Dc Power Requirements And Specifications; T640 Dc Power System Electrical Specifications; Table 67: T640 Power System Electrical Specifications - Juniper T640 Hardware Manual

CHAPTER 10
DC Power Requirements and
Specifications

T640 DC Power System Electrical Specifications

Related
Documentation
Copyright © 2017, Juniper Networks, Inc.
T640 DC Power System Electrical Specifications on page 125
T640 DC Power Supply Electrical Specifications on page 126
T640 DC Power System Requirements on page 128
T640 DC Power Distribution on page 130
T640 DC Power Cable and Lug Specifications on page 132
Table 67 on page 125 lists the power system electrical specifications.

Table 67: T640 Power System Electrical Specifications

Item
DC input voltage
DC system current rating
T640 Power System Description on page 95
T640 DC Power Supply Electrical Specifications on page 126
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
Specification
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
–44.0 VDC, the router automatically starts up
again and the system returns to normal
operation within 30 minutes. No operator
intervention is required.
152 A @ –48 VDC (nominal) (7296 W)
125