White Paper
August 1999
ECG045/0299
Compaq Power Distribution Unit
Prepared by ECG Technology
Communications Group
Compaq Computer Corporation
Contents
Product Overview.......................3
High Voltage (30A) Power
Distribution Unit (Model
NA295365-003)........................4
High Voltage (16A) Power
Distribution Unit (Model NA
295363-002).............................5
Low Voltage Power
Distribution Unit (Model
295363-001).............................6
Space-saving Design..................7
Single point of connection......... 8
Overcurrent and Surge
Protection................................... 9
Advanced Power Distribution
Unit Application........................10
Tiered PDU Configuration .......10
Power Supply Redundancy.....11
Tips for Better Reliability..........12
Questions and Answers...........13
Information Guide
The new Compaq Power Distribution Unit's innovative “zero-U”
rack design provides managed power distribution for rack cabinets
without sacrificing valuable rack space needed for business critical
servers and storage requirements. External power cords connecting
AC receptacles plug directly into the Compaq Power Distribution
Unit, organizing otherwise haphazardly connected cords.
Several voltage models are available, including the distinctive new
high voltage, high ampere PDU that provides up to 30-amperes of
alternating current. Compaq Power Distribution Units provide a
space efficient and economical way to manage power cords while
offering additional security features such as surge protection and
circuit breakers.
Help us improve our technical communication. Let us know what you think
about the technical information in this document. Your feedback is valuable
and will help us structure future communications. Please send your
comments to: reena.dass@compaq.com
Compaq Power Distribution Unit Information Guide 2
Notice
The information in this publication is subject to change without notice and is provided “AS IS” WITHOUT
WARRANTY OF ANY KIND. THE ENTIRE RISK ARISING OUT OF THE USE OF THIS
INFORMATION REMAINS WITH RECIPIENT. IN NO EVENT SHALL COMPAQ BE LIABLE FOR
ANY DIRECT, CONSEQUENTIAL, INCIDENTAL, SPECIAL, PUNITIVE OR OTHER DAMAGES
WHATSOEVER (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS
PROFITS, BUSINESS INTERRUPTION OR LOSS OF BUSINESS INFORMATION), EVEN IF
COMPAQ HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
The limited warranties for Compaq products are exclusively set forth in the documentation accompanying
such products. Nothing herein should be construed as constituting a further or additional warranty.
This publication does not constitute an endorsement of the product or products that were tested. The
configuration or configurations tested or described may or may not be the only available solution. This test
is not a determination or product quality or correctness, nor does it ensure compliance with any federal
state or local requirements.
Product names mentioned herein may be trademarks and/or registered trademarks of their respective
companies.
Compaq, Contura, Deskpro, Fastart, Compaq Insight Manager, LTE, PageMarq, Systempro, Systempro/LT,
ProLiant, TwinTray, ROMPaq, LicensePaq, QVision, SLT, ProLinea, SmartStart, NetFlex, DirectPlus,
QuickFind, RemotePaq, BackPaq, TechPaq, SpeedPaq, QuickBack, PaqFax, Presario, SilentCool,
CompaqCare (design), Aero, SmartStation, MiniStation, and PaqRap, registered United States Patent and
Trademark Office.
Netelligent, Armada, Cruiser, Concerto, QuickChoice, ProSignia, Systempro/XL, Net1, LTE Elite,
Vocalyst, PageMate, SoftPaq, FirstPaq, SolutionPaq, EasyPoint, EZ Help, MaxLight, MultiLock,
QuickBlank, QuickLock, UltraView, Innovate logo, Wonder Tools logo in black/white and color, and
Compaq PC Card Solution logo are trademarks and/or service marks of Compaq Computer Corporation.
Microsoft, Windows, Windows NT, Windows NT Server and Workstation, Microsoft SQL Server for
Windows NT are trademarks and/or registered trademarks of Microsoft Corporation.
NetWare and Novell are registered trademarks and intraNetWare, NDS, and Novell Directory Services are
trademarks of Novell, Inc.
Pentium is a registered trademark of Intel Corporation.
Copyright ©1999 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A.
Compaq Power Distribution Unit Information Guide
White Paper prepared by ECG Technology Communications Group
First Edition (August 1999)
Document Number ECG045/0299
ECG045/0299
Compaq Power Distribution Unit Information Guide 3
Product Overview
Figure 1. Compaq Power Distribution Unit ( Low voltage model shown)
Ê
Ë
Ì
Compaq Power Distribution Unit
Brackets for rack-mount installation
Six mounting screws
The Compaq Power Distribution Unit manages power distribution within Compaq rack cabinets
by providing 12 AC receptacles at one single input power cord for rack-mountable devices. Total
electrical current (measured in amperes and referred to as an electrical load) generated from all
connected devices can often consume more power than typically provided from a standard prong
15A commercial wall outlet. Such high capacity power requirements necessitate the need for a
Power Distribution Unit to distribute AC power to multiple devices and to ensure that each
connected device receives individual power required to function. With PDU assistance, power is
actually dispersed as needed to connected servers, storage units, and other peripherals. The
Compaq Power Distribution Unit is available in low and high voltage models.
ECG045/0299
Compaq Power Distribution Unit Information Guide 4
High Voltage (30A) Power Distribution Unit (Model NA295365-003)
Figure 2. The New 30A Compaq High Voltage Power Distribution Unit
This high voltage Power Distribution Unit provides up to a 30-ampere capacity of alternating
current load at 208 volts. This new Compaq PDU is the source to accommodate more powerful
loads, and will support twice the load segments of the 16A model and is equipped with four
circuit breakers providing additional protection. This High Voltage Power Distribution Unit is
designed to operate at 275-320V for rack-mountable servers, and protects up to 50,000A per unit,
supporting electrical power distribution requirements of the Compaq rack environment. The High
Voltage PDU utilizes IEC320 (C-10) output connectors, whereas the input is provided by a 16A
IEC320 (C19) inlet connector to link the AC source to the rack cabinet.
Note: The new 30A High Voltage, High Ampere Power Distribution Unit will be available
October 25, 1999 in North America.
Load Balancing
The Compaq 30A High Voltage Power Distribution Unit is divided into four sections. Each
section is protected with a 10A circuit breaker. The total load for this PDU cannot exceed 30A or
an internal fuse will open. Each section of the PDU has three outlets. The total current available
for each section is 10A. The loads should be balanced among the four sections such that the total
per section does not exceed 10A or a total of 30A for the PDU. Refer to Figure 2 for load
segmentation for the 30A Power Distribution Unit.
ECG045/0299
Compaq Power Distribution Unit Information Guide 5
High Voltage (16A) Power Distribution Unit (Model NA 295363-002)
Figure 3. Compaq High Voltage (16A) Power Distribution Unit
This High Voltage Power Distribution Unit provides up to a 16A capacity, and is designed to
clamp at 208-240V for rack-mountable servers, and protects to 50,000A per unit, supporting
electrical power distribution requirements of the Compaq rack environment. This High Voltage
PDU utilizes IEC320 (C-10) output connectors, whereas the input is provided by a 16A IEC320
(C19) inlet connector to link the AC source to the rack cabinet.
Note: For more detailed information regarding Compaq Power Distribution Unit specifications,
please consult the Compaq website: www.compaq.com/products/servers/options/ups/pdu.
ECG045/0299
Loading...