Juniper SRX5400 Hardware Manual page 44

Services Gateway AC Power Supply Specifications" on page 46
Supply Specifications" on page
Table 13: Power Supply Type Summary
Power Supply
Type Input Condition (If Any)
AC Low-line (110 V Input)
High-line (220 V Input)
DC DIP=0 (60 A Input)
DIP=1 (80 A Input)
In all power supply configurations, the power distribution and total power is shared by all of the components
in the services gateway chassis. The power supplies are guaranteed to provide adequate power to the
system. In the low-line (110VAC input) and high-line (220VAC input) configurations, two power supplies
are required to support the services gateway electrical requirements. Although the services gateway is
configurable with three AC (2+1) power supplies, you can add a fourth power supply for fault tolerance.
The fourth power supply is used when one of the power supplies in the 2+1 configuration fails.
NOTE: There are no slot restrictions for AC power supplies. If you are using DC power supplies,
then use the slots as shown in
Table 14: PSU Slot Restrictions
PSU
110V AC PSU
220V AC PSU
DC PSU
52.
Table 14 on page
Minimum PSU
Requirement PEM Slot
2 Any
2 Any
1 PEM0 & PEM2
or "SRX5400 Services Gateway DC Power
Maximum Output
1167 W
2050 W
2240 W
2440 W
45.
PSU Redundancy
Requirements
3
3
2
45
Redundancy
2+1
2+1
1+1
1+1
PEM Slot
Any
Any
PEM2