Explosion-proof motor YB3 series

three-phaseinduction380 V

YB3 series explosion-proof three-phase induction electric motor is the new generation of YB2 Series motors,applicable to be used as a driving unit in the mine well containing methane or coal dust, or a place containing explosive mixtures of flammable gas or vapour and air, provide the coal, petrol and chemical sectors with new generation driving equipment which is safer,more advanced,more reliable and more efficient. The efficiency index of this series motors confirms to the energy efficiency grades 2 of specified in GB18613-2012 Minimum allowable values of energy efficiency and the energy efficiency grades for small and medium three-phase asynchronous motors. Our YB3 series explosion-proof three-phase induction electric motor have obtained Explosion-proof Certificate, Indusrtial Production License and MA safety mark permit. Explosion-proof mark The explosion-proof marks of this series are Exd I Mb. Exd II AT4 Gb. Exd II BT4 Gb. Structure The degrees of protection: I P55; Cooling type:IC411; Insulation class:F. Operation Conditions Rated voltage:380V,660V,380/660V, 660/1140V Rated Frequency:5OHz; Operation mode is S1 (continuous duty); Less than 1000 meters above elevation; The variation of temperature to the season shall be kept within -20-+400C (Indoor type); Highest average R.H. in the environment:(For motors in the mine well,when the average temperature is 250C) not exceeding 95%; (For motors in factories,when the monthly average temperature is not exceeding 250C) the average humidity should not be more than 90%.