The Protection System Design of Leakage, Undervoltage and Overvoltage for Electromagnetic Starter in Coal Mine

Hong Wei Ma; Wang Xing; Qing Hua Mao; Yu Liu

doi:10.4028/www.scientific.net/AMR.1049-1050.720

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1049-1050The Protection System Design of Leakage,...

The Protection System Design of Leakage, Undervoltage and Overvoltage for Electromagnetic Starter in Coal Mine

Abstract:

For the problem of leakage, undervoltage and overvoltage fault protection of electromagnetic starter with supply voltage of 660 V and rated current of 200A, a leakage, undervoltage and overvoltage protective system based on PLC LM3108K was designed. This system uses voltage transformer to detect three-phase AC voltage. It protects undervoltage and overvoltage fault by judging effective value of three-phase voltage, protects leakage fault of main switch for electromagnetic starter by additional DC power and protects leakage fault of branch switch by using zero-sequence power direction. This system has good protection functions for leakage, overvoltage and undervoltage faults of electromagnetic starter in coal mine.

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Periodical:

Advanced Materials Research (Volumes 1049-1050)

Pages:

720-725

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1049-1050.720

Citation:

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Online since:

October 2014

Authors:

Hong Wei Ma*, Wang Xing, Qing Hua Mao, Yu Liu

Keywords:

Additional DC, Electromagnetic Starter, Leakage Protection, Overvoltage Protection, Undervoltage Protection, Zero-Sequence Power Direction

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* - Corresponding Author

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