Home / Standards / GB/T 7409.2-1997 GB/T 7409.2-1997 Excitation system for synchronous machines — Models for power system studies 同步电机励磁系统 电力系统研究用模型 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A