Figure 14: DC Power Supply
The power supplies provide different output wattage to the services gatewaycomponents
according to the voltage requirements of the components.
The power supply components are listed in Table 23 on page 42.
Table 23: Component Power Output/Consumption
Output/ConsumptionPower Supply
This power supply can provide:
•
390 W at 12 V
•
255 W PoE on a single power supply, or with redundancy
using the two power supplies
•
510 W PoE using the two power supply option operating
as nonredundant
NOTE: Using the two power supply option operating as
nonredundant for up to 510 W PoE power, the administrator
has the ability to prioritize the PoE ports that will receive
power if an outage should occur to either the power source
or to one of the power supplies.
645 W AC power supply
This power supply can provide:
•
390 W at 12 V
•
255 W PoE on a single power supply, or with redundancy
using the two power supply option
•
510 W PoE using the two power supply option operating
as nonredundant
NOTE: Using the two power supply options operating as
nonredundant for up to 510 W PoE, the administrator has the
ability to prioritize the PoE ports that will receive power if an
outage should occur to either the power source or to one of
the power supplies.
645 W DC power supply
The DC power supply has connections for two DC power feeds labeled A and B, each
with a positive (+) and a negative (-) terminal. You can connect the DC power supply to
both the feeds. If either feed fails, the power supply draws all its power from the other
Copyright © 2016, Juniper Networks, Inc.42
SRX550 High Memory Services Gateway Hardware Guide
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