T4000 Dc Power Supply Specifications; Table 47: Power Supply Electrical Specifications - Juniper T4000 Hardware Manual

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T4000 DC Power Supply Specifications

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Documentation
Copyright © 2013, Juniper Networks, Inc.
as required by local code. 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.
T4000 Power System Description on page 43
T4000 DC Power Supply Specifications on page 337
T4000 DC Power Requirements on page 338
T4000 DC Power Cable and Lugs Specifications on page 341
T4000 DC Power Distribution on page 343
Table 47 on page 337 lists the DC power supply electrical specifications.

Table 47: Power Supply Electrical Specifications

Item
DC input voltage
Input DC current rating (per input)
T4000 Power System Description on page 43
T4000 DC Power Requirements on page 338
T4000 DC Power Cable and Lugs Specifications on page 341
Appendix D: Power Guidelines, Requirements, and Specifications
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.
Input 0: 45 A @ –48 VDC (nominal) (2160 W)
(54 A @ –40 VDC)
Input 1: 56 A @ –48 VDC (nominal) (2688 W)
(67.2 A @ –40 VDC)
Input 2: 56 A @ –48 VDC (nominal) (2688 W)
(67.2 A @ –40 VDC)
Input 3: 56 A @ –48 VDC (nominal) (2688 W)
(67.2 A @ –40 VDC)
Input 4: 56 A @ –48 VDC (nominal) (2688 W)
(67.2 A @ –40 VDC)
Input 5: 56 A @ –48 VDC (nominal) (2688 W)
(67.2 A @ –40 VDC)
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