Stratus ftServer 2600, Site Planning Manual

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AC Power and HVAC Service Requirements
2-2
Stratus ftServer 2600, 4500, and 6300 Systems: Site Planning Guide (R638)
AC Power and HVAC Service Requirements
From the
Stratus ftServer Systems: Peripherals Site Planning Guide
(R582), obtain the
nominal input line voltage (volts AC) and frequency (Hz) required for optional,
AC-powered components. In general, provide 100–127 VAC or 200–240 VAC at 50 or
60 Hz for optional components. PDUs require 200–240 VAC at 50 or 60 Hz. Operating
the system at the higher end of the voltage range, when possible, results in higher
power system efficiency and consequently less generated heat and lower utility costs.
For detailed information about the plug types and lengths of the power cords provided
with the system, see “Power Cord Summary” on page 2-13 .
The power service must be properly wired and grounded according to local standards
and regulations. See Appendix B, “Electrical Circuit and Wiring Information” for more
information.
N O T E
A branch circuit breaker with ground fault protection must
allow a minimum of 3.5 milliamperes (mA) leakage current
for each power cord.
Use the following worksheets to determine AC power requirements for the site.

In Table 2-1 , determine the power requirements at the A-side power source.

In Table 2-2 , determine the power requirements at the B-side power source.

In Table 2-3 , determine the power requirements for components outside of the
cabinet. These components can share a power source with the A-side or B-side
components.

In Table 2-4 , determine the related HVAC requirements.
To determine AC power requirements
Provide information in Tables 2-1 , 2-2 , and 2-3 as follows:
1. In the Quantity column, write the number of each type of component.
2. Multiply the entry in the Quantity column by the number in the Watts column, and
enter the result in the Watts Subtotal column.
3. Add the values in the Watts Subtotal column, and enter the sum on the bottom line.
This value indicates the maximum power requirement for each power source.