Juniper T640 - Table 70: Four-Input 240-A DC Power Supply Electrical Specifications; Table 71: Six-Input DC Power Supply Electrical Specifications

Table 70: Four-Input 240-A DC Power Supply Electrical Specifications
SpecificationItem
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.
DC input voltage
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)
Input DC current rating
Table 71 on page 127 lists the six-input DC power supply electrical specifications.
Table 71: Six-Input DC Power Supply Electrical Specifications
SpecificationItem
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.
DC input voltage
Input 0: 45 A @ –48 VDC (nominal) (2160 W)
Input 1: 56 A @ –48 VDC (nominal) (2448 W)
Input 2: 56 A @ –48 VDC (nominal) (2448 W)
Input 3: 56 A @ –48 VDC (nominal) (2448 W)
Input 4: 56 A @ –48 VDC (nominal) (2448 W)
Input 5: 56 A @ –48 VDC (nominal) (2448 W)
Input DC current rating
Related
Documentation
T640 Power System Description on page 95•
• T640 DC Power System Electrical Specifications on page 125
127Copyright © 2017, Juniper Networks, Inc.
Chapter 10: DC Power Requirements and Specifications