Table 84: Calculating Power Budget for a MX480 AC Chassis
Unused Power
1
Maximum System Output Power
Power Supply
2071 W
3081 W
MX480 AC Normal-capacity (low-line)
2190 W
3200 W
MX480 AC Normal-capacity (high-line)
2491 W
3501 W
MX480 AC High-capacity (low-line)
3090 W
4100 W
MX480 AC High-capacity (high-line)
1
For this configuration, output power excluding the cooling system is 1360 W.
Table 85: Calculating Power Budget for a MX480 DC Chassis
Zone 1 Unused
Power
2
Zone 0 Unused
Power
1
Maximum System
Output Power
Power Supply
2430 W
2190 W
3200 W
MX480 DC Normal-capacity
4030 W
3790 W
4800 W
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.
4430W
4190W
5200 W
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.
1
For this configuration, output power excluding the cooling system is 1010 W.
2
For this configuration, output power excluding the cooling system is 770 W.
3.
Calculate input power. In this step, the input power requirements for the example
configuration are calculated. To do this, divide the total output requirement by the
efficiency of the power supply as shown in
.
Table 86: Calculating Input Power Examples
Input Power Requirement
2
Power Supply Efficiency
1
Power Supply
1282 W
85 %
MX480 AC Normal-capacity (high-line)
1225 W
89 %
MX480 AC High-capacity (high-line)
1112 W
3
~98 %
MX480 DC Normal-capacity
1112 W
3
~98 %
MX480 DC High-capacity
161
Copyright © 2019, Juniper Networks, Inc.
Chapter 2: Site Planning, Preparation, and Specifications
Содержание MX480
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