Three-Phase Ac European Branch Circuit Requirements; Single-Phase Ac Cabling For The Usa; Connecting The Power Supply Cords; Connecting European Three-Phase Power Cords - HP StorageWorks XP12000 - Disk Array Site Preparation Manual

Figure 11 Connecting European three-phase power cords
When connecting to 380 to 415 volt service, use a WYE configuration with neutral and ground
conductors, in addition to the three-phase wires, for a total of five wires.
WARNING!
High leakage current can occur between the power supply and the unit. To avoid electrical shock, make
the protective earth connection before the supply connections.

Three-phase AC European branch circuit requirements

When the supplied line to line voltage is in the 380 to 415 volt range, the connection must be a
five-wire WYE or STAR connection.
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
listed under the "AC line voltage requirements" heading provide specifications for the overcurrent
protective devices required for three-phase operation.
All protective devices must comply with the standards of the country where the units are to be installed.
If a protective device interrupts a supply conductor, it must also interrupt all other supply conductors.
WARNING!
Overcurrent protection is also required for the neutral conductor.

Single-phase AC cabling for the USA

When configured for 50-amp, single-phase power, each XP12000 disk array rack has two power
cords and two main disconnect devices so that AC power can be supplied from separate power
distribution panels. When configured for 30-amp, single-phase power, each HP XP12000 disk array
rack has four power cords and four main disconnect devices.
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

The XP12000 disk array can be factory-configured for 50-amp or 30-amp, single-phase power, as
the following text explains.
54 Electrical specifications