T1600 Three-Input 240-A Dc Power Supply Specifications - Juniper T1600 Hardware Manual

T1600 Core Router Hardware Guide
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T1600 Three-Input 240-A DC Power Supply Specifications

350
For each three-input 240-A power supply, we recommend that you provision at least
67 A @ –48 VDC per input in . Although
requires less power, we recommend provisioning the same amount of power for each
input to avoid the possibility of connecting the lower-powered DC cable to
2 .
For each four-input 240-A power supply, we recommend that you provision at least 50 A
@ –48 VDC per input . Although
require less power, we recommend provisioning the same amount of power for each
input to avoid the possibility of connecting the lower-powered DC cables to
.
Input 3
You must provision a circuit breaker for each DC power supply input rated for at least
125% of the continuous current that the system draws at –48 VDC.
T1600 Power System Description on page 59
Connecting DC Power to the T1600 Router on page 134
T1600 Site Preparation Requirements Checklist on page 75
Table 45 on page 350 lists the three-input 240-A DC power supply electrical specifications.
Table 45: Power Supply Electrical Specifications
Item
DC input voltage
in the three-input 240-A power supply
Input 0
and in the four-input 240-A power supply
Input 0 Input 1
Specification
Nominal –48 VDC, –60 VDC
Operating range: –40.0 to –72.0 VDC
NOTE: If the input voltage from the DC power
source drops below -37.5 to -39.5 VDC, the
routing platform automatically shuts down.
During automatic shutdown, the circuit remains
active. When the input voltage returns to –43.0
to –44.00 VDC, the router automatically starts
up again and the system returns to normal
operation within 30 minutes. No operator
intervention is required.
Copyright © 2010, Juniper Networks, Inc.
or
Input 1 Input
or
Input 2