New criteria suitable for overcurrent protection of highvoltage motor

Huadian Technology ›› 2012, Vol. 34 ›› Issue (12): 6-8.

• 研究与开发 • Previous Articles Next Articles

New criteria suitable for overcurrent protection of highvoltage motor

YU Jiandong

Nanjing SAC Metso Control System Company Limited，Nanjing 210061, China

Received:1900-01-01 Revised:1900-01-01 Online:2012-12-25 Published:2012-12-25

Abstract

Abstract: The overcurrent protection adopted in domestic motor protection at present was introduced, and it is considered that the criteria of the protection can not meet the requirement of user safety production. According to the analysis of the motor current characteristics, a new overcurrent protection logic criterion with negative sequence current latch was proposed and verified by practical example.

Key words: motor, current characteristics, negative-sequence current, over-current protection, criterion

YU Jiandong. New criteria suitable for overcurrent protection of highvoltage motor[J]. Huadian Technology, 2012, 34(12): 6-8.

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New criteria suitable for overcurrent protection of highvoltage motor

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