Ex4500 Power System; Ac Power Supply In Ex4500 Switches - Juniper EX4500 Hardware Manual

EX4500 Power System

IN THIS SECTION
AC Power Supply in EX4500 Switches | 58
AC Power Supply LEDs in EX4500 Switches | 60
AC Power Supply Specifications for EX4500 Switches | 61
AC Power Cord Specifications for an EX4500 Switch | 62
DC Power Supply in EX4500 Switches | 66
DC Power Supply LEDs in EX4500 Switches | 67
DC Power Specifications for EX4500 Switches | 68

AC Power Supply in EX4500 Switches

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:
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
Ground to an EX Series Switch" on page 121
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
Figure 21 on page 59.
The switch is pluggable type A equipment installed in a restricted-access
58
"Connect Earth