Power Consumption for a DC-Powered SRX5600 Services Gateway

Note: If you plan to operate a maximally configured DC-powered services gateway, we recommend that you provision 58 A  (32 A per feed) @ –48 VDC for the system.

If you do not plan to provision 58 A  (32 A per feed) @ –48 VDC for the system, you can use the information in Table 36 and Table 37 to calculate the power consumption @ –48 VDC, and thermal output for various hardware configurations.

Table 36 lists the power requirements for base DC-powered devices operating under typical voltage conditions.

Table 36: DC-Powered Base System Requirements

DC Power Supply Configuration

Power Requirement (Watts)

Current Requirement (Amps @ –48 VDC)

Nonredundant configuration includes two DC power supplies, midplane, craft interface, and the fan tray (running at normal speed)

135 W (approximate)

2.8 A (approximate)

Redundant configuration includes four DC power supplies, midplane, craft interface, and the fan tray (running at normal speed)

180 W (approximate)

3.8 A (approximate)

Table 37 lists the power requirements for various hardware components when the services gateway is operating under typical voltage conditions.

Table 37: Component Power Requirements

Component

Power Requirement (Watts)

Current Requirement (Amps @ -48 VDC)

Fan tray (full speed) – Fan tray (normal speed)

110 W – 80 W =30 W

0.6 A

SCB

150 W

3.1 A

Routing Engine

90 W

1.9 A

IOC—Generalized typical value

312 W

6.5 A

IOC—Generalized maximum value

365 W

7.6 A

SPC—Generalized typical value

213 W

4.4 A

SPC—Generalized maximum value

351 W

7.3 A

Use the information in Table 36 and Table 37 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 generalized values per IOC. Typical power consumption for DC-powered devices:

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