Increasingly customer specification call for motors suitable for operation in Class 1, Division II hazardous locations. Dietz can supply motors that are Class 1, Groups A,B,C,D, Division II. We represent several manufacturers that supply various levels of Division II protection. These include Elektrim, Brook Crompton, Siemens, TECO Westinghouse, and Hyundai.
For increased levels of safety and temperature requirement as low as T5 we make our own brand of Division II electric motors. These motors meets, during normal operation, The Definition in the National Electric Code (1996-501-8(b)) for motors permitted to be installed in Class 1, Division II areas. NFPA 70 requirements and restrictions must be observed. Advise ignition temperature of the potential hazard or “T” code and class with requests. Division 2 motors are Non (Agency) certified. If thermostats are installed they must be connected.
Class I, Division 2.
A Class l, Division 2 location is a location:
(1) in which volatile flammable liquids or flammable gases are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems, or in case of abnormal operation of equipment; or
(2) in which ignitable concentrations of gases or vapors are normally prevented by positive mechanical ventilation, but which might become hazardous through failure or abnormal operation of the ventilating equipment; or
(3) that is adjacent to a Class I, Division 1 location, and to which ignitable concentrations of gases or vapors might occasionally be communicated unless such communication is prevented by adequate positive pressure ventilation from a source of clean air, and effective safeguards against ventilation failure are provided.
This classification usually includes locations where volatile flammable liquids or flammable gases or vapors are used, but which, in the judgment of the authority having jurisdiction, would become hazardous only in case of an accident or of some unusual operating condition. The quantity of hazardous material that might escape in case of accident, the adequacy of ventilating equipment, the total area involved, and the record of the industry or business with respect to explosions or fires are all factors that merit consideration in determining the classification and extent of each location.
Piping without valves, checks, meters, and similar devices would not ordinarily introduce a hazardous condition even though used for hazardous liquids or gases. Locations used for the storage of hazardous liquids or of liquefied or compressed gases in sealed containers would not normally be considered hazardous conditions also.