 YB series flameproof three-phase induction electric motors have such characteristics as high efficiency, low noise, slight vibration, high locked-rotor torque and reliable operation. The rated voltage of YB series electric motor is 220V, 380V, 660V, 220/380V or 380/660V. The rated frequency of this series electric motor is 50Hz or 60Hz. The power grade and mounting dimensions of this series electric motors are the same as those of Y series electric motors, up to the IEC standard. The degree of protection by enclosure of YB series electric motors is IP44 and cooling form IC0141. Class F insulation is adopted. This series electric motor can operate constantly at environmental temperature of not higher than 40 C. The electric property index of YB series electric motors are the same as that of Y series electric motors.
- Frame size of YB series electric motor: H80-280mm.
- Power range of YB series electric motor: 0.55-90KW.
- Synchronous speed of YB series electric motor: 3000, 1500, 750r/min.
- Explosion protection marking of YB series electric motor: d I, d II AT4, d II BT4.
The explosion protection property of this series electric motors accords with GB3836. 1-83 Electrical Apparatus for Explosive Atmosphere General Requirements and GB3836. 2-83 Electrical Apparatus for Explosive Atmospheres Flameproof Electrical Apparatus "d" and also reaches the IEC standards. The YB series electric motors apply in the placed where there are explosive gas mixture.
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IEC Standard Electric Motors