Juniper MX480, Hardware Manual

Page: 162 / 420

1
These values are at full load and nominal voltage.
2
For this configuration, total power is 1090 W.
3
Zone 0 requirement.
4.
Calculate thermal output (BTUs). To calculate this, multiply the input power
requirement (in watts) by 3.41.
Table 87: Calculating Thermal Output
Thermal Output (BTUs per hour) Power Supply
1282 * 3.41 = 4372 BTU/hr MX480 AC Normal-capacity (high-line)
1225 * 3.41 = 4177 BTU/hr MX480 AC High-capacity (high-line)
1112 * 3.41 = 3792 BTU/hr
1
MX480 DC Normal-capacity
1112 * 3.41 = 3792 BTU/hr
1
MX480 DC High-capacity
1
Zone 0 output.
See Also AC Electrical Specifications for the MX480 Router on page 47
•
•
DC Power Supply Electrical Specifications for the MX480 Router on page 55
MX480 Network Cable and Transceiver Planning
• Calculating Power Budget and Power Margin for Fiber-Optic Cables on page 162
• Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion on page 164
•
Routing Engine Interface Cable and Wire Specifications for MX Series Routers on page 166
Calculating Power Budget and Power Margin for Fiber-Optic Cables
Use the information in this topic and the specifications for your optical interface to
calculate the power budget and power margin for fiber-optic cables.
TIP: You can use the Hardware Compatibility Tool to find information about
the pluggable transceivers supported on your Juniper Networks device.
To calculate the power budget and power margin, perform the following tasks:
1.
Calculating Power Budget for Fiber-Optic Cable on page 163
2. Calculating Power Margin for Fiber-Optic Cable on page 163
Copyright © 2019, Juniper Networks, Inc. 162
MX480 Universal Routing Platform Hardware Guide