HP 1050W 80 Plus Power Supply Site Preparation Guide
Copyright Information Warranty © 2007 Copyright Hewlett-Packard Development Company, L.P. Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
Table of contents Power consumption and cooling Introduction ........................................................................................................................................... 1 Power consumption and cooling considerations .................................................................................. 1 Power consumption limitations ............................................................................................................. 2 Input current calculation ..........
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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.
Power consumption limitations 2 ● 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.
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.
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.
