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

MX2020 3D Universal Edge Router Hardware Guide

Calculating DC Power Requirements for MX2020 Routers

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MX2020 DC Power Distribution Module Description on page 94
MX2020 DC Power Supply Module Description on page 96
MX2020 DC Power Electrical Safety Guidelines on page 585
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 68 on page
"MX2020 DC Power Subsystem
179).
Copyright © 2015, Juniper Networks, Inc.
181.