What is a Dust-Ex-proof Electric Motor?

An electric motor whose housing is designed and manufactured in accordance with specified conditions to prevent dust from entering the motor housing or, if not completely preventing dust entry, the amount that enters does not hinder the safe operation of the motor, and the accumulation of internal dust is unlikely to cause ignition hazards, nor will it cause explosions of surrounding explosive dust mixtures during use.

Key features include:

The housing boasts high-sealing properties to minimize or prevent dust from entering the housing interior. Should dust manage to enter, the quantity is not sufficient to create a fire hazard.

(2) The control housing allows the surface temperature to remain below the specified temperature class. It has been applied to mechanized equipment in national grain reserve warehouses. The national standard for dust explosion-proof electrical equipment is GB 12476.1-90 "Explosion-proof electrical equipment for explosive dust environments."