Two-Input 160-A Dc Power Supply Inputs; Tolerance; Figure 22: Two-Input 160-A Dc Power Supply; Table 12: Tx Matrix Components Powered By Each Input - Juniper TX MATRIX Hardware Manual

TX Matrix Hardware Guide
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status of the power supply. Figure 22 on page 42 shows the two-input 160-A DC power
supply.

Figure 22: Two-Input 160-A DC Power Supply

Two-Input 160-A DC Power Supply Inputs

Each two-input 160-A power supply has two inputs—
bottom—each with its own 80-A (@ –48 VDC) circuit breaker.
NOTE: All inputs on the two-input 160-A DC power supply in slot
be powered by dedicated power feeds derived from feed A, and all inputs on
the two-input 160-A DC power supply in slot
dedicated power feeds derived from feed B. This configuration provides the
commonly deployed A/B feed redundancy for the system.
Table 12 on page 42 describes which components are powered by each input.

Table 12: TX Matrix Components Powered by Each Input

Input Provides Power to These Components
INPUT 0 SIBs in slot 2, 3, and 4
INPUT 1 SIB in slots 0 and 1, control boards, Routing Engines, CIP, craft interface, and fan trays
Two-Input 160-A DC Power Supply Load Sharing and Fault Tolerance
When the router is operating normally and both power supplies in a redundant power
system are switched on, load sharing between them occurs automatically. When one
power supply fails or is turned off, the other power supply immediately assumes the
entire electrical load for the system. A single power supply with both inputs active can
provide full power for as long as the router is operational. Table 13 on page 43 describes
the behavior of the two-input 160-A DC power supply and router if one of the inputs fails.
and , from top to
INPUT 1 INPUT 0
PEM0
must be powered by
PEM1
Copyright © 2010, Juniper Networks, Inc.
must