Supplies - Juniper T640 Hardware Manual

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Connecting AC Power to a T640 Router with Three-Phase Delta AC Power Supplies
Copyright © 2010, Juniper Networks, Inc.
NOTE: If any of the output status LEDs do not light steadily, repeat the
installation and cabling procedures.
On the external management device connected to the Routing Engine, monitor the
11.
startup process to verify that the system has booted properly.
NOTE: The Routing Engine boots as the power supply completes its startup
sequence. If the Routing Engine finishes booting and you need to power off
the system, see "Powering Off a T640 Router" on page 136.
Setting the Input Mode Switch on a Three-Input 240-A DC Power Supply for a T640
Router on page 247
Powering Off a T640 Router on page 136
T640 Preventing Electrostatic Discharge Damage on page 306
General Electrical Safety Guidelines and Electrical Codes for M Series, MX Series, and
T Series Routers on page 324
Site Electrical Wiring Guidelines for M Series and T Series Routers on page 346
You connect AC power to the router with three-phase delta AC power supplies by
connecting the AC power cord from an AC power supply to an AC power source.
To connect an AC power cord to an AC power source:
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to an approved site ESD grounding point. See the instructions for your site.
Switch off the customer site circuit breakers. Ensure that the voltage across the AC
2.
power source is 0 V and that there is no chance that the voltage might become active
during installation.
Detach the ESD grounding strap from the approved site ESD grounding point, and
3.
connect the strap to one of the ESD points on the chassis.
Switch the power switch on the power supply faceplate to the standby position.
4.
Using a number 2 Phillips (+) screwdriver, unscrew the two captive screws located
5.
on the right side of the metal AC wiring compartment.
Open the metal door of the metal AC wiring compartment.
6.
Unscrew the retaining nut from the AC power cord.
7.
Place the retaining nut inside the metal wiring compartment.
8.
Put the wires of the AC power cord through the hole of the metal wiring compartment.
9.
Chapter 13: Providing Power to the T640 Router
131