GB/T 17215.221-2021电测量设备(交流)通用要求、试验和试验条件第21部分:费率和负荷控制设备标准
英文:Electricity metering equipment(a.c.)—General requirements, tests and test conditions—Part 21:Tariff and load control ...
英文:Electricity metering equipment(a.c.)—General requirements, tests and test conditions—Part 21:Tariff and load control ...