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Power Requirements for DC-Powered SRX3400 Services Gateways

Note: If you plan to operate a maximally configured DC-powered Services Gateway, we recommend that you provision 65 A @ –48 VDC for the system, or at least 48 A @ –48 VDC for each power supply.

If you do not plan to provision 65 A @ –48 VDC for the system, or at least 48 A @ –48 VDC for each power supply, you can use the information in Table 30 and Table 31 to calculate the power consumption @ –48 VDC, and thermal output for various hardware configurations.

Table 30 lists the power requirements for base DC-powered devices operating under typical voltage conditions.

Table 30: DC-Powered Base System Requirements

DC Power Supply Configuration

Power Requirement (Watts)

Current Requirement (Amps @ –48 VDC)

Nonredundant configuration includes one DC power supply, midplane, SFB, one RE and the fan tray

288 W (approximate)

6 A (approximate)

Redundant configuration includes two DC power supplies, midplane, SFB, one RE, and the fan tray

310 W (approximate)

6.5 A (approximate)

Table 31 lists the power requirements for various hardware components when the Services Gateway is operating under typical voltage conditions.

Table 31: Component Power Requirements

Component

Power Requirement (Watts)

Current Requirement (Amps @ –48 VDC)

Routing Engine

66 W

1.38 A

SPC

148 W

3.10 A

NPC

80 W

1.67 A

IOC (max)

65 W

1.35 A

IOC (min)

50 W

1.00 A

Use the information in Table 30 and Table 31 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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