Installing An Mx2020 Three-Phase Wye Ac Power Cord - Juniper MX2020 Hardware Manual

Copyright © 2013, Juniper Networks, Inc.

Installing an MX2020 Three-Phase Wye AC Power Cord

To install a three-phase wye AC power cord:
Switch off the customer site circuit breakers to the PDM being removed. Make sure
1.
that the voltage across the AC power source cord is 0 V and that there is no chance
that the cord might become active during the installation process.
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 all the power switches on the PSM faceplates to the off (
3.
NOTE: After powering off a PSM, wait at least 60 seconds before turning
it back on.
Using a number 2 Phillips (+) screwdriver, loosen the four screws on the cover of the
4.
metal wiring compartment that protects the AC terminal block.
Remove the cover of the metal AC 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 PDM (see
10.
139 on page 300). Loosen each of the input terminal or grounding point screws, and
insert the wire into the grounding point or input terminal.
To insert wires into the terminal block that serves six PSMs:
a. Insert the grounding wire into the grounding point labeled
b. Insert the wire into the input terminal labeled
c. Insert the wire into the input terminal labeled
d. Insert the wire into the input terminal labeled
e. Insert the wire into the input terminal labeled
Chapter 13: Replacing MX2020 Router Hardware Components
.
A1
B1 .
.
C1
N1 .
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Figure
GND .
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