M120 Router Dc Power Specifications And Requirements; Electrical Specifications For The M120 Dc Power Supply; Table 28: Dc Power Supply Electrical Specifications - Juniper Networks Hardware Manual

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M120 Router DC Power Specifications and Requirements

Electrical Specifications for the M120 DC Power Supply

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Copyright © 2010, Juniper Networks, Inc.
All manuals and user guides at all-guides.com
Appendix D: Power Guidelines, Requirements, and Specifications for the M120 Router
CAUTION: Power cords and cables must not block access to router
components or drape where people could trip on them.
M120 AC Power Supply Description on page 29
Replacing an M120 AC Power Supply on page 173
Replacing an M120 AC Power Supply Cord on page 182
Connecting Power to an AC-Powered M120 Router on page 89
Electrical Specifications for the M120 DC Power Supply on page 233
M120 DC Power, Connection, and Cable Specifications on page 234
Table 28 on page 233 lists the DC power supply electrical specifications.

Table 28: DC Power Supply Electrical Specifications

Item
Maximum output power
DC input voltage
DC input current rating
Internal Supplementary
Protector
M120 DC Power Supply Description on page 31
M120 DC Power Supply LEDs on page 32
Replacing an M120 DC Power Supply on page 177
DC Power Electrical Safety Guidelines for the M120 on page 217
Specification
2100 W
Nominal: –48 VDC, –60 VDC
Operating range: –40.0 to –72 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.
60 A @ –48 VDC
60 A
233