Home / Standards / GB/T 7409.1-2008 GB/T 7409.1-2008 Abolished Excitation systems for synchronous electrical machines - Definitions 同步电机励磁系统 定义 Standard Type GBT ICS 29.160.20 CCS K21 Status 废止 Issue Date 2008-06-18 Implementation 2009-03-01 Responsible Dept 中国电器工业协会 Drafting Unit 中国电器工业协会