... Explosion Proof Motor, Flameproof Motor, Electric Motor, Asynchronous MotorYB2 series Explosion proof electric motor are ... Gas Atmospheres-General Requirements. GB3836.2-2000 Electrical Apparatus for Explosive Gas ... 2.Altitude: not exceeding 1000meters above sea level. 3.Relative humidity should be less than 90%. Explosion Proof Motor, Flameproof Motor, Electric Motor, Asynchronous Motor,(with ...