Home / Standards / GB/T 12669-2012 GB/T 12669-2012 Active General specification for cascade speed control assembly with semiconductor converter 半导体变流串级调速装置总技术条件 Standard Type GBT ICS 29.160.30 CCS K62 Status 现行 Issue Date 2012-06-29 Implementation 2012-11-01 Responsible Dept 中国电器工业协会 Drafting Unit 中国电器工业协会