1.2.8
Environmental Conditions
1.2.8.1
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NOTE: Video cameras are typically rated to work
between minus 10.0 degrees C and plus 55 degrees C
(14 and 131 degrees F) by the manufacturers. The
environmentally sealed camera housing can be
configured with a heater and blower to allow the
camera to work at less than minus 10.0 degrees C (14
degrees F). If a camera is to be installed in a
location that exceeds the 55 degrees C (131 degrees
F) temperature limit, the designer will have to
provide a method to shade the camera and housing in
addition to the sunshade provided with the
environmentally sealed housing.
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The cameras and all other field equipment shall be rated for continuous
operation under ambient environmental conditions of minus 10.0 degrees C to
55 degrees C (14 degrees to 131 degrees F) 14 degrees to 120 degrees F
using no auxiliary heating or cooling equipment. Equipment shall be rated
for continuous operation under the ambient environmental temperature,
humidity, wind loading, ice loading, and vibration conditions specified or
encountered for the installed location.
1.2.8.2
Security Center Equipment
Security Center and remote control/monitoring station equipment shall,
unless designated otherwise, be rated for continuous operation under
ambient environmental conditions of 15.6 degrees C to 29.4 degrees C (60
degrees F to 85 degrees F) 60 degrees F to 85 degrees F and a relative
humidity of 20 to 80 percent.
1.2.8.3
Hazardous Environment
All system components located in areas designated "Hazardous Environment"
where fire or explosion hazards may exist because of flammable gases or
vapors, flammable liquids, combustible dust, or ignitable fibers or
flyings, shall be rated Class II, Division I, Group F, and installed
according to Chapter 5 of the NFPA 70 and as shown.
1.2.9
Electrical Requirements
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NOTE: The designer will select the correct line
frequency, and show on the drawings the
characteristics of each voltage source.
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Electrically powered IDS equipment shall operate on 120 or 240 volt [60]
[50] Hz AC sources as shown. Equipment shall be able to tolerate
variations in the voltage source of plus or minus 10 percent, and
variations in the line frequency of plus or minus 2 percent with no
degradation of performance.
SECTION 16751A
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