Juniper MX960 Hardware Guide

CHAPTER 13
DC Power Requirements, Specifications, and
Guidelines
IN THIS CHAPTER
Electrical Specifications for the MX960 DC Power Supply | 225
Power Requirements for an MX960 Router | 227
Calculating Power Requirements for MX960 Routers | 237
DC Power Circuit Breaker Requirements for the MX960 Router | 241
DC Power Source Cabling for the MX960 Router | 242
DC Power Cable Specifications for the MX960 Router | 243
Electrical Specifications for the MX960 DC Power Supply
Table 97 on page 225 lists the DC power supply electrical specifications.
Table 97: Power Supply Electrical Specifications
SpecificationItem
Normal-Capacity Power Supplies
2800 WMaximum output power
58 A @ –48 V nominal operating voltageDC input current rating
70 AMaximum input current
Operating range: –40 to –72 VDC
Nominal: –48 VDC
DC input voltage
140.5 A for both feeds at nominal -48VMaximum DC inrush
current
225

Juniper MX960 Specifications

General

Power Supply	AC or DC
Redundancy	Yes
Operating System	Junos OS
Form Factor	Rack-mountable
Operating Humidity	5% to 90% non-condensing
Chassis Type	Modular
Slots	12
Interfaces/Ports	Varies with line cards
Operating Temperature	0°C to 40°C (32°F to 104°F)
Routing Engine	Redundant Routing Engines
Interfaces	Supports various interface modules