YB2 flame-proof three-phase induction motor(ac m

YB2 series flames-proof motorsforvertical stage pump are the basic series motors developed,designed and manufactured into total-enclosed self-fan-cooled squirrel-cage high-efficiency explosion-proof three-phase asynchronous by our company .This series motors have many remarkable features such as excellent performance,reliable operation,vibration and noise values lower than the like products etc.and confirm to environmrntal requirements. For this series motors ,the output ratings and mounting dimensions conform to the specifications of IEC standards and the correlation between them basically agrees with DIN42673 of German standards. The motors are easy to complete with export machinery and equipment and to supply as spare accessories in the import equipment. This series motors are designed and manufactured into flame-proof type and the flame-proof property conforms to China National Standards :GB3836.1-2000 Electrical Apparatus for Explosive Gas Atmospheres part 1:General Requirement GB3836.2-2000 Electrical Apparatus for Explosive Gas Atmospheres part 2: Flame proof Enclosure d and standards IEC 79-1,BS4683 and EN 50018. The explosion protection markd are ExdI,ExdIIAT4 and ExdIIB T4. They are safe to use in the locations where there are explosive mixtures of gas and vapor-air. Exdmotors are safe for use in the non-mining surfaces of underground coal mines where the explosive mixtures of methane or coal-dust are present. ExdI4 and ExdIIBT4 motors are safe for use separately in plants where the explosive mixtures of IIA and IIB class ,T1,T2,T3 or T4 are present.Main technical parameter1.Normal working conditionEnvironment temperature:Change as the seasons change,but no more than 40oCAttitude:No more than 1000m2.Rated frequency:50HZ3.Rated voltage:220V,660V,380V/660V4.Working way:Continuing(S1)5.Shell protection grade:IP55(Junction box:IP55)6.Coldening mode:IC411Three basic constructions are available as follows:B3with foot mounted and flangelessB5with flange mounted and footlessB35with both foot and flange mountedNote:Based on three constructions mentioned above,this series motors can be modified into 12 Constructions and mounting arrangements.