... -2008 Y2 series (IP54) three-phase asynchronous motor’s technical conditions For Y2 series (IP54) three-phase asynchronous motor the frame number is 63- ... series (IP54) motor insulation degree is F grade, but for the temperature rise, we still use B grade standard, ... eight series, which are widely used in metallurgy, mine, crane, construction, chemical industry, light industry, foodstuff, medicine, ...