Power System Components And Descriptions; Mx104 Power Overview; Ac Power Supplies - Juniper MX104 Hardware Manual

CHAPTER 6
Power System Components and
Descriptions

MX104 Power Overview

AC Power Supplies

Copyright © 2017, Juniper Networks, Inc.
MX104 Power Overview on page 61
MX104 Power Overview on page 63
The MX104 router uses either AC or DC power supplies (see
Figure 16 on page 62). The power supplies are located in the front of the chassis and offer
1+1 redundancy. Each power supply has a handle, an ejection tab, and a status LED.
CAUTION: The router cannot be powered from AC and DC power supplies
simultaneously.
When two power supplies are present, they share power almost equally within a fully
populated system. If one power supply in a redundant configuration fails or is removed,
the remaining power supply assumes the entire electrical load without interruption. A
single power supply provides the maximum configuration with full power for as long as
the router is operational. A second power supply can be installed for redundancy. Each
power supply is cooled by its own internal cooling system.
Redundant power supplies are hot-removable and hot-insertable. When you remove a
power supply from a router that uses only one power supply, the router might shut down
depending on your configuration.
AC Power Supplies on page 61
DC Power Supplies on page 62
Power Supply LEDs on page 62
Each AC power supply weighs approximately 2.5 lb (1.13 kg) and consists of a handle, a
power cord retainer clip, an ejection latch, an AC appliance inlet, a fan, and an LED to
monitor the status of the power supply.
Figure 15 on page 62
Figure 15 on page 62 shows the power supply.
and
61