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Motor burn-in judgment standard
Release Date: 2018-01-26

Missing phase

the reason:


Generally it is caused by lack of phase of the power supply (one phase is not supplied with power or insufficient supply voltage) or the contact point of the contactor in the line is not closed, the connection point of the wire is disconnected, the connection is loose or the contact position is oxidized.


feature:


One or two phases (level 4) in the winding are all blackened, the coil is damaged symmetrically, and there are rules

For lack of phase.


overload

the reason:


Generally, the motor runs for a long period of overcurrent, overheating, frequent starting or braking, and the wiring error is also caused (triangular connection to star connection).


feature:


The windings all turn black, and the end bands become discolored and become brittle or even broken.



Interturn

the reason:


Peeling of the enameled wire caused by the motor manufacturing process.


feature:


The winding is partially blown. Usually, the inner cavity of the motor is clean, and there is only one explosion point.



Alternate

the reason:


The interphase paper is not in place, or the interphase paper (sleeve) is damaged.


feature:


The two phases of the motor are burned.



Ground strike


the reason:


The creepage distance between the coil and the end cap base is not enough.


feature:


There are burnt marks between the coil and the end cap or end cap.




Jiangsu Xingguang Power Generation Equipment Co., Ltd. (Shandong Xingguang Generator)

Address: Headquarters: No. 2 Xingguang Road, Guxi Town, Taixing City, Jiangsu Province Branch: 3-1-2301, Hengda Yayuan, Qingdao West Road, Yinan District, Jinan City, Shandong Province

Phone: 18815316699

Record number: Su ICP No. 13060714

Technical Support: Jingchuang Network