How to solve the main motor failure of aluminum-plastic packaging machine?
Treatment method:(1) check the power line, the motor lead line, fuse, switch each pair of contacts, find the open circuit position, to be ruled out;(2) after unloading or half no-load start;(3) check the dragging machine to remove the trouble;(4) check the joint of the contacts of brush, slip ring and starting resistance;(5) re judge the end and end of the three-phase, and check whether the three-phase winding has the line and the short circuit.Motor starting difficult, plus rated load, the speed is low.
(3) stuck by a dragging machine;(4) the rotor circuit of the wound motor is opened to break;(5) the head position of the stator is connected wrongly, or there is a break or a short circuit.
After the opportunity is switched on, the motor cannot start, but there is a buzzPossible causes:(1) the power supply is not all connected to single phase starting;(2) motor overload;
Possible causes:(1) the power supply voltage is low;(2) the original angle connection was mistakenly connected to the star connection;(3) squirrel cage rotor cage end loose, loose or broken.Treatment method:(1) increasing voltage;(2) check the nameplate wiring method, correct the stator winding connection mode;(3) after examination and symptomatic treatment.After the motor starts, the temperature exceeds the standard of temperature rise or smoke
