Q: No-load motor can't start

A: Possible reasons Check or calibration methods 1.Circuit broken wires (one of the three is the root) 2.When the child three-phase winding of the a phase breakers("Y" type of connection) 3.The power supply voltage and frequency is wrong Check the power supply voltage or individual connection. Check the fuse,feeders of current and each phase of the winding resistance. Check voltage and frequency.

Q: Motor load in cannot begin atlow load or no-load to start when,but in load increase speed that are even stop to plunge

A: Possible reasons Check or calibration methods 1.The low voltage power supply 2.The group turns around the son between short circuit 3.The stator three-phase winding out-of-phase break line("△"then method) 4.Overload Check the line voltage; Check each phase windings and each phase no-load current; Check each phase winging resistance; Check the load

Q: Motor stay in low rotation speed

A: Possible reasons Check or calibration methods 1. A connect the stator winding,motor hair crosstalk 2.The rotor ring and guide bar among fracture Check feeders current and lead wire mark; Check short-circuit current

Q: Stator overheating

A: Possible reasons Check or calibration methods 1.Feeders three roots there was a break or stator winding a phase open circuit 2.The power supply voltage too big or too low 3.Overload 4.Same stator circle or short circuit 5.And ventilated bad Check the fuse,line voltage and current between wire; Check the current in a feeders; Check the stator alternate with and ground insulation resistance; Check the winding resistance and stable way

Q: Bearing overheating

A: Possible reasons Check or calibration methods 1.The assembly wrong 2.The motor shaft and the dragging is not parallel axis 3.No lubricating oil,oil impurities or oily bad there 4.Belts tight 5.Don't balance of magnetic big suction Check whether the rotor to trun; Correction two axis balance; Use the car wash oil changing; The belt or loose move feet; Check the air gap eccentric degrees

Q: When feeder insurance facilities trip

A: Possible reasons Check or calibration methods 1.A connect the stator winding 2.Put a "Y" shall meet type stator windings to become "△" 2.Winding base to short circuit or alternate with shor circuit Check mark and lead wire by law; Check mark and lead wire by law; Check the phase windings of the insulation and the same base of insulation

Q: Mechanical vibration

A: Possible reasons Check or calibration methods 1.Relet not only in balance quite a low speed don't vibration 2.The axial moving there 3.Transmission belt joint answered the bad Check the balance situation; Chcek the clearance of bearing,and to make adjustments. To meet the belt; Check the pulley