China 'GB/T 21974-2008
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 21974-2008
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
Issued Date:2008-06-13
Implemented Date:2009-03-01
Issued by:
The Standardization Administration of the People's Republic of China