Chapter 2 Cabinet and Rack Specifications 15
Environmental Requirements
This section describes the environmental conditions that are prerequisite to installing
the cabinet.
Temperature, Humidity, and Altitude
TABLE 2-16 lists operating and nonoperating temperature, relative humidity, and
altitude ranges for the Sun Rack 900/1000 cabinets.
Airflow and Heat Dissipation
Cabinet airflow is from front to back. Allow at least 30 inches in front of the cabinet,
and at least 24 inches behind the cabinet, for service clearance, proper ventilation,
and heat dissipation.
Power Requirements
The AC power sources must provide the correct voltage, current, and frequency
specified on the model and serial number label. The module can run without
interruption within the limits shown in
TABLE 2-17.
TABLE 2-16 Cabinet Temperature, Humidity, and Altitude
Specification Operating Nonoperating
Temperature 41˚ F to 95˚ F
(5˚ C to 35˚ C)
-40˚ F to 150.8˚ F
(-40˚ C to 66˚ C)
Relative Humidity (RH) 20% to 80%
noncondensing
5% to 95%
noncondensing
Altitude 0 to 9,840 feet
(0 to 3 km)
0 to 39,370 feet
(0 to 12 km)
TABLE 2-17 Cabinet AC Power Requirements
Parameter Requirements
Nominal voltages 200 to 240 VAC
Operating voltage 180 to 240 VAC
Frequency range 47 to 63 Hz
Current 32A (2X 16A) maximum
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