Power Supplies; Ac Power Supply For A Qfx5100 Device; Chapter 4 Power Supplies - Juniper QFX5100 Hardware Manual

CHAPTER 4

Power Supplies

AC Power Supply for a QFX5100 Device

Copyright © 2016, Juniper Networks, Inc.
AC Power Supply for a QFX5100 Device on page 47
DC Power Supply in a QFX5100 Device on page 49
Grounding Cable and Lug Specifications for a QFX5100 Device on page 51
The QFX5100 switches are shipped from the factory with two power supplies. Each power
supply is a hot-removable and hot-insertable field-replaceable unit (FRU) when the
second power supply is installed and running. You can install replacement power supplies
in the two slots next to the fan modules without powering off the switch or disrupting
the switching function.
The AC power supply in 1 U QFX5100 switches is 650 W; the AC power supply in the 2 U,
QFX5100-96S switch, is 850 W. Both power supplies look identical. Be sure to use the
correct power supply for your chassis product SKU (see
CAUTION: Do not mix power supplies with different airflow or different
wattage. The system raises an alarm when a power supply having a different
airflow or wattage is inserted into the chassis.
See Figure 28 on page 48
an example of the 2 U power supply.
for an example of the 1 U design and
Table 12 on page 49).
Figure 29 on page 48 for
47