68 Environmental requirements and specifications
Environmental requirements
Electrical requirements
Site wiring and power requirements
Each enclosure has two power supply modules for redundancy. If full redundancy is required, use a
separate power source for each module. The AC power supply unit in each power supply module is
auto-ranging and is automatically configured to an input voltage range from 88–264 VAC with an input
frequency of 47–63 Hz. The power supply modules meet standard voltage requirements for both U.S. and
international operation. The power supply modules use standard industrial wiring with line-to-neutral or
line-to-line power connections.
Power cord requirements
Each enclosure equipped with AC power supply modules requires two AC power cords that are
appropriate for use in a typical outlet in the destination country. Each power cord connects one of the
power supply modules to an independent, external power source. To ensure power redundancy, connect
the two suitable power cords to two separate circuits; for example, to one commercial circuit and one
uninterruptible power source (UPS).
Table 16 Operating environmental specifications
Specification Range
Altitude To 9842 feet (3000 meters), derate 35.6ºF (2ºC)
for every 3281 feet (1 km) up to 9842 feet (3000
meters)
Relative humidity 10% to 90% RH, 104ºF (40ºC) non condensing
Temperature 41ºF to 104ºF (5ºC to 40ºC)
Shock 5.0 g, 10 ms, half-sine
Vibration 0.5 g, 1 octave/minute, 5 Hz to 500 Hz to 5
Hz, swept-sine
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