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

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.
●
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 the 1110 watt or 1125 watt output and 105 volts for 1250
watt or 1275 watt output, the maximum output power is limited to 890 watts with either the 1110
or 1125 watt power supplies. See
Power dissipation for the HP Z800 Workstation on page 5
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 or 1275 watts of output power, you must maintain
115 volts, ideally.
●
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 to 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.
Power consumption limitations 3