>>Motors efficiency is according to standard of IEC60034-30
which with efficiency grades:
>>IE3 Premium efficiency
>>IE2 High efficiency (comparable to old standard grade EFF1)
>>IE1 standard (comparable to EFF2)
In china, on the standard of GB18613-2012(itd IEC60034-30),
for the motors 0.75kw-200kw,the Minimum allowable values ofenergy efficiency and energy efficiency grades is 3 grade since1st.Sept.2012.The test should be on the standard of GB1032 method B.
>>Efficiency grades 3: equal to IE2
>>Efficiency grades 2: equal to IE3