Home / Standards / GB 39220-2020 GB 39220-2020 Active Limits and monitoring methods of total electric field of DC transmission project 直流输电工程合成电场限值及其监测方法 Standard Type GB ICS 13.280 CCS F73 Status 现行 Issue Date 2020-10-11 Implementation 2020-12-01 Responsible Dept 生态环境部 Drafting Unit N/A