when you need to use a motor that has been stopped for a long time, first check the insulation resistance between the windings and the winding to the ground.
Specifically, judging from the insulation resistance between windings and winding to ground of stepping motors, 500V insulation resistance meter should be used for motors below 500 V, if it is 500-
For 1000V motors, a 1000V insulation resistance meter is required, and for motors above 1000 V, a 2500V insulation resistance meter is required.
At the same time, ensure that the insulation resistance working voltage per kilovolt is 1 MΩ.
Above, at the same time, it should be noted that the measurement in this aspect should be carried out under the state of motor cooling.
For more knowledge of linear stepping motor parameters, please consult Wang Gong QQ: 3100287901 for relevant reading: Determination of angle accuracy of stepping motor, the stepping motor controlled by PCC has great practical value. TAG three-phase asynchronous motor