Calculating Power Requirements For Mx960 Routers - Juniper MX960 Hardware Manual

Calculating Power Requirements for MX960 Routers

Copyright © 2017, Juniper Networks, Inc.
The information in this topic helps you determine which power supplies are suitable for
various configurations, as well as which power supplies are not suitable because output
power is exceeded. You determine suitability by subtracting the total power draw from
the maximum output of the power supplies. Afterward, the required input current is
calculated. Finally, you calculate the thermal output. A sample configuration is provided
in Table 55 on page 101.
We recommend that you provision power according to the maximum input current listed
in the power supply electrical specifications (see
AC Power Supply" on page 151
Supply" on page 169).
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.
Chapter 12: AC Power Requirements, Specifications, and Guidelines
"Electrical Specifications for the MX960
and "Electrical Specifications for the MX960 DC Power
161