YBZ series(H63-H100) explosion-proof three phases asynchronous motor for fuel oli charger is derived by Yb2 series, all its performance indexes are the same with those of YB2 series and match with fuel oil charger. It has the explosion-proof mark of Exd Ⅱ BT4, and the explosion-proof performance meets the regulations or GB3836.1-2000'part1:general requirement of electric equipment applied under the condition with explosive gas'and GB3836.2-2000'part2:explosion-proof's'of electric equipment applied under the condition with explosive gas' .