pilot wire protection system 导引线保护系统

pilot wire relaying protection 引示电驿保护

compensated pilot wire protection system 补偿引线保护系统

pilot wire protection 带辅助导线的纵联保护装置

compensated pilot wire protection 补偿式引线保护

circulating current type pilot-wire protection 电流循

pilot-wire protection 带辅助导线的纵联保护

communication-wire carrier-pilot protection 通信线搬送継电方式

voltage opposite type pilot-wire protection 电圧反向式表示线継电方式