T640 Power System Description; Table 24: Supported Power Supplies - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide

T640 Power System Description

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Documentation
60
The router supports two load-sharing DC power supplies, located at the lower rear of
the chassis. The power supplies connect to the midplane, which distributes different
output voltages produced by the power supply to the router components, depending on
voltage requirements.
The T640 router supports the DC power supplies in
NOTE: Mixing power supplies with a different number of inputs in the same
router is supported only during upgrade. Mixing different types of power
supplies is not supported during normal operations.

Table 24: Supported Power Supplies

Name
Two-input 160-A DC power supply (EOL
PSN-2010-01-644)
See the "T640 Two-Input 160-A DC Power Supply
Description" on page 61.
Three-input 240-A DC power supply
See the "T640 Three-Input 240-A DC Power Supply
Description" on page 63.
NOTE: For the T640 router, this power supply is
supported only in mode.
2-INPUT
Four-input 240-A DC power supply
See the "T640 Four-Input 240-A DC Power Supply
Description" on page 66..
Six-input DC power supply
See the "T640 Six-Input DC Power Supply
Description" on page 69..
T640 Hardware Component Overview on page 11
Powering On a DC-Powered T640 Router on page 162
Maintaining the T640 Power Supplies on page 194
T640 DC Power System Electrical Specifications on page 427
Table 24 on page 60.
First
Supported
Junos OS
Model Number Release
PWR-T-DC 5.3
PWR-T1600-3-80-DC 8.5
PWR-T1600-4-60-DC 10.0
PWR-T-6-60-DC 12.1
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