Juniper SRX5800 Hardware Manual page 51

NOTE: The high-capacity power supply will operate with only one of its two AC inlets connected
to an AC power feed. However, its DC output will be limited to a maximum of 1700 W. We
recommend that you connect two AC power feeds to each high-capacity AC power supply.
NOTE: The services gateway must be running Junos OS Release 10.4 or later in order to use
high-capacity AC power supplies.
Each high-capacity AC power supply has an input mode switch, covered by a small metal plate. The input
mode switch tells the system the number of AC power feeds it should expect. The input mode switch
settings are described in
Table 15: High-Capacity AC Power Supply Input Mode Switch Settings
Mode Switch
Setting AC Inputs
1 Both AC inlets powered
Only one AC inlet powered
0 Both AC inlets powered
Only one AC inlet powered
NOTE: We recommend that you set the input mode switch to 1 and connect two AC input feeds
to each high-capacity AC power supply.
Table 15 on page 52. The default setting is 1.
Result
DC output of 4100 W
DC OK LED lights
DC output of 1700 W
DC OK LED lights
DC output of 4100 W
DC OK LED lights
DC output disabled
DC OK LED unlit
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