Technical Documentation

SRX3400 Services Gateway DC Power Supply Electrical Specifications

Each DC power supply has a single DC input (-48 VDC and return) that requires a dedicated 40 A (-48 VDC) circuit breaker. Table 1 lists the DC power supply electrical specifications.

Table 1: DC Power Supply Electrical Specifications

Parameter

Specification

Maximum output power

850 W

DC input voltage

–40.5 to –72 VDC

DC input current rating

22.2 A @ -48 VDC

Each DC power supply faceplate displays a single LED to indicate the status of the power supply (see Table 2).

Table 2: DC Power Supply LED

Color

LED Status

Indicated Condition

Green

On steadily

DC input voltage is present, and both main 12V output and standby 3.3V output are enabled and healthy.

Blinking

DC input voltage is present, standby 3.3V output is on, but the main 12V output is disabled. This condition usually indicates that the device has been powered off at the Power button on the SFB front panel. It may also indicate that either the SFB or Routing Engine has been removed from the services gateway.

Red

On steadily

The power supply has detected one or more of the following faults:

  • Power supply fan failure
  • Power supply over-temperature condition
  • Over-current or under-voltage condition on the standby 3.3V output

Blinking

The power supply has detected one or more of the following faults:

  • Under-voltage condition on the 12V output
  • Over-voltage condition on the 12V output
  • Over-current condition on the 12V output

Published: 2010-04-20