The current of the flour machine at no load is very large, which is a problem of the motor. One is that the partial coil has a partial short circuit, and the other is that the number of turns of the winding and the parallel path are not equal.

If the no-load current is large, but the no-load loss is normal, it is caused by excessive motor air gap or magnetic circuit saturation of the flour machinery; if the no-load current is large, the no-load loss is also large, indicating that the iron loss of the motor is too large. .

If both no-load current and no-load loss are large, the stator winding DC resistance is appropriate. This may be because the core quality does not meet the requirements, the stator and rotor cores are not aligned due to the assembly failure, or the positioning dimensions are not met.

The reason for the no-load current is normal but the no-load loss is the poor quality of the silicon steel sheet; the length of the iron core is insufficient or the stacking is not real, resulting in insufficient finite length; the small flour machinery is misused with a large fan or a fan with more blades; due to improper assembly The rotor is not rotating or the bearing quality is not good, and too much grease is added to the bearing to make the machine consume too much.

To avoid the phenomenon of large no-load current in the flour machinery, it is necessary to check the equipment to find out the cause of this situation and prescribe the right medicine.