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Hazardous Location Classifications
Class 1 - Class 2 - Class 3
Class 1
Flammable Gases, Vapors or Liquids
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Area Classifications
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Division 1:
Where ignitable concentrations of flammable gases, vapors or liquids can exist all of the time or some of the time under normal operating conditions. |
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Zone 0:
Where ignitable concentrations of flammable gases, vapors or liquids are present continuously or for long periods of time under normal operating conditions. |
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Zone 1:
Where ignitable concentrations of flammable gases, vapors or liquids are likely to exist under normal operating conditions. |
Division 2:
Where ignitable concentrations of flammable gases, vapors or liquids are not likely to exist under normal operating conditions. |
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Zone 2:
Where ignitable concentrations of flammable gases, vapors or liquids are not likely to exist under normal operating conditions. |
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| Groups |
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Division 1 and 2
A (acetylene)
B (hydrogen)
C (ethylene)
D (propane) |
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Zone 0, 1 and 2
IIC (acetylene & hydrogen)
IIB (ethylene)
IIA (propane) |
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Class 2
Combustible Dusts
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Area Classification
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Division 1:
Where ignitable concentrations of combustible dusts can exist all of the time or some of the time under normal operating conditions. |
Division 2:
Where ignitable concentrations of combustible dusts are not likely to exist under normal operating conditions. |
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Groups
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Division 1 and 2
E (metals - Div. 1 only)
F (coal)
G (grain) |
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Class 3
Ignitable Fibers & Flyings
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Area Classification
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Division 1:
Where easily ignitable fibers or materials producing combustible flyings are handled, manufactured or used. |
Division 2:
Where easily ignitable fibers are stored or handled. |
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Groups
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Division 1 and 2
None. |
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| Listed Below are examples of the atmosheric groups the UL® Listed Hazardous Locations Servo Motors would be well suited for: |
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| Class 1, Division 1 |
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Group C - Atmospheres
Acetaldehyde, allyl alcohol, n-butyraldehyde, carbon monoxide, crotonaldehyde,
cyclopropane, diethyl ether, diethylamine, epichlorohydrin, ethylene, ethylenimine, ethyl mercaptan, ethyl sulfide, hydrogen cyanide, hydrogen sulfide, morpholine, 2-nitropropane, tetrahydrofuran, unsymmetrical dimethyl hydrazine (UDMH 1, 1-dimethyl hydrazine). |
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Group D - Atmospheres
Acetic Acid (glacial), acetone, acrylonitrile, ammonia (1), benzene, butane, 1-butanol (butyl alcohol), 2-butanol (secondary butyl alcohol), n-butyl acetate, isobutyl acetate, di-isobutylene, ethane, ethanol (ethyl alcohol), ethyl acetate, ethyl acrylate (inhibited), ethylene diamine (anhydrous), ethylene dichloride, ethylene glycol monomethyl ether, gasoline, heptanes, hexanes, isoprene, isopropyl ether, mesityl oxide, methane (natural gas), methnaol (methyl alcohol), 3-methyl-1 butanol (isoamyl alcohol), methyl ethyl ketone, methyl isobutyl keton, 2-methyl-1-propanol (isobutyl alcohol), 2-methyl-2-propanol (tertiary butyl alcohol), petroleum naphtha (2), pyridine, octanes, pentanes, 1-pentanol (amyl alcohol), propane, 1-propanol (propyl alcohol), 2-propanol (isopropyl alcohol), propylene, styrene, toluene, vinyl acetate, vinyl chloride, xylenes.
(1) See Safety code for Mechanical Refrigeration (ANSI/ASHRAE 15-1978) and Safety Requirements for the Storage and Handling of Anhydrous Ammonia (ANSI/CGA G2. 1-1972).
(2) A saturated hydrocarbon mixture boiling in the range 20-135°C (68-275°F). Also known by synonyms benzine, ligroin, petroleum ether, or naphtha.
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| Class 2, Division 1 |
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Group E - Atmoshperes
Metal dusts, including aluminum, magnesium and their commercial alloys, or other cumbustible dusts whose particle size, abrasiveness and conductivity present similar hazards by using electrical equipment. |
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Group F - Atmoshperes
Cumbustible carbonaceous dusts, including carbon black, charcoal, coal or coke dusts that have more than 8% entrapped volatiles. |
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Group G - Atmoshperes
Cumbustible dusts not included in group E or F, including flour, grain, wood, plastic and chemicals. |
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| Class 2 locations, Groups E, F and G involves the tightness of joints of assembly and shaft openings to prevent the entrance of dust in the dust ignitionproof enclosure, the blanketing effect of layers of dust on the equipment that may cause overheating, and ignition temperature of the dust. |
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| Class 3, Division 1 |
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| The Gettys Class 2, Division 1, Group G listing also qualifies for Class 3, Division 1 environments. |
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Class 3, Div. 1 - Atmospheres
Ignitable fibers or flyings such as rayon, cotton (including cotton linters and cotton waste), sisal or henequen, istle, jute, hemp, tow, cocoa fiber, oakum, baled waste kapok, Spanish moss, excelsior, and other materials of similar nature. |
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DOWNLOAD PDF FILES
SX-Series Brochure
SX-Installation Manual
EC Declaration of Conformity
EC Type Examination Certificate
Production Quality Assurance Notification
SX-Seminar (pdf)
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