Note:
Xycom Automation units are not suitable for installation within Division 1
locations.
Note:
Electrical equipment cannot be installed in Division 1 locations unless it is in-
trinsically safe, installed inside approved explosion-proof enclosures, or installed inside
approved purged and pressurized enclosures.
Division 2 Locations
Division 2 locations are listed below:
•
Class I volatile flammable liquids or flammable gasses are handled, processed, or used,
but confined within closed containers or closed units from which they can escape only in
cases of accidental rupture or breakdown of such enclosures or units, or in case of
abnormal operation of equipment.
•
Ignitable concentrations of Class I vapors or gasses are normally prevented by positive
mechanical ventilation, but which may become hazardous due to mechanical failure of
those ventilation units.
•
Location is adjacent to a Division 1 location.
•
Class II combustible dust is not normally in the air in quantities sufficient to produce
explosive or ignitable mixtures. Dust accumulations are normally insufficient to interfere
with normal operation of electrical equipment or other apparatus. Combustible dust
may be in suspension in the air as a result of the following: infrequent malfunctioning of
handling or processing equipment; combustible dust accumulations on, or in the vicinity
of electrical equipment; may be ignitable by abnormal operation or failure of electrical
equipment.
GROUP RATINGS
All electrical equipment that is approved for use in hazardous locations must include a
group rating. Various flammable and combustible substances are divided into these
groups as a function of their individual maximum experimental safe gap (MESG), ex-
plosion pressure, and ignition temperature.
Component temperatures and the potential for spark based upon voltage, current, and
circuit characteristics, within electrical equipment, will determine what the equipment
group rating will be. A device approved for installation within Class I, Group A loca-
tions may also be used in Groups B, C, or D.
Note:
Approved Class I equipment may not be suitable for Class II installations. Class I
includes Groups A, B, C, and D. Class II includes Groups F and G.
ENCLOSURES
The units are designed to be installed within clean and dry enclosures for both ordi-
nary and hazardous locations. The front panel meets the requirements of UL and CSA
Hazardous Location Installations
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