Table 28: Calculating Power Budget For A Mx480 Ac Chassis; Table 29: Calculating Power Budget For A Mx480 Dc Chassis; Table 30: Calculating Input Power Examples - Juniper MX480 Hardware Manual

MX480 3D Universal Edge Router Hardware Guide

Table 28: Calculating Power Budget for a MX480 AC Chassis

Power Supply
MX480 AC Normal-capacity (low-line)
MX480 AC Normal-capacity (high-line)
MX480 AC High-capacity (low-line)
MX480 AC High-capacity (high-line)

Table 29: Calculating Power Budget for a MX480 DC Chassis

Power Supply
MX480 DC Normal-capacity
MX480 DC High-capacity (DIP=0)
NOTE: The DIP switch position is expected input current;
the correct feeds must be present to obtain the desired
output power.
MX480 DC High-capacity (DIP=1)
NOTE: The DIP switch position is expected input current;
the correct feeds must be present to obtain the desired
output power.

Table 30: Calculating Input Power Examples

Power Supply
MX480 AC Normal-capacity (high-line)
MX480 AC High-capacity (high-line)
MX480 DC Normal-capacity
MX480 DC High-capacity
272
1
For this configuration, output power excluding the cooling system is 1360 W.
1
For this configuration, output power excluding the cooling system is 1360 W.
2
For this configuration, output power excluding the cooling system is 310 W.
Calculate input power. In this step, the input power requirements for the example
3.
configuration are calculated. To do this, divide the total output requirement by the
efficiency of the power supply as shown in
Power Supply Efficiency
85 %
89 %
~98 %
~98 %
Maximum System Output Power
3081 W
3200 W
3501 W
4100 W
Zone 0 Unused
Maximum System
Power
Output Power
3200 W 240 W
4800 W 1040 W
5200 W 1240 W
Table 30 on page
1
1
Unused Power
1721 W
1840 W
2141 W
2740 W
Zone 1 Unused
1 2
Power
1290 W
2090 W
2290 W
272.
Input Power Requirement
1694 W
1618 W
3
1469 W
3
1469 W
Copyright © 2011, Juniper Networks, Inc.
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