Home / Standards / GB/T 39853.1-2021 GB/T 39853.1-2021 Active Power quality measurement in power supply systems—Part 1: Power quality instruments (PQI) 供电系统中的电能质量测量 第1部分:电能质量监测设备(PQI) Standard Type GBT ICS 17.220.20 CCS N22 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A