Juniper MX480 Hardware Manual page 202

Table 90: 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
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 91: Calculating Thermal Output
Power Supply
MX480 AC Normal-capacity (high-line)
MX480 AC High-capacity (high-line)
MX480 DC Normal-capacity
MX480 DC High-capacity
1
Zone 0 output.
SEE ALSO
AC Electrical Specifications for the MX480 Router | 49
DC Power Supply Electrical Specifications for the MX480 Router | 58
Power Supply Efficiency
85 %
89 %
~98 %
~98 %
Thermal Output (BTUs per hour)
1282 * 3.41 = 4372 BTU/hr
1225 * 3.41 = 4177 BTU/hr
1112 * 3.41 = 3792 BTU/hr
1112 * 3.41 = 3792 BTU/hr
1
Input Power Requirement
1282 W
1225 W
3
1112 W
3
1112 W
1
1
204
2