34 HP StorageWorks Disk Array XP128: Site Preparation Guide
The table below lists the basic AC power requirements for a 30-amp,
three-phase, XP128 (50 or 60Hz).
Safety and dedicated earth ground
The primary reason for earth 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. You should consult with your
HP CE and your electrician to ensure that your electrical system meets all
local and national safety codes.
Parameter
Nominal Rated Voltage (VAC)
200 208
*
220 230 240 380 400 415
Minimum operating voltage
(VAC)
184 191 202 212 221 350 368 382
Maximum operating voltage
(VAC)
212 220 233 244 254 403 424 440
Rated line current
per power cord (amps RMS)
11.1 10.7 10.0 9.6 9.1 6.0 5.5 5.3
Number of power cords 2 2 2 2 2 2 2 2
Recommended circuit
breakers (amps)
30 30 30 30 30 30 30 30
Number of circuit breakers 2 2 2 2 2 2 2 2
Dropout carry-through time
at minimum line voltage
(ms)
30 30 30 30 30 30 30 30
* 60 Hz only.
