Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems (IEC 61557-13:2011); German version EN 61557-13:2011
交流1000V和直流1500V以下低压配电系统的电气安全保护措施的试验、测量或监测设备第13部分:配电系统泄漏电流测量用手持式和手动电流夹和传感器