Grounding Requirements; Ac Connections - HP StorageWorks XP10000 Disk Array Site Prep Manual

Grounding requirements

Your site's electrical subsystem must meet all of the following conditions:
• Grounding as prescribed by your local country codes.
• An insulated grounding conductor that is identical in size and insulation material
and thickness to the ungrounded branch-circuit supply conductors. It should be
green, with or without yellow stripes, and is to be installed as a part of the
branch circuit that supplies the unit or system. This means the ground conductor
must be run in the same conduit, armored cable, or other cable bundle as the
phase wires.
The grounding conductor should be grounded to earth at the service equipment
•
or other acceptable building earth ground such as the building frames (in case
of a high-rise steel-frame structure).
• IT-configured grounding systems are not certified for use with the disk array as
these grounding systems may not have solidly conductor-connected grounded
power systems and/or they may have resistive impedance inserted in ground
and/or neutral lines. The disk array requires a solidly conductor-connected
ground and may require a separate neutral in the case of WYE or STAR
connections. For HP disk arrays, TN grounding systems are preferred.

AC connections

The disk array primary rack has four separate connections to 200 VAC, single-phase,
20-amp power.
The second rack has two connections to AC power in the minimum configuration (four
recommended) and four connections to AC power in the maximum configuration. Power
requirements are 200 VAC, single-phase, 20-Amps.
When receptacles are used to connect disk array components to AC power, they must
include a dedicated ground connection that is insulated from the receptacle. It is
important that the receptacle box be grounded with an additional ground connection
that is separate from the dedicated ground. The additional ground can be hard conduit.
Specific AC power cords and plugs are available to suit the power requirements and
receptacles in your location. You can specify the cords and plugs you need when you
order the HP XP10000 disk array. You are responsible for having the correct plugs and
receptacles installed by an electrician in compliance with local electrical requirements
and practices.
50 Site requirements