HP Integrity rx8640, HP 9000 rp8440 Server User Service Guide

Table 15 AC Power Requirements (continued)
CommentsValueRequirements
At all loads of 50%–100% of supply
rating.
At all loads 0f 25%–50% of supply
rating
>0.98
>0.95
Power factor correction
Per line cord<3.0 (ma)Ground leakage current (mA)
Table 16 System Power Requirements
CommentsVAWattsPower Required (50–60 Hz)
See Note 159825862Maximum Theoretical Power
30A @ 180 VAC, See Note 25400– – –Marked Electrical Power
See Note 339623883User Expected Maximum Power
Note 1: Maximum Theoretical Power: or “Maximum Configuration” (Input power at the ac input
expressed in Watts and Volt-Amps to take into account Power factor correction.)The calculated
sum of the maximum worst case power consumption for every subsystem in the server. This number
will never be exceeded by a functioning server for any combination of hardware and software
under any conditions.
Note 2: Marked Electrical Power: (Input power at the ac input expressed in Volt-Amps.)The Marked
Electrical Power is the rating given on the chassis label and represents the input power required
for facility ac power planning and wiring requirements. This number represents the expected
maximum power consumption for the server based on the power rating of the bulk power supplies.
This number can safely be used to size ac circuits and breakers for the system under all conditions.
Note 3: Typical Maximum Power: or User Expected Maximum Power, (Input power at the ac input
expressed in Watts and Volt-Amps.)The measured maximum worst case power consumption. This
number represents the larges power consumption that HP engineers were able to produce for the
server with any combination of hardware under laboratory conditions using aggressive software
applications designed specifically to work the system at maximum load. This number can safely
be used to compute thermal loads and power consumption for the system under all conditions.
Environmental Specifications
This section provides the environmental, power dissipation, noise emission, and air flow
specifications for the server.
Temperature and Humidity
The cabinet is actively cooled using forced convection in a Class C1-modified environment. The
recommended humidity level for Class C1 is 40 to 55% relative humidity (RH).
Operating Environment
The system is designed to run continuously and meet reliability goals in an ambient temperature
of 5° C–32° C at sea level. The maximum allowable temperature is derated 1° C per 1,000 feet
of elevation above 3,000 feet above sea level up to 25° C at 10,000 feet. For optimum reliability
and performance, the recommended operating range is 20° C to 25° C. This meets or exceeds
the requirements for Class 2 in the corporate and ASHRAE standard. See Table 17 (page 30) for
an example of the ASHRAE thermal report.
Environmental Specifications 29