Home / Standards / GB/T 21974-2008 GB/T 21974-2008 Abolished Technical specification for YZRW range of eddy-current braking wound-rotor three-phase induction motors for crane and metallurgical application YZRW系列起重及冶金用涡流制动绕线转子三相异步电动机技术条件 Standard Type GBT ICS 29.160.30 CCS K26 Status 废止 Issue Date 2008-06-13 Implementation 2009-03-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A