Three-Phase Ac Usa Branch Circuit Requirements; Three-Phase Ac Cabling For Europe (50 Hz); Connecting The Power Supply Cords - HP StorageWorks XP12000 - Disk Array Site Preparation Manual

The power cords provided with the disk array are nonshielded, type ST or equivalent with four #8
AWG (minimum) conductors terminated at one end with an assembled plug connector.

Three-phase AC USA branch circuit requirements

To protect the disk array, your building must be wired correctly. Each supply ("hot") conductor must
be protected by a short-circuit protective device and by an overcurrent protective device. The tables
provided in "AC line voltage
required for three-phase operation.
All protective devices must comply with national standards of the country where the units are installed.
If a protective device interrupts any supply conductor, it must also interrupt all other supply conductors.
Overcurrent protection is not required for the neutral conductor of this unit. Only 50 Hz, three-phase
configurations have a neutral conductor.

Three-phase AC cabling for Europe (50 Hz)

Each three-phase DKU has two main disconnect devices (two main breakers for dual power lines) so
AC power can be supplied from separate power distribution panels with two power supply cords.
CAUTION:
An HP representative should be present whenever the disk array is being connected to a new power source
for the first time.

Connecting the power supply cords

All 50 Hz, European HP XP12000 disk array racks are shipped with unterminated power cords. Your
electrician must select and install the correct power plug. Be sure to prepare the socket receptacles
and power cords between the power distribution board of the building and the attachment plugs for
the unit. 30-amp power cords of type H07RN-F or equivalent, with five 6 square mm conductors per
cord, are provided with the unit.
CAUTION:
Be sure to connect the power cords to the distribution panel as shown in
neutral conductor may cause damage to the disk array. To reduce the risk of a wrong connection, use a
plug and socket that are approved for this disk array. It is your electrician's responsibility to select and
install the proper plug.
requirements" on page 49 specify the overcurrent protective devices
XP12000 Disk Array Site Preparation Guide
Figure 11. Improper wiring of the
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