... CCC,CE,CQC 2:years of motors history,high quality 3:explosion-proof 4:Protection class:IP55 ... -1, BS4683 and EN50018.ExdI- safe for use in the non-mining surfaces of underground coal ... Specifications & FeaturesRated voltage: 380V, 660V, 380V/660V,Rated frequency: 50HzDuty: Continuous (S1). Insulation class: FProtection degree: IP55Cooling ... than 90%. YB2 three phase induction motor (ISO9001 CE CCC CQC)