HP xw8600 - Workstation Betriebsanleitung
HP 1050W 80 Plus Power Supply
Site Preparation Guide
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© 2007 Copyright Hewlett-Packard
Development Company, L.P.
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454178-001
First Edition, December 2007
Table of contents
Power consumption and cooling
Introduction ........................................................................................................................................... 1
Power consumption and cooling considerations .................................................................................. 1
Power consumption limitations ............................................................................................................. 2
Input current calculation ....................................................................................................................... 3
Power dissipation ................................................................................................................................. 3
Cooling considerations ......................................................................................................................... 4
ENWW iii
iv ENWW
Power consumption and cooling
Introduction
This document presents power consumption and cooling considerations and limitations when using a
1050W 80 Plus power supply in an HP workstation in a typical office environment.
Power consumption and cooling considerations
An HP workstation with a 1050W 80 Plus power supply might require more power than the typical office
environment can supply. Consider the following issues:
●A fully loaded configuration might draw up to 15 amps of 110-volt power, leaving no power for other
accessories. A typical office has one, or maybe two, 15-amp circuits.
●An office air conditioning system must accommodate the extra heat generated by fully-loaded
workstation configurations.
●Some environments might have power conditioning problems that prevent the reliable use of high
end workstation configurations.
ENWW Introduction 1
Power consumption limitations
●IMPORTANT—The power supply is capable of continuously supplying 1050 watts output power
when the input voltage is greater than 90 volts. If the input voltage is less than 90 volts for any
reason (for example, a brown out or a line sag), the maximum power that can be drawn is 900
watts.
●When you use a fully loaded workstation configuration in a poor power grid area, use an
uninterruptible power supply (UPS). The UPS must be rated for at least 2 KVA. Without line
conditioning to guarantee greater than 90 volts, the maximum power that can be drawn is 900
watts.
●To reduce the risk of overload:
◦Do not exceed the rated load of any single power distribution unit (PDU).
◦Do not load a single National Electrical Manufacturers Association (NEMA) 5–15 receptacle
with more than 15 amps.
◦Do not load a single International Electrotechnical Commission (IEC) 320-1/C13 receptacle
with more than 10 amps.
◦In general, verify that each power source circuit can safely provide the current required by
equipment drawing power from it.
2 Power consumption and cooling ENWW
Input current calculation
The 1050W power supply can provide 1050 watts in a 15-amp circuit by using this input current
calculation:
Input Current = Output Power / (Voltage x Power Factor x Efficiency)
where:
Output Power = 1050 watts
Voltage = 90 volts
Power Factor = 0.998
Efficiency = 0.8
In this formula, the voltage (90 volts) includes all power line variations—line voltage sag, brown out
conditions, power grid characteristics, and so on.
CAUTION: Check with your power provider to see if your facility is exposed to 90-volt power. If 90
volts cannot be guaranteed to your workstation, the input voltage source might blow the fuse in the
power supply or trip the breaker.
For reliable workstation operation under heavy loading, use an uninterruptible power supply (UPS)
because it provides reliable voltage levels.
Power dissipation
The following table contains typical system configurations for an HP xw8600 Workstation.
Table 1 Typical HP xw8600 Workstation system configurations
Configuration CPU DIMM Graphics HDD ODD PCI Power Consumption*
12 x 80W 8 x 4GB 667 MHz Two FX5600 5 2 0 825W
22 x 80W 16 x 4GB 667 MHz Two FX5600 5 2 0 920W
32 x 120W 8 x 4GB 667 MHz Two FX5600 5 2 0 915W
42 x 120W 16 x 4GB 667 MHz Two FX1700 5 2 0 760W
52 x 120W 16 x 4GB 667 MHz Two FX3700 5 2 0 875W
62 x 120W 16 x GB 667 MHz Two FX4600 5 2 0 950W
72 x 120W 16 x 4GB 667 MHz Two FX5600 5 2 0 1000W
8 2 x 150W 16 x 2GB 800 MHz 2 x FX4600 2 2 0 1025W
* Power consumption is highly dependent on software use. The table values represent examples of maximum power
consumption per configuration, and may not represent actual usage.
ENWW Input current calculation 3
Cooling considerations
To ensure proper ventilation and cooling for your workstation, observe the following guidelines.
●Keep your workstation in an area where the airflow is not obstructed.
●Keep the workstation off from surfaces where dust can gather.
●Remove dust on the front panel (vent area) and the rear fans with a small vacuum, compressed
air, or dust rag.
●Keep the front and back of the workstation at least 0.15 m (6 in.) away from a wall or other
obstruction, as shown:
Figure 1 Maintain proper clearance
4 Power consumption and cooling ENWW
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