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64 Environmental requirements and specifications
Electrical requirements
Site wiring and power requirements
Each enclosure has two power and cooling modules for redundancy. If full redundancy is required, use a
separate power source for each module. The AC power supply unit in each power and cooling 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 and cooling modules meet standard voltage requirements for both U.S.
and international operation. The power and cooling modules use standard industrial wiring with
line-to-neutral or line-to-line power connections.
Power cord requirements
Each enclosure is shipped with 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 and cooling modules to an independent,
external power source. To ensure power redundancy, connect the two power cords to two separate circuits;
for example, to one commercial circuit and one uninterruptible power source (UPS).