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T640 Two-Input 160-A DC Power Supply Inputs

Each two-input 160-A power supply has two inputs—INPUT 1 and INPUT 0, from top to 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 PEM0 must be powered by dedicated power feeds derived from feed A, and all inputs on the two-input 160-A DC power supply in slot PEM1 must be powered by dedicated power feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system.

Table 1 describes which components are powered by each input.

Table 1: Components Powered by Each Input

Input Provides Power to These Components

INPUT 0

FPCs in slots FPC0 and FPC1, SIBs, T-CBs, Routing Engines, CIP, craft interface, and fan trays

INPUT 1

FPCs in slots FPC2 through FPC7

Published: 2009-09-26