Tx Matrix Power System Overview; Tx Matrix Power System Description; Tx Matrix Two-Input 160-A Power Supply Overview; Two-Input 160-A Dc Power Supply Description - Juniper TX MATRIX Hardware Manual

TX Matrix Power System Overview

TX Matrix Power System Description

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TX Matrix Two-Input 160-A Power Supply Overview

Copyright © 2010, Juniper Networks, Inc.
TX Matrix Power System Description on page 41
TX Matrix Two-Input 160-A Power Supply Overview on page 41
TX Matrix Two-Input 160-A DC Power Supply LEDs on page 43
TX Matrix Three-Input 240-A Power Supply Overview on page 44
TX Matrix Three-Input 240-A Power Supply LEDs on page 46
The TX Matrix router supports DC power only. The TX Matrix router has two load-sharing
DC power supplies, located at the lower rear of the chassis in slots
to bottom). The power supplies connect to the midplane, which distributes the different
output voltages produced by the power supplies to the TX Matrix router components,
depending on their voltage requirements.
Each power supply has either an active circuit breaker or an active current limiter for each
output voltage it provides. There are no passive fuses in the TX Matrix router that must
be replaced.
Each power supply is cooled by its own internal cooling system.
The TX Matrix router supports these DC power supplies:
The two-input 160-A DC power supply is supported by Junos OS Release 5.3 and later.
The three-input 240-A DC power supply in
Release 9.2 and later.
NOTE: Mixing a two-input 160-A power supply and a three-input 240-A power
supply in the same chassis is not supported during normal operations.
TX Matrix Two-Input 160-A Power Supply Overview on page 41
TX Matrix Three-Input 240-A Power Supply Overview on page 44
TX Matrix DC Power Supply Specifications on page 338
Two-Input 160-A DC Power Supply Description on page 41
Two-Input 160-A DC Power Supply Inputs on page 42
Two-Input 160-A DC Power Supply Load Sharing and Fault Tolerance on page 42

Two-Input 160-A DC Power Supply Description

Each two-input 160-A DC power supply weighs approximately 23 lb (10.5 kg) and consists
of two inputs, two 80-A (@ –48 VDC) circuit breakers, a fan, and LEDs to monitor the
Chapter 3: TX Matrix Hardware Components Overview
PEM0
2-INPUT mode is supported by Junos OS
and PEM1 (top
41