Power range: 0.5~90KW Voltage: 220v 380v 440v 660v 220/380v 380/660v Synchronous speed: 3000 1500 1000 750r/min Insulation class: F Explosion-proof class: dI dIIA dIIB dIIC Protection type: IP44 IP54 Mounting type: B3 B5 B35 V1   YB315-355 range medium capacity, low-voltage explosion-proof three-phase induction motors Power range: 45~315Kw Voltage: 380v 660v 380/660v Synchronous speed: 3000 1500 1000 750 600r/min Insulation class: F Explosion-proof calss: dI dIIA dIIB  Protection type: IP44 IP54  Mounting type: B3 V1   YB400-450 range medium capacity, low-voltage explosion-proof three-phase induction motors Power range: 160~500Kw Voltage: 6000v (or 3000v) Synchronous speed: 3000 1500 1000 750 600r/min Insulation class: B F Explosion-proof calss: dI dIIA dIIB  Protection type: IP44  Mounting type: B3