HP StorageWorks XP12000 Disk Array Site Preparation Guide (AE002-96040, March 2008)

You are responsible for having the correct plugs and receptacles installed by an electrician in
compliance with local electrical requirements and practices. See “Electrical specifications” on page
49 for specific plug and receptacle part numbers and ordering information.
CAUTION:
When installing the receptacles, the electrician must ensure that each receptacle has its own neutral (if
required) and ground. Using the same neutral/ground for more than one circuit causes voltage loss and
heat problems and can create a fire hazard. A shared neutral conductor that fails open-circuit can cause
overvoltage damage to equipment.
Power line transients
Heavy electrical loads from nearby machinery or equipment (for example, elevators or electric welders)
can cause intermittent system problems with sophisticated electronic equipment, even if that equipment
is on a separate circuit breaker. When faced with these conditions, provide a separate, completely
independent power panel with an isolated ground and circuit breaker coming directly from the main
building power source or secondary power source.
If necessary, an HP representative can measure your power line noise level and make appropriate
recommendations concerning the use of line treatment devices.
Maximum peak inrush specifications
Table 19 Maximum peak inrush specifications
Three-phaseSingle-phasePowerCabinet
34 A46 A30-amp
DKC
Not applicable60 A50-amp
26 A34 A30-amp
DKU
Not applicable56 A50-amp
50-amp power configurations are single-phase only.
Crest factor specifications
Table 20 Crest factor specifications
Three-phaseSingle-phasePowerCabinet
1.671.6830-amp
DKC
Not applicable1.5650-amp
1.531.6530-amp
DKU
Not applicable1.5050-amp
50-amp power configurations are single-phase only.
XP12000 Disk Array Site Preparation Guide 45