Power Supplies; Ac Power Supply In Ex4500 Switches; Chapter 4 Power Supplies - Juniper EX4500 Hardware Manual

CHAPTER 4

Power Supplies

AC Power Supply in EX4500 Switches

Copyright © 2017, Juniper Networks, Inc.
AC Power Supply in EX4500 Switches on page 39
AC Power Supply LEDs in EX4500 Switches on page 41
DC Power Supply in EX4500 Switches on page 42
DC Power Supply LEDs in EX4500 Switches on page 44
The AC power supply in EX4500 switches is a hot-insertable and hot-removable
field-replaceable unit (FRU): You can install it without powering off the switch or
disrupting the switching function.
EX4500 switches ship with an AC power supply that gives an output of 1000 W at
low-voltage line (100–120 VAC) and 1200 W at high-voltage line (200–240 VAC). You
can install a second power supply in the switch too.
Power supplies are installed at the rear of the chassis in slots labeled 1 and 0. Both power
supplies are accessible from the rear of the chassis.
WARNING: The switch is pluggable type A equipment installed in a
restricted-access location. It has a separate protective earthing terminal
provided on the chassis in addition to the grounding pin of the power supply
cord. This separate protective earthing terminal must be permanently
connected to earth ground. See
Switch" on page 135
Each AC power supply weighs approximately 3 lb (1.3 kg) and has an independent 12 A
rated AC appliance inlet on its front. Each inlet requires a dedicated AC power feed. Each
AC power supply has a fan, a bicolor LED on the faceplate that indicates the status of
the power supply, and a colored ejector lever. See
"Connecting Earth Ground to an EX Series
Figure 21 on page 40.
39