Power Requirements for DC-Powered SRX1400 Services Gateways

Note: If you plan to operate a maximally configured DC-powered services gateway, we recommend that you provision 16 A @ -48 VDC for the system.

If you do not plan to provision 16 A @ -48 VDC for the system, you can use the information in Table 42 and Table 43 to calculate the power consumption @ -48 VDC, and thermal output for various hardware configurations.

Table 42 lists the power requirements for base DC-powered devices operating under typical voltage conditions.

Table 42: DC-Powered Base System Requirements

DC Power Supply Configuration

Power Requirement (Watts)

Nonredundant configuration includes DC power supply, backplane, SYSIOC, Routing Engine, and fan tray.

210 W (approximate)

Redundant configuration includes two DC power supplies, backplane, SYSIOC, Routing Engine, and fan tray.

222 W (approximate)

Note: The power requirement values shown in Table 42 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 210 W to the overall system power requirement.

Note: In the SRX1400 Services Gateways with 1-Gigabit Ethernet System I/O card, the base system power requirement is less by 5-6 watts than the SRX1400 devices with 10-Gigabit Ethernet System I/O card.

Table 43 lists the power requirements for various hardware components when the services gateway is operating under typical voltage conditions.

Table 43: Component DC Power Requirements

Component

Power Requirement (Watts)

NSPC

214 W

IOC

61 W (max.)

Use the information in Table 42 and Table 43 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.

Related Documentation