Home / Standards / GB/T 21973-2021 GB/T 21973-2021 Active YZR3 series wound-rotor three-phase induction motors for crane and metallurgical applications—Technical specification YZR3系列起重及冶金用绕线转子三相异步电动机 技术条件 Standard Type GBT ICS 29.160.30 CCS K 26 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A