HP Z800 - Workstation - 6 GB RAM, Дополнительное руководство

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Power consumption limitations
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IMPORTANT—The 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.
IMPORTANT—The 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.
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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 a UPS?
A UPS is a battery that 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
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.
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 Double-
Conversion UPS. It provides protection against power failures, sags, surges, brownouts, line noise,
spikes, frequency variations, switching transients, and harmonic distortion. The inverter is always
on and supplies the supported load with clean, regulated power and the incoming power is always
fully conditioned. Constant voltage and frequency regulation means far less switching to and from
the battery which increases the life and reliability of the UPS.
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Why use a UPS?
Use a UPS for a fully loaded workstation configuration that operates in a poor power grid area. The
UPS must be rated for at least 2 kVA. A UPS is necessary because without line conditioning to
guarantee greater than 90 volts for 1110 watts output and 105 volts for 1250 watts output, the
maximum output power is limited to 890 watts and 1110 watts, respectively. See
Power
dissipation on page 4 for configurations and maximum power estimates.
HP recommends an online continuous UPS that provides a layer of insulation from quality
problems. This type of supply also allows control of output voltage and frequency regardless of
input voltage and frequency. To reach 1250 watts of output power, you must maintain 115 volts,
ideally.
2 Power consumption and cooling ENWW