Calculating Power Requirements For The Srx5400 Services Gateway - Juniper SRX5400 Hardware Manual

Table 26: Site Preparation Checklist (continued)
Item or Task
Plan rack or cabinet location, including
required space clearances.
Plan electrical power provisions.
If a rack is used, secure rack to floor and
building structure.
Acquire cables and connectors.
Locate sites for connection of system
grounding.
Measure distance between external power
sources and services gateway installation site.
Calculate the optical power budget and
optical power margin.
Related
Documentation

Calculating Power Requirements for the SRX5400 Services Gateway

Copyright © 2017, Juniper Networks, Inc.
For More Information ...
"Clearance Requirements for SRX5400 Services
Gateway Airflow and Hardware Maintenance" on
page 101
"Calculating Power Requirements for the SRX5400
Services Gateway" on page 93
"Connection to Building Structure for the SRX5400
Services Gateway Rack" on page 100
DC Power Electrical Safety Guidelines and Warnings
"Calculating Power Budget for Fiber-Optic Cable for the
SRX5400 Services Gateway" on page 126,"Calculating
Power Margin for Fiber-Optic Cable for the SRX5400
Services Gateway" on page 126
Overview of Installing the SRX5400 Services Gateway on page 131
Unpacking the SRX5400 Services Gateway on page 133
The information in this topic helps you determine which power supply configurations are
suitable for various services gateway configurations, as well as which configurations 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.
We recommend that you provision power according to the maximum input current listed
in the power supply electrical specifications (see
Supply Specifications" on page 111
Specifications" on page 115).
Use the following procedures to calculate the power requirement:
Calculate the power requirement.
1.
Evaluate the power budget.
2.
Chapter 7: Planning and Preparing the Site
"SRX5400 Services Gateway AC Power
and "SRX5400 Services Gateway DC Power Supply
Performed
By Date
93