Liaocheng automotive bearings, Liaocheng slewing bearings 011.45.1800.001

Liaocheng automotive bearings, Liaocheng slewing bearings... 'High-voltage fan motors in industry often burn out, mainly due to common faults during the use of high-voltage fans. The main causes of motor burnout are: motor phase loss, motor slewing bearing overload operation, mechanical failure, etc.
' According to the statistics of the slewing bearing editor, the faults of the three-phase asynchronous motors used in production during operation are electrical faults due to winding burnout, and mechanical and other faults. Specifically, the reasons are: winding burnout. Most of them are phase loss operation or overload operation, winding grounding and winding phase or inter-turn short circuit. (During star operation, two-phase windings will be burned, and during delta operation, one-phase winding will be burned).
' Secondly, there are mechanical reasons such as stator and rotor friction (motor sweeping), broken bearings, lack of oil and falling apart (the motor shows that a group of wire packages are broken, not black, and the motor is burned out). However, the burning of the high-voltage blower motor due to electrical reasons is the most common, and it is also quite complicated. Some customers often make some excessive and unreasonable demands in order to shirk responsibility and use the warranty policy of Dongshan Technology's high-pressure blower as an excuse. In order to help the sales staff , to identify the real cause of high-voltage fan motor burnout, I will focus on analyzing the causes of motor winding burnout from an electrical perspective, and propose corresponding treatment methods.
' 1. Phase loss operation
' .Fault phenomenon
' The motor cannot start. Even if it can be started without load, the speed slowly rises and there is a buzzing sound. The motor smokes and heats up, accompanied by There is a burning smell.
' .Inspection results
' Remove the motor end cover and you can see that the /3 or /3 polar phase windings at the end of the winding are burnt or turned into dark brown.
' .Causes of faults and treatment methods
' The fuse circuit of the motor power supply circuit has poor contact or is mechanically damaged, causing a certain phase fuse to blow out.
'The three-phase fuses in the motor power supply circuit have different specifications, and the fuse with a small capacity is blown out. The fuse should be replaced with a fuse of the same specifications according to the power of the motor.
'The switches (isolating switches, rubber cover switches, etc.) and contactors in the motor power supply circuit are in poor contact (burned or loose). Repair and adjust the dynamic and static contacts to ensure good contact.
' A certain phase of the line is missing. Find the broken wire and connect it firmly.
' There is a weak solder between the motor winding wires, resulting in poor contact. Carefully check the motor winding connecting wires and weld them securely. 3, :-- -Mr. Ding
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