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Power Consumption for an AC-Powered MX960 Router
We recommend that you provision 11 A @ 240 VAC for each input.
For high capacity power supplies, we recommend that you provision 14 A for each input.
If you do not plan to provision as recommended above, you can use the information in Table 1 and Table 2 to calculate the power consumption and thermal output for your hardware configuration.
Table 1 lists the power requirements for base AC-powered routers operating under typical voltage conditions and includes nonredundant and redundant power supply configurations.
Table 1: AC Base Router Power Requirements
AC Power Supply Configuration | Power Requirement (Watts) |
|---|---|
Nonredundant AC configuration includes three AC power supplies, the midplane, craft interface, and fan trays (running at normal speed) | 471 W (approximate) |
Redundant AC configuration includes four AC power supplies, the midplane, craft interface, and fan trays (running at normal speed) | 500 W (approximate) |
| High-Capacity Power Supplies | |
Nonredundant AC configuration includes two high-capacity AC power supplies, the midplane, craft interface, and high-capacity fan trays (running at normal speed) | 588 W (approximate) |
Redundant AC configuration includes four high-capacity AC power supplies, the midplane, craft interface, and high-capacity fan trays (running at normal speed) | 708 W (approximate) |
Table 2 lists the power requirements for various hardware components under typical voltage conditions.
Table 2: Component Power Requirements for AC-Powered Routers
Component | Power Requirement (Watts) | Power Requirement (Watts) with 85% Efficiency |
|---|---|---|
Cooling system (full speed – normal speed) | 600 W – 400 W = 200 W | 235 W |
High-capacity cooling system | 640 W | 376 W |
SCB | 150 W | 176 W |
Routing Engine | 90 W | 106 W |
DPC—Generalized typical value | 312 W | 367 W |
DPC—Generalized maximum value | 365 W | 429 W |
FPC2 (without PICs) | 110 W | 130 W |
FPC3 (without PICs) | 180 W | 212 W |
MPC (fixed configuration) | 440 W | 518 W |
MPC (without MICs) | 294 W | 346 W |
These examples use generalized values for DPCs. For exact DPC, MPC, MIC, and PIC power requirements, see the MX Series 3D Universal Edge Routers Line Card Guide.
Typical power consumption for AC-powered routers:
- Power consumption for minimum
configuration:Base router and three power supplies + 2 SCBs + 1 Routing Engine + 1 DPC—Generalized typical value =471 W + (2)176 W + 106 W + 367 W = 1296 W
- AC Power consumption for maximum configuration:Base router and four power supplies + fan tray at full speed + 2 SCBs + 2 Routing Engines + 11 DPCs—Generalized maximum value = 500 W + 235 W + 2(176 W) + 2(106 W) + 11(429 W) = 500 W + 235 W + 352 W + 212 W + 4719 W = 6018 W
- Current requirement adjustment for fans running at full
speed (high temperature environment or cooling component failure):Calculated system current (X) – Cooling (normal) + Cooling (full speed) =X A – 8.3 A + 12.5 A =X A + 4.2 A
- Example of calculating system thermal output:Watts DC * 3.41 = BTU/hr6018 W * 3.41 = 20,521 BTU/hr
