Electrical Requirements; Line Voltage; Branch Circuit Breakers; Single-Phase Branch Circuit Breakers - HP StorageWorks XP10000 Disk Array Site Prep Manual

Electrical requirements

Line voltage

Line voltage (AC) at the wall power outlet is a function of the local power utility and your
building power distribution network. Voltages outside of the operating range of the disk
array can cause intermittent system errors or a complete system shutdown. If required,
an HP representative and your electrician can determine the current line voltage and
make recommendations. See
voltage requirements.
Avoid the use of a line voltage conditioner.
Make sure that a power distribution unit (if used) provides the correct voltage to support
your entire system.

Branch circuit breakers

See "Chapter 3 Electrical specifications"
your power situation.

Single-phase branch circuit breakers

The power cords supplied are specified for connection to a single-phase, 20-amp circuit.

Frequency

Usually, AC line frequency is determined by your local power providers. In some cases,
electrical power is supplied by generators. Shifts in AC line frequency can cause system
errors. An HP representative can monitor the frequency of the input AC line power and
make recommendations, if necessary. The disk array requires that the line frequency be
within 0.5 Hz of the rated line frequency (50 Hz or 60 Hz). See
specifications"

Safety and dedicated ground

The primary reason for grounding electrical systems is safety. The safety ground is
required by the National Electric Code (USA) and most other local, regional, and
national codes. In addition to safety ground, HP requires that a dedicated (earth
reference) ground be installed as a common reference point for all system components.
Consult with an HP representative and your electrician to ensure that your electrical
system meets all local and national safety codes.
"Chapter 3 Electrical specifications"
for more information.
HP StorageWorks XP10000 Disk Array Site Prep Guide
for specific branch circuit requirements for
for specific AC line
"Chapter 3 Electrical
49