3Com 7750 Operation & User’s Manual
Text of the manual
3Com Switch 7750 PoE Power Rack
User Manual
www.3com.com
Part No. DUA1688-3AAA01
Published: June 2005
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Table of Contents
Introduction............................................................................................................................................... 2-1
Switch 7750 PoE Power Rack ............................................................................................................ 2-1
Architecture and Configurations...........
PoE Power Rack Installation Guide
Introduction
Introduction
Switch 7750 PoE Power Rack
The 3Com Switch 7750 PoE power rack is a modular stand-alone Power over Ethernet power source. The
PoE Power Rack provides a total of 2500Watts of DC power with N+1 power redundancy for PoE powered devices
connected to the Switch 7750 Chassis.
Architecture and Configuratio
PoE Power Rack Installation Guide
Introduction
The PoE Power Rack is configured with one power supply module as standard. The power rack may be
configured with up to 3 power supplies based on the power and power redundancy requirements.
Features
The PoE Power Rack is compatible with a wide range of input voltages from 90 to 290 VAC and uses 20
A/250 VAC EN60
PoE Power Rack Installation Guide
Chapter 2 System Description
Chapter 2 System Description
Overview
Figure 2-1 shows the schematic diagram of the PoE Power Rack power system, showing the interconnections
and signal flow through the power supply modules and internal components.
Figure 2-1 Schematic diagram of the PoE Power Rack
2..1 Power Supply Modules
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