Juniper SRX550, Hardware Manual

Page: 46 / 220

Table 9: Component Power Output/Consumption
Output/Consumption 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 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 feed. This configuration provides the commonly
deployed A/B feed redundancy for the system. Table 10 on page 30 describes the connection terminals
on the DC power supply.
Table 10: DC Power Supply Terminals
Description Label Feed
RTN connection for Feed A A+ Feed A
-48VDC connection for Feed A A-
30