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TX Matrix Plus Power System Overview
TX Matrix Plus Power System Description
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TX Matrix Plus Seven-Input 420-A Power Supplies Overview
Copyright © 2010, Juniper Networks, Inc.
TX Matrix Plus Power System Description on page 41
TX Matrix Plus Seven-Input 420-A Power Supplies Overview on page 41
TX Matrix Plus Seven-Input 420-A Power Supply LEDs on page 43
The TX Matrix Plus router supports DC power only. The router has two load-sharing DC
power supplies located at the lower rear of the chassis in slots
right). The power supplies connect to the midplane, which distributes the different output
voltages produced by the power supplies to the TX Matrix Plus components, depending
on their voltage requirements.
There are no passive fuses in the TX Matrix Plus router that must be replaced.
The TX Matrix Plus router supports the seven-input 420-A power supply.
TX Matrix Plus Switch-Fabric Chassis Description on page 8
TX Matrix Plus Seven-Input 420-A Power Supplies Overview on page 41
TX Matrix Plus Power Specifications on page 435
TX Matrix Plus Router Power Requirements on page 436
TX Matrix Plus DC Power Cable and Cable Lug Specifications on page 438
TX Matrix Plus Power Distribution on page 439
Seven-Input 420-A Power Supplies Description on page 41
Seven-Input 420-A Power Supply Load Sharing and Fault Tolerance on page 42
Seven-Input 420-A Power Supplies Description
Each seven-input 420-A power supply consists of a removable input power tray with
seven inputs (Figure 21 on page 42), seven 60-A circuit breakers, a fan (each power supply
is cooled by its own internal cooling system), and LEDs to monitor the status of the power
supply.
Each seven-input 420-A power supply weighs approximately 35.5 lb (16.1 kg). The input
power tray weighs 3.7 lb (1.7 kg).
Figure 20 on page 42 shows the seven-input 420-A power supply.
Chapter 2: TX Matrix Plus Hardware Component Overview
PEM0
and
(left to
PEM1
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