Figure 17: Ptx1000 Fru Panel; Figure 18: Ac Power Supply In A Ptx1000 - Juniper PTX1000 Hardware Manual

Copyright © 2018, Juniper Networks, Inc.

Figure 17: PTX1000 FRU Panel

1— Power supplies (4)

Figure 18: AC Power Supply in a PTX1000

1— Male power connector
2— Status LED
Each of the 1600-W power supplies has a single AC input. The power supply provides
12-VDC output with a standby voltage of 12 VDC. A PTX1000 provides for twice the
number of power supplies needed to power all of the components in the device, which
is known as 2N redundancy. When the PTX1000 has all four power supplies installed and
connected to power, the router has full power redundancy. If a power supply fails or is
removed, another power supply balances the electrical load without interruption.
The fan in the power supply provides port-to-FRU airflow, which is also known as airflow
out (AFO). A power supply with the label
port-to-FRU airflow.
CAUTION: To avoid electrical injury, carefully follow instructions in
"Connecting AC Power to the PTX1000" on page
Supply in a PTX1000" on page
PTX1000" on page
NOTE: For more information about power system redundancy, see
Component Redundancy" on page
2— Fan modules (3)
3— Ejector lever
4— Handle
or a gold-colored handle denotes
AFO
91, and "Removing a Power Supply from the
90.
21.
Chapter 1: Overview
73, "Installing a Power
"PTX1000
37