China 'GB/T 31234-2014
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 31234-2014
Technical specification for YBZT series Flameproof premium efficiency three-phase induction motor with copper rotor（Frame size 80 t0 200） YBZT系列隔爆型超高效率铸铜转子三相异步电动机（机座号80~200）技术条件
Issued Date:2014-09-30
Implemented Date:2015-04-01
Issued by:
The Standardization Administration of the People's Republic of China
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