“Hazardous Locations and Harsh Industrial Environments” typically refers to areas which may contain dangerous and corrosive, explosive or combustible gases, liquids, or dust. Typical applications include mining, petrochemical, and pulp and paper industries. Rex Power Magnetics has been designing and producing a line of dry type transformers for Hazardous Locations and Harsh Industrial Environments. Rex’s product offering in this category includes three varieties, known as the HLA, HLB & HLC product lines, which are CSA and UL approved for CLASS I, DIVISION 2, GROUPS A, B, C, & D.

• Group A: Atmospheres containing acetylene.
• Group B: Atmospheres containing butadiene, ethylene oxide, hydrogen (or gases of vapors equivalent in hazard to hydrogen, such as manufactured gas) or propylene oxide.
• Group C: Atmospheres containing acetaldehyde, cyclopropane, diethyl ether, ethylene, hydrogen sulfide, or unsymmetrical dimethyl hydrazine (UDHM), or other gases or vapors of equivalent hazard.
• Group D: Atmospheres containing acetone, acrylonitrile, alcohol, ammonia, benzene, benzol, butane, ethylene, dichloride, gasoline, hexane, isoprene, lacquer solvent vapors, naphtha, natural gas, propane, propylene, styrene, vinyl acetate, vinyl chloride, xylenes, or other gases or vapors of equivalent hazard.

*NEW* A variant of Rex’s HLA & HLB transformers is available with IECEx approved CLASS 1 Zone 2 certification. Please contact our sales office for more information on IECEx approved transformers CLASS I, ZONE 2, GROUPS IIA, IIB, IIC 

• Group II A: Atmospheres containing acetaldehyde, acetone, cyclopropane, alcohol, ammonia, benzene, benzol, butane, ethylene, dichloride, gasoline, hexane, isoprene, lacquer solvent vapors.
• Group II B: Atmospheres containing acrylonitrile, butadiene, diethyl ether, ethylene, ethylene oxide, hydrogen sulfide, propylene oxide, or unsymmetrical dimethyl hydrazine (UDHM), or other gases or vapors of equivalent hazard.
• Group II C: Atmospheres containing acetylene, carbon disulfide, hydrogen or other gases or vapors of equivalent hazard.