CAUTION: Verify that the airflow direction on the power supply handle
matches the directionof airflow in the chassis. Ensure that each power supply
you install in the chassis has the same airflow direction. If you install power
supplies with two different airflow directions, Junos OS raises an alarm. If
you need to convert the airflow pattern on a chassis, you must change out
all the fans and power supplies at one time to use the new direction.
Table 17 on page 51 shows the different power supplies and their direction of airflow.
Table 17: Airflow Direction in QFX5110 DC Power Supplies
Color of Power Supply HandleDirection of AirflowProduct Number
Juniper Azure BlueFRU-to-portJPSU-650W-DC-AFI
Juniper GoldPort-to-FRUJPSU-650W-DC-AFO
To avoid electrical injury, carefully follow the instructions in “Maintaining QFX5110 Power
Supplies” on page 110.
QFX5110 DC Power Specifications
Table 18 on page 51 describes the QFX5110 DC power specifications. The typical and
maximum power consumption values are calculated using dummy transceivers on all
ports. Traffic is run at 25° C ambient.
Table 18: DC Power Specifications for QFX5110
SpecificationsItem
•
Rated operating voltage: –39 VDC to –60 VDC
•
Operating voltage range: –40 VDC through –72 VDC
DC input voltage
–8.2 A at 39 VDCDC input current rating
Idle power consumption
•
150 W
•
250 W
•
QFX5110-48S
•
QFX5110-32Q
Typical power consumption
•
190 W
•
280 W
•
QFX5110-48S
•
QFX5110-32Q
Maximum power consumption
•
248 W
•
335 W
•
QFX5110-48S
•
QFX5110-32Q
51Copyright © 2019, Juniper Networks, Inc.
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