Juniper T640 User Manual

Step 6: Connecting Power
CAUTION:
See the T640 Core Router Hardware Guide for special considerations and
connection procedures for the following power configurations for the six-input
power supply:
•
Five 60-A input feeds connecting to five inputs
•
Four 60-A input feeds connecting to four inputs
For all other power supplies and connecting six 60-A input feeds to six inputs, see the
following topics for connection procedures.
•
Connecting Power to a T640 Router with Two-Input 160-A DC Power
Supplies on page 22
•
Connecting Power to a T640 Router with Three-Input 240-A DC Power
Supplies on page 24
•
Connecting Power to a T640 Router with Four-Input 160-A DC Power
Supplies on page 28
•
Connecting Power to a T640 Router with Six-Input DC Power Supplies on page 30
•
Connecting Power to a T640 Router with Three-Phase Delta AC Power
Supplies on page 34
•
Connecting Power to a T640 Router with Three-Phase Wye AC Power
Supplies on page 36
Connecting Power to a T640 Router with Two-Input 160-A DC Power Supplies
To connect DC power cables to the router:
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to an approved site ESD grounding point. See the instructions for your site.
2. Switch off the customer site circuit breakers. Make sure that the voltage across the
DC power source cable leads is 0 V and that there is no chance that the cable leads
might become active during installation. Follow your site's instructions for safety.
3. Verify that a licensed electrician has attached the cable lugs provided with the router
to the DC power cables.
4. Verify that the router is properly grounded.
5. Detach the ESD grounding strap from the approved site ESD grounding point, and
connect the strap to one of the ESD points on the chassis.
6. Verify that the circuit breakers on the power supply faceplate are in the OFF (O)
position.
7. Remove the clear plastic cover protecting the terminal studs on the power supply
faceplate.
Copyright © 2015, Juniper Networks, Inc.22
T640 Core Router Quick Start

Juniper T640 Specifications

General

Brand	Juniper
Model	T640
Category	Network Router
Language	English