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SRX3400 Services Gateway DC Power Supply Electrical Specifications
Two types of DC power supply are available. The standard DC power supply has a maximum power output of 850 W. The enhanced DC power supply has a maximum power output of 1200 W, and also has additional filters required to meet NEBS and ETSI requirements. The two types of DC power supply are identical in all other respects. Each DC power supply has a single DC input (-48 VDC and return) that requires a dedicated 40 A (-48 VDC) circuit breaker. Table 22 lists the DC power supply electrical specifications.
Table 22: DC Power Supply Electrical Specifications
Item | Standard DC Power Supply | Enhanced DC Power Supply |
|---|---|---|
Maximum output power | 850 W | 1200 W |
DC input voltage | –40.5 to –72 VDC | –40.5 to –72 VDC |
DC input current rating | 22.2 A @ -48 VDC | 31.3 A @ -48 VDC |
 | Note: Mixing standard and enhanced DC power supplies within the same chassis is not supported. All installed DC power supplies must be either of standard or enhanced types. |
Each DC power supply faceplate displays a single LED to indicate the status of the power supply (see Table 23).
Table 23: 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 services gateway 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:
|
Blinking | The power supply has detected one or more of the following faults:
|
