Home / Standards / GB/T 34871-2017 GB/T 34871-2017 Active Inspection specification of protection relay in smart substationt 智能变电站继电保护检验测试规范 Standard Type GBT ICS 29.240 CCS K45 Status 现行 Issue Date 2017-11-01 Implementation 2018-05-01 Responsible Dept 中国电力企业联合会 Drafting Unit N/A