Power Requirements for AC-Powered SRX3400 Services Gateways

Note: If you plan to operate a maximally configured AC-powered services gateway, we recommend that you provision 6 A @ 240 VAC (or 14 A @ 100 VAC) for the system.

If you do not plan to provision 6 A @ 240 VAC (or 14 A @ 100 VAC) for the system, you can use the information in Table 39 and Table 40 to calculate power consumption for various hardware configurations, and thermal output.

Table 39 lists the power requirements for base AC-powered services gateways operating under typical voltage conditions. It includes the efficiency for the AC power supplies.

Table 39: Base System AC Power Requirements

Component

Power Requirement (Watts)

Nonredundant configuration includes AC power supply, midplane, SFB, Routing Engine, and the fan tray.

271 W (approximate)

Redundant configuration includes two AC power supplies, midplane, SFB, Routing Engine, and the fan tray.

310 W (approximate)

Note: The power requirement values shown in Table 39 are for a lightly loaded system. For a heavily loaded system, the contribution of the base system to the overall system power requirement is lower, because the power supply efficiency improves as the load increases. For a heavily loaded system, both the redundant and nonredundant base systems contribute approximately 271 W to the overall system power requirement.

Table 40 lists the power requirements for various hardware components when the services gateway is operating under typical voltage conditions.

Table 40: Component AC Power Requirements

Component

Power Requirement (Watts)

AC Input Power Requirement at 85% Power Supply Efficiency

Routing Engine

53 W

62 W

SPC

118 W

139 W

NPC

64 W

75 W

SCM

35 W

41 W

IOC (min)

40 W

47 W

IOC (max)

52 W

61 W

Use the information in Table 39 and Table 40 to calculate power consumption for various hardware configurations, input current from a different source voltage, and thermal output, as shown in the following examples. These examples use maximum values per IOC.

Typical power consumption for AC-powered services gateways:

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