Home / Standards / GB/T 21968-2008 GB/T 21968-2008 Abolished Technical specification for YBZS range of flame-proof double-speed three-phase induction motors for crane application YBZS系列起重用隔爆型双速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