Home / Standards / GB/T 33977-2017 GB/T 33977-2017 Active Methods to quantify the steady state, power-frequency electrimagnetic fields generated by HV switchgear assemblies and HV/LV prefabricated substations 高压成套开关设备和高压/低压预装式变电站产生的稳态、工频电磁场的量化方法 Standard Type GBT ICS 29.240.10 CCS K43 Status 现行 Issue Date 2017-07-12 Implementation 2018-02-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A