Step 6: Connecting Power; Supplies - Juniper T640 Quick Start Manual

T640 Core Router Quick Start

Step 6: Connecting Power

Connecting Power to a T640 Router with Two-Input 160-A DC Power Supplies
22
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
To connect DC power cables to the router:
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. Make sure that the voltage across the
2.
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.
Verify that a licensed electrician has attached the cable lugs provided with the router
3.
to the DC power cables.
Verify that the router is properly grounded.
4.
Detach the ESD grounding strap from the approved site ESD grounding point, and
5.
connect the strap to one of the ESD points on the chassis.
Verify that the circuit breakers on the power supply faceplate are in the
6.
position.
Remove the clear plastic cover protecting the terminal studs on the power supply
7.
faceplate.
OFF (O)
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