Installing A T640 Three-Phase Delta Ac Power Supply Cord - Juniper T640 Hardware Manual

Copyright © 2013, Juniper Networks, Inc.

Installing a T640 Three-Phase Delta AC Power Supply Cord

To install a three-phase delta AC power supply cord:
Make sure that the voltage across the AC power source cord leads is 0 V and that
1.
there is no chance that the cord might become active during installation.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to one of the ESD points on the chassis.
Switch the power switch on the power supply faceplate to the standby position.
3.
Using a number 2 Phillips (+) screwdriver, loosen the two screws on the door of the
4.
metal wiring compartment that protects the AC terminal block.
Open the door of the metal wiring compartment.
5.
Unscrew the retaining nut from the AC power cord.
6.
Place the retaining nut inside the metal wiring compartment.
7.
Put the wires of the AC power cord through the hole of the metal wiring compartment.
8.
Screw the retaining nut onto the AC power cord to secure it to the metal wiring
9.
compartment.
Insert the wires to the AC terminal block on the three-phase delta AC power supply
10.
(Figure 223 on page 364). Loosen each of the input terminal or grounding point screws,
and insert the wire into the grounding point or input terminal.
NOTE: The terminal connections have either slotted screws or hex screws.
Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in
(4-mm) Allen wrench for the 5/16-in hex screws.
Insert the wire labeled
a.
Insert the wire labeled
b.
Insert the wire labeled
c.
Insert the wire labeled
d.
Verify that the power cord wire connections are correct.
11.
Using a number 2 Phillips (+) screwdriver, tighten the two captive screws on the metal
12.
AC wiring compartment.
Verify that the AC power cord is not touching or blocking access to router components,
13.
and that it does not drape where people could trip on it.
Remove the ESD grounding strap from the ESD points on the chassis. Connect the
14.
strap to an approved site ESD grounding point. See the instructions for your site.
Connect the AC power cord plug to the power source.
15.
Switch on the customer site circuit breakers to provide voltage to the AC power cord.
16.
Chapter 17: Replacing T640 Router Hardware Components
into the grounding point labeled
GND
L1 into the L1 input terminal
into the input terminal.
L2 L2
LC3 into the LC3 input terminal.
.
GND
363