Site preparation guide HP Z800 Workstation 1110 W power supply HP Z820 Workstation 1125 W power supply HP Z840 Workstation 1125 W power supply

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. If the input voltage is less than 105 volts, but
greater than 90 volts for any reason, the maximum output power is limited to 1110 watts. To take
advantage of providing 1250 watts, a UPS is highly recommended.
IMPORTANT: The HP Z820 Workstation power supply is capable of continuously supplying 1125
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 Z820 Workstation power supply is capable of continuously supplying 1275 watts of output
power when the input voltage is greater than 105 volts. If the input voltage is less than 105 volts, but
greater than 90 volts for any reason, the maximum output power is limited to 1125 watts. To take
advantage of providing 1275 watts, a UPS is highly recommended.
The HP Z820 Workstation power supply is also capable of 1450 watts of output power when the input
voltage is greater than 180V. If the input voltage is less than 180V but greater than 105V, the
maximum output power is limited to 1275 watts. If the input voltage is less than 105V but greater than
90V, the maximum input power is limited to 1125 watts.
IMPORTANT: The HP Z840 Workstation power supply is capable of continuously supplying 1125
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 Z840 Workstation power supply is capable of continuously supplying 1275 watts of output
power when the input voltage is greater than 105 volts. If the input voltage is less than 105 volts, but
greater than 90 volts for any reason, the maximum output power is limited to 1125 watts. To take
advantage of providing 1275 watts, a UPS is highly recommended.
The HP Z840 Workstation power supply is also capable of 1450 watts of output power when the input
voltage is greater than 180V. If the input voltage is less than 180V but greater than 105V, the
maximum output power is limited to 1275 watts. If the input voltage is less than 105V but greater than
90V, the maximum input power is limited to 1125 watts.
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What is a power interruption?
A power interruption can take the form of a power failure, voltage sag, voltage spike, brownout,
over-voltage, line noise, frequency variation, switching transient, and harmonic distortion.
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What is an uninterruptable power supply (UPS) battery?
A UPS battery provides power when the primary power source is unavailable or insufficient. It
keeps the computer powered on and operational in the event of a power interruption.
There are three types of UPS—Standby/Offline, Line Interactive, and Online Continuous. A
Standby/Offline UPS enables the computer to draw power from the main AC power source until
there is a power interruption. It protects against power surges, drops, and blackouts.
A
Line Interactive UPS protects against power problems, power failure, sags, surges, brownouts,
and line noise. This supply offers voltage regulation by bumping the mains voltage up or down.
2 Power consumption and cooling