digital cable-fault measuring-testing instrument 数字式电缆故障测试仪
ground measuring 接地检测
ground measuring tester 接地测试器
Measuring Fault 计量故障; 故障
DC ground fault 直流接地
DC System Ground Fault 直流接地
detection of ground fault 接地检测
directional ground relay 定向接地继电器
double line to ground fault 双线接地故障
DUT ground relay 被测试装置接地线切断继电器
field winding ground fault 励磁绕组接地
field winding ground fault protection 励磁绕组接地保护; 励磁回路接地保护
Ground Fault 接地故障; 接地; 接地异常; 单相接地; 接地事故
ground fault current interrupt 接地故障电流中断
Ground Fault Detection 接地故障监测
Ground Fault Detection for DC System 直流系统接地检测
ground fault for DC system 直流系统接地故障
ground fault line detection 小电流接地选线; 接地选线
GROUND FAULT LOCATION 接地故障定位