T640 Dc Power System Requirements; Table 72: T640 Component Dc Power Requirements - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide

T640 DC Power System Requirements

Table 72: T640 Component DC Power Requirements

Component
Base system, not including FPCs and PICs (includes five SIBs, one host subsystem, one SCG,
cooling system, and craft interface), and two DC power supplies
SIB: Standard SIB, standard SIB version B, or T640-SIB
Enhanced FPC1 and Enhanced II FPC1
Enhanced Scaling FPC1
FPC2, Enhanced FPC2, and Enhanced II FPC2
Enhanced Scaling FPC2
FPC3, Enhanced FPC3, and Enhanced II FPC3
Enhanced Scaling FPC3
128
T640 DC Power System Requirements on page 128
Maintaining the T640 Power Supplies on page 456
T640 General Electrical Safety Guidelines and Electrical Codes on page 529
To allow for future growth so that you can operate the T640 router in any hardware
configuration without upgrading the power infrastructure, we recommend that you
provision the following per each input. Doing so enables you to operate the router in any
configuration without upgrading the power infrastructure.
68 A @ –48 VDC (nominal) for each power supply input on a two-input 160-A DC
power supply
67 A @ –48 VDC (nominal) for input 0 and 67 A @ –48 VDC for input 1 on a three-input
240-A DC power supply
50 A @ –48 VDC (nominal) for each power supply input on a four-input 240-A DC
power supply
56 A @ –48 VDC (nominal) for each power supply input on a four-input 240-A DC
power supply
If you do not plan to allow for future growth, you can use the information in Table 1 to
calculate the typical power consumption @ –48 VDC and typical thermal output for your
current hardware configuration.
various hardware components when the router is operating under typical voltage
conditions.
Table 72 on page 128 lists the power requirements for
Copyright © 2017, Juniper Networks, Inc.
Current Requirement
(Amps @ –48 VDC)
16.9 A
0.8 A
3.4 A
7.1 A
3.4 A
7.5 A
6.8 A
9.1 A