3COM 8800 User Manual

3Com® Switch 8800
Power Over Ethernet

Installation Guide

www.3Com.com

Part Number: 10015270 Rev. AA
Published: July 2006

3Com Corporation
350 Campus Drive
Marlborough, MA
USA 01752-3064

Copyright © 2006, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or
by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written
permission from 3Com Corporation.

3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time
without obligation on the part of 3Com Corporation to provide notification of such revision or change.

3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or
expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality,
and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s)
described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement
included with the product as a separate document, in the hard copy documentation, or on the removable media in a
directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will
be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to
you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is
delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item”
as defined in FAR
license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov
FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided
on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered
in other countries.

3Com and the 3Com logo are registered trademarks of 3Com Corporation.

Cisco is a registered trademark of Cisco Systems, Inc.

Funk RADIUS is a registered trademark of Funk Software, Inc.

Aegis is a registered trademark of Aegis Group PLC.

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows NT are
registered trademarks of Microsoft
registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.

IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Inc.

All other company and product names may be trademarks of the respective companies with which they are associated.

2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial

Corporation. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is a

1995) or

ENVIRONMENTAL STATEMENT

It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed
to:

Establishing environmental performance standards that comply with national legislation and regulations.

Conserving energy, materials and natural resources in all operations.

Reducing the waste generated by all operations. Ensuring that all waste conforms to recognized environmental standards.
Maximizing the recyclable and reusable content of all products.

Ensuring that all products can be recycled, reused and disposed of safely.

Ensuring that all products are labelled according to recognized environmental standards.

Improving our environmental record on a continual basis.

End of Life Statement

3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.

Regulated Materials Statement

3Com products do not contain any hazardous or ozone-depleting material.

Environmental Statement about the Documentation

The documentation for this product is printed on paper that comes from sustainable, managed forests; it is fully
biodegradable and recyclable, and is completely chlorine-free. The varnish is environmentally-friendly, and the inks are
vegetable-based with a low heavy-metal content.

CONTENTS

1 INTRODUCTION

Switch 8800 PoE Power Rack 5
Features 5
Architecture and Configurations 5

2 SYSTEM DESCRIPTION

Overview 9
Power Supply Modules 9
PoE Power Rack 9
Power Supply Module Visual indicators 10
System Controller 10
Distribution Panel 12

CONTENTS 3

3 SAFETY

Safety Statements 13
Warning Statements and Safety Symbols 13

Precautions 13

4 INSTALLATION AND TESTING

Introduction 15
Guidelines 15
EMI Considerations 15
Safety 15
Installation Sequence 15

Install the PoE DIMM Module 16

Technical Specifications 16

Install the PoE DIMM Module 16
Mount Chassis 16
Install Power Supply Modules 18
Ground PoE Power Rack 18
Connecting to AC utility/ AC grounding 19
Initial Start-up 19
Powering on the Device 19

5 ENGINEERING, MAINTENANCE AND TROUBLESHOOTING

Maintenance and Troubleshooting 21
LED Indication 21

4 CONTENTS

1

INTRODUCTION

Switch 8800 PoE Power Rack

The 3Com Switch 8800 PoE power rack is a modular, stand-alone Power over
Ethernet (PoE) power source. The PoE Power Rack provides a total of 4500 Watts of
DC power with 2+1 power redundancy for PoE powered devices connected to the
Switch 8800 chassis.

Features The PoE Power Rack has the following features:

■ Compatible with a wide range of input voltages from 90 V to 264 V and uses 20

A/250 VAC EN60320 C20 appliance coupler connectors and connector plugs.

■ Power factor is above 0.99

■ Efficiency is over 88%

■ Maximum device output is (N + 1) 90A @ 54V

■ Power supply modules are hot-swappable for uninterrupted operation

■ The PoE Power Rack power status may be monitored by an RS232 or RS485

interface

■ Advanced EMC (Electro Magnetic Compatibility) design

■ High safety and reliability

Architecture and Configurations

The PoE Power Rack architecture integrates DC power supply modules (3 maximum),
a system controller, and the distribution module, in a four rack-unit-high (4U) chassis.
The system controller provides local monitoring and control of the device. The general
configuration is shown in

Ta bl e 1 The PoE Power Rack Configuration

Description Standard Configuration

4U high chassis D x W x H- 320.5 x 482.6 x 177mm (12.62 x 19.00 x 6.97 in)

System controller One

SWITCH 8800 PoE
Power Supply Module

AC distribution
components

Ta bl e 1.

One installed (3 maximum for power redundancy)

■ Three independent AC power input sockets with three AC Power

switches

■ 3-phase AC voltage sensor

The standard PoE Power Rack is configured with one power supply module. The
power rack may be configured with up to 3 power supplies based on the power and
power redundancy requirements. Refer to

Figure 1 for overall dimensions. Refer to

Figure 2 for the rear view of the PoE power rack.

6 CHAPTER 1: INTRODUCTION

Figure 1 The PoE Power Rack

Figure 2 The PoE Power Rack (Rear View)

Refer to Figure 3 for the front view of a fully equipped PoE power rack. It consists of:

■ System controller with 2 LEDs and 3 connectors

■ Distribution panel with DC output sockets and three AC input sockets

■ Power supply modules (3 modules are shown in Figure 3)

The three AC input sockets correspond to the three power supply modules
(numbered from left to right).

Architecture and Configurations 7

Figure 3 The PoE Power Rack Configured with Three Power Supply Modules (Front VIew)