Home / Standards / GB/T 33591-2017 GB/T 33591-2017 Active Technical specification of time synchronism system and equipment in smart substation 智能变电站时间同步系统及设备技术规范 Standard Type GBT ICS 29.020 CCS F21 Status 现行 Issue Date 2017-05-12 Implementation 2017-12-01 Responsible Dept 中国电力企业联合会 Drafting Unit N/A