Site preparation guide HP Z800 Workstation 1110 W power supply HP Z820 Workstation 1125 W power supply HP Z840 Workstation 1125 W power supply
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Table of contents Power consumption and cooling ........................................................................................................................... 1 Introduction ........................................................................................................................................... 1 Power consumption and cooling considerations .................................................................................. 1 Power consumption limitations .......................
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Power consumption and cooling Introduction If your power load is over 800 watts, and your power source is between 90 to 115 volts, the HP Z800 Workstation 1110 W power supply, the HP Z820 Workstation 1125 W power supply, or the HP Z840 Workstation 1125 W power supply are designed for your applications, and this site preparation guide is important. The 1110 W power supply has an efficiency rating that qualifies it for 80 PLUS SILVER status*.
Power consumption limitations IMPORTANT: The HP Z800 Workstation power supply is capable of continuously supplying 1110 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, brownout or a line sag), the maximum output power is limited to 890 watts. The HP Z800 Workstation power supply is capable of continuously supplying 1250 watts of output power when the input voltage is greater than 105 volts.
This feature improves the quality of AC power to the supported load, reduces the number of transfers to and from battery mode, reduces the number of brief power interruptions to the load when switching to and from battery mode, and improves battery life. An Online Continuous UPS is the most dependable solution. It is also referred to as a DoubleConversion UPS.
Input current calculation The 1110W power supply can provide 1110 watts in a 15A circuit by using this input current calculation: Input Current = Output Power / (Voltage x Power Factor x Efficiency) Workstation HP Z800 HP Z820 HP Z840 1110 watts 1125 watts 1125 watts 90 volts 90 volts 90 volts Power Factor = 0.998 0.998 0.998 Efficiency = 0.820 0.835 0.
Power dissipation for the HP Z800 Workstation The following table contains typical system configurations for an HP Z800 Workstation. 2x CPU Power 2x Midrange graphics 50-75 W each (4) 2x High-end graphics 75-150 W each (4) (5) 2x High-end graphics >150 W each (4) (5) 80W 630-675 W* 675-810 W* 810-950 W* 95W 715-760 W* 760-900 W* 900-1030 W** 130W 800-845 W* 845-980 W** 930-1110 W*** Low risk = * May not need to reference details of the Site Preparation Guide.
Power dissipation for the HP Z820 Workstation The following table contains typical system configurations for an HP Z820 Workstation.
Power dissipation for the HP Z840 Workstation The following table contains typical system configurations for an HP Z840 Workstation.
Cooling considerations To ensure proper ventilation and cooling for your workstation, observe the following guidelines. 8 ● 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 bottom (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.
