Preparing for installation 43
Three-phase AC cabling for Europe
Each three-phase HP Disk Array XP128 has two main disconnect devices
(two main breakers for dual power lines) so that AC power to the unit can
be supplied from separate power distribution panels with two power-supply
cords.
Trained service personnel 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 Disk Array XP128 cabinets are shipped with
unterminated power cords. Your electrician must select and install the
correct power plug. Power cords of type H07RN-F or equivalent, with five
6 mm
2
conductors per cord, are provided with the unit.
Caution Be sure to connect the power cords to the distribution panel as shown in the
figure below. Improper wiring of the neutral conductor may cause damage
to your disk array. To reduce the risk of a wrong connection, you should
use a plug and socket that is approved for this disk array. It is your
electrician’s responsibility to select and install the proper plug.
When connecting to 380 to 415-volt service, a WYE configuration with
neutral and ground conductors (in addition to the three-phase wires — a
total of five wires) is required.
High leakage current can occur between the power supply and the unit. To
avoid electrical shock, ensure that the protective earth connection is made
before the supply connections.
Black
XP128
Power Cord
Brown
Black
Blue
Green/Yellow
Line
To Power
Distribution
Panel
Line
Line
Neutral
Safety Ground
L1
L2
L3
N
G
