Srx1400 Services Gateway Dc Power Supply; Dc Power Supply Overview; Dc Power Supply Electrical Specifications - Juniper SRX1400 Hardware Manual

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SRX1400 Services Gateway DC Power Supply

Copyright © 2011, Juniper Networks, Inc.
Table 25: AC Power Supply LEDs (continued)
Color Status
Amber On steadily
Blinking
SRX1400 Services Gateway Power Supplies Overview on page 32
Installing an AC Power Supply in the SRX1400 Services Gateway on page 66
Maintaining Power Supplies on the SRX1400 Services Gateway on page 99
Troubleshooting the Power System on the SRX1400 Services Gateway on page 109
This topic includes the following sections:
DC Power Supply Overview on page 35
DC Power Supply Electrical Specifications on page 35
DC Power Supply LEDs on page 36

DC Power Supply Overview

In a DC power configuration, the SRX1400 Services Gateway contains one or two DC
power supplies, located at the front of the chassis in slots
supply provides power to all components in the services gateway. When two power
supplies are present, they share power almost equally within a fully populated system.
The two DC power supplies provide power redundancy. If one power supply fails or is
removed, the remaining power supply redistributes the electrical load without interruption.
NOTE: Only redundant DC power supply supports hot-removable and
hot-insertable functionality.

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 26 on page 36 lists the DC power supply
electrical specifications.
Chapter 2: SRX1400 Services Gateway Hardware Components
Condition Indicated
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 3.3
V output
The power supply has detected one or more of the following
faults:
Under-voltage condition on the 12 V output
Over-voltage condition on the 12 V output
Over-current condition on the 12 V output
PEM0 and PEM1 . Each power
35