Calculating Dc Power Requirements For Mx2020 Routers - Juniper MX2020 Hardware Manual

Related
Documentation

Calculating DC Power Requirements for MX2020 Routers

Copyright © 2013, Juniper Networks, Inc.
Appendix D: Power Guidelines, Requirements, and Specifications for the MX2020 Router
MX2020 Power Subsystem Description on page 39
Connecting Power to a DC-Powered MX2020 Router with Power Distribution Modules
on page 131
MX2020 DC Power Subsystem Electrical Specifications on page 357
MX2020 DC Power Distribution on page 359
The information in this topic helps you determine which PSMs are suitable for various
configurations, as well as which PSMs are not suitable because output power is exceeded.
You determine suitability by subtracting the total power draw from the maximum output
of the PSMs. Afterward, you calculate the required input current. Finally, you calculate
the thermal output. A sample configuration is provided in
We recommend that you provision power according to the maximum input current listed
in the power subsystem electrical specifications (see
Electrical Specifications" on page
Use the following procedures to calculate the power requirement:
Calculate the power requirement.
1.
Evaluate the power budget.
2.
Calculate input power.
3.
Calculate thermal output (BTUs) for cooling requirements.
4.
Table 49 on page
"MX2020 DC Power Subsystem
357).
366.
365