GOST R 54127-7-2012 (2019)
小于1000 V交流和1500 V直流的低压配电系统.电气安全性.防护措施的测试、测量或监控用设备.第7部分.相序
Low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 7. Phase sequence