Table 50: Details Of The Dc Power Supplies In Ex4300 Switches - Juniper QFabric QFX3000-G Hardware Documentation

QFX3000-G QFabric System Hardware Documentation

Table 50: Details of the DC Power Supplies in EX4300 Switches

Details
Model number
Field-replaceable unit (FRU) type
Power supply weight
Minimum installed in chassis
Maximum installed in chassis
Power supply slots
Fans
Airflow
Power supply status LEDs
DC input current rating
Operating range
DC Power Supply Airflow
172
550 W DC Power Supply
JPSU-550-DC-AFO-A
JPSU-550-DC-AFI-A
Hot-insertable and hot-removable
2.43 lb (1.1 kg)
1
2
Install in power supply slots labeled
the chassis.
Internal
Front-to-back, indicated by label
Back-to-front, indicated by label
IN OK
4 A
–38 through –60 VDC
NOTE:
–43.5 +/– 0.5 VDC. After the switch is powered on, the operating range is
–38 through –60 VDC.
To prevent electrical injury while installing or removing DC power supplies, carefully follow
instructions in Installing a DC Power Supply in an EX4300 Switch and Removing a DC
Power Supply from an EX4300 Switch.
Each power supply has its own fan and is cooled by its own internal cooling system.
Each power supply has a label
power supply that indicates the direction of airflow in the power supply.
Table 51 on page 173 lists the DC power supply models and the direction of airflow in
them.
and
OUT OK
The minimum input power required to power on the switch is
or
AIR OUT (AFO) AIR IN (AFI)
and in the rear panel of
PSU 0 PSU 1
AIR OUT (AFO)
AIR IN (AFI)
on the faceplate of the
Copyright © 2018, Juniper Networks, Inc.