公开(公告)号：EP2830181B1

公开(公告)日：2018-06-06

申请号：EP14174805

申请日：2014-06-27

申请人： BOEING CO

发明人： HASENOEHRL THOMAS R ,  PATERSON JOHN T ,  WHITNEY MARVIN ,  CALLAHAN KEVIN S ,  KHOSRAVANI SHAHRIAR

IPC分类号： H02H3/08 ,  H02H9/04

CPC分类号： H02G13/60 ,  H02G13/80 ,  H02H3/08 ,  H02H9/041 ,  H02H9/042 ,  H02H9/043

摘要： A fault-tolerant self-indicating surge protector system (500) and methods (800, 900) are presented. An unwanted surge of electrical energy induced by a lightning strike is directed away from a sensitive electrical or electronic component, and the unwanted surge of electrical energy is directed through series connected pairs of varistors. A voltage signal is extracted from a center tap point between the series connected pairs of the varistors, and the voltage signal is monitored for a health of the varistors. A high impedance in a varistor among the varistors is provided for a low voltage across the varistor, and a low impedance in the varistor is provided and the unwanted surge of electrical energy is diverted through the varistor in response to a high voltage across the varistor.