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3-Phase Power Solutions Explosion-Proof Motors
The operation of systems in areas with explosive air-gas or air-dust mixtures require motors equipped with special protection features. Explosion-proof motors have enclosures that are constructed in such a way that the motor does not represent an explosion or a fire hazard. The gaskets are of improved quality to increase heat resistance and have an external protective conductor connection installed. Reinforced fan guards and brake sealing rings additionally retained with clamping strips are also standard for most explosion-proof motors. When purchasing an explosion-proof motor, there are some things to take into consideration. Below is an overview of classifications, groups and divisions in which sometimes can get confusing on what type of explosion-proof motor will work for your application. Classifications: With three major classifications, the UL classification for hazardous location motors is based on the atmosphere in which the motor will be operating under normal conditions.
Groups: The groups are determined by ignitable volatility or explosiveness and the concentration of the material present. They are rated by the highest combustible atmosphere with Group A being the most volatile and the progressively less volatile. The following is only a partial listing of atmospheres that relate to each group:
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Divisions: They are determined by the atmosphere that is present under normal operating conditions.
CAUTION One thing we cannot stress enough, always buy your motors and 3-phase power needs from reputable manufacturers that can offer you quality products plus technical support from start to finish. Check out TEMCo's supply of all the best brands and models of Explosion Proof Motors. Search their web site for more details.
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Explosion-proof motors are used in hazardous locations such as
chemical, oil and gas sector industries.
They usually range in size from 1/4 HP to 300 HP and in frame sizes up
to NEMA 449T
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