In the process of the development of motor protection, the various failures of the motor is fully discussed. From the principle of the motor fault diagnosis, fault discrimination techniques are analyzed.

In the development of the motor protector, the text of the motor failure of the comprehensive treatment. And on the principle of motor troubleshooting technical problems, a distinguished technical analysis.

In the development electric motor protector process, in the article has carried on the comprehensive elaboration to electric motor each kind of breakdown.And by theory to the electric motor breakdown diagnosis technology, the breakdown distinguished the technology has carried on the analysis.

In the course of development of motor protector, a comprehensive exposition of motor failure. Fault diagnosis technique and principle on motor, fault identification technology for the analysis.

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