Juniper MX480 - Table 93: Calculating Power Budget for a MX480 AC Chassis; Table 94: Calculating Power Budget for a MX480 DC Chassis; Table 95: Calculating Input Power Examples

Table 93: Calculating Power Budget for a MX480 AC Chassis
Unused Power
1
MaximumSystemOutputPowerPower Supply
2071 W3081 WMX480 AC Normal-capacity (low-line)
2190 W3200 WMX480 AC Normal-capacity (high-line)
2491 W3501 WMX480 AC High-capacity (low-line)
3090 W4100 WMX480 AC High-capacity (high-line)
1
For this configuration, output power excluding the cooling system is 1360 W.
Table 94: Calculating Power Budget for a MX480 DC Chassis
Zone 1 Unused
Power
2
Zone 0 Unused
Power
1
Maximum System
Output PowerPower Supply
2430 W2190 W3200 WMX480 DC Normal-capacity
4030 W3790 W4800 WMX480 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.
4430W4190W5200 WMX480 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 84 on page 152.
Table 95: Calculating Input Power Examples
Input Power Requirement
2
Power Supply Efficiency
1
Power Supply
1282 W85 %MX480 AC Normal-capacity (high-line)
1225 W89 %MX480 AC High-capacity (high-line)
1112 W
3
~98 %MX480 DC Normal-capacity
1112 W
3
~98 %MX480 DC High-capacity
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MX480 3D Universal Edge Router Hardware Guide