Draft Document - 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 7: Phase sequence (IEC 85/256/CD:2004)
文件草稿交流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7部分:相序(IEC 85/256/CD:2004)