Specifying Transformers for Hazardous Locations
There are many requirements to meet when specifying transformers, such as basic performance parameters that include kVA, low and high voltage ratings, line frequency, etc. One must also consider the environment in which the transformer will be used. It is common in many industrial locations to find hazardous materials such as flammable liquids, gasses, vapors or combustible dusts in sufficient concentration to produce an explosion or fire.

