Table 58: Four-Input 240-A Dc Power Supply Electrical Specifications; Table 59: Six-Input Dc Power Supply Electrical Specifications - Juniper T640 Hardware Manual

Table 59: Six-Input DC Power Supply Electrical Specifications

Item
DC input voltage
Copyright © 2013, Juniper Networks, Inc.
Table 57: T640 Three-Input 240-A DC Power Supply Electrical
Specifications (continued)
Item Specification
Input DC current Input 0: 67 A @ –48 VDC (nominal) (3216 W)
rating
Input 1: 67 A @ –48 VDC (nominal) (3216 W)
NOTE:
power supply.
Table 58 on page 429 lists the power supply electrical specifications for the four-input
240-A DC power supply.

Table 58: Four-Input 240-A DC Power Supply Electrical Specifications

Item
DC input voltage
Input DC current rating
Table 59 on page 429 lists the six-input DC power supply electrical specifications.
Appendix D: T640 Power Guidelines, Requirements, and Specifications
For a T640 router, do not use
Specification
Nominal –48 VDC, –60 VDC
Operating range: –40.0 to –72.0 VDC
NOTE:
source drops below -37.5 to -39.5 VDC, the
router 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.
Input 0: 47 A @ –48 VDC (nominal) (2256 W)
Input 1: 44 A @ –48 VDC (nominal) (2112 W)
Input 2: 50 A @ –48 VDC (nominal) (2400 W)
Input 3: 50 A @ –48 VDC (nominal) (2400 W)
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 router 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.
on a three-input 240-A DC
INPUT 2
If the input voltage from the DC power
429