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Lan Shifa (Gutianxi Hydropower Plant,352258,Gutian,China)  
Though introducing the characteristics and performance of PTC resistance,the author finds out its R T switching feature and clarify the action application in field of lighting protection of communication line and powerful overcurrent protection.
【CateGory Index】: TN371
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2 GUO Hui LU Jianguo Hebei University of Technology (300130) XUE Qi Tianjin University (300072);A New Method to Achieve Arcless Interruptions in AC Contactor[J];Low Voltage Apparatus;2002-04
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1 He kaihua (Military Office in Xiangtan Electric Machine Group Co.Ltd, Hunan 411101, China);Approach to Improve Operation Performance of Field Discharge Switch[J];Marine Electric & Electric Technology;2003-06
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