RBS Product Description
Table 3
Environmental Specifications
Environmental
Parameters
Normal
Operation
(1)
Safe Functio
n
(2)
Non-destructive
Conditions
(3)
Temperature
+5 to +40 C
0 to +45 C
-10 to +55 C
Relative Humidity
5 – 85%
5 – 90%
5 – 90%
(1) Normal operation describe the environmental conditions where all units function as specified.
(2) Environmental stress above the limits for normal operation where all units shall continue to
function during the stress, but performance or capacity may be reduced. When the environmental
stress has dropped to normal conditions, function as specified shall automatically be achieved.
Safe function refers to a period of not more than 72 consecutive hours, and a total of not more
than 15 days in one year.
(3) Non-destructive conditions describe environmental stress above the limits for normal
conditions with no function guaranteed and unspecified degradation. When the environmental
stress has dropped to normal conditions, restoring full RBS performance requires no manual
intervention on site. Non-destructive conditions refer to a period of maximum 96 consecutive
hours, and a total of maximum 5.5 days in a three-year period.
Acoustic Dispersion
The cabinet noise dispersion for an RBS with four fans is shown in the
two figures below. The figures show the noise dispersion generated by a
free-standing cabinet and by a cabinet mounted against a wall.
Note:
The acoustic noise dispersion values for a free-standing cabinet
and a cabinet installed against a wall were tested according to the
ISO 9614-2 standard, however deviations from these values may be
experienced due to the nature of materials in the environment where
the cabinet is installed. Objects may reflect or absorb sound and will
affect acoustic dispersion.
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19/1551-LZA 701 0001 Uen PG1
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2010-10-08