BS EN 61557-11. 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 11. Effectiveness of residual current monitors (RCMs) Type A and Type B in TT, TN and IT systems
BS EN 61557-11 交流1000V和直流1500V以下低压配电系统的电气安全 用于测试、测量或监测保护措施的设备 第11部分 TT、TN和IT系统中A型和B型剩余电流监测器(RCM)的有效性