Home / Standards / GB/T 21407-2015 GB/T 21407-2015 Active Doubly fed variable speed constant frequency wind turbine 双馈式变速恒频风力发电机组 Standard Type GBT ICS 27.180 CCS F11 Status 现行 Issue Date 2015-10-09 Implementation 2016-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A