Figure 168: Installing A Three-Phase Wye Ac Power Distribution Module - Juniper MX2020 Hardware Manual

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Switch off ( ) the AC PSMs and disengage all AC PSMs.
3. O
Pull the locking levers on either side of the faceplate away until they stop.
4.
Using both hands, slide the PDM into the chassis until you feel resistance (see
5.
Figure 168 on page 329).
Push the lock levers completely into until they make contact with the PDM faceplate.
6.
Tighten the two captive screws on the locking levers of the PDM faceplate to secure
7.
the PDM in the chassis.
Using a number 2 Phillips (+) screwdriver, loosen the four screws on the cover of the
8.
metal wiring compartment that protects the AC terminal block.

Figure 168: Installing a Three-Phase Wye AC Power Distribution Module

Remove the cover of the metal AC wiring compartment.
9.
Unscrew the retaining nut from the AC power cord.
10.
Place the retaining nut inside the metal wiring compartment.
11.
Put the wires of the AC power cord through the hole of the retaining nut and rubber
12.
grommet.
Put the wires of the AC power cord through the hole of the metal wiring compartment.
13.
Connect the wires to the AC terminal block on the three-phase delta AC PDM (see
14.
Figure 169 on page 330). Loosen each of the input terminals or grounding point screws,
and insert the wire into the grounding point or input terminal, and tighten the screw
(see Table 92 on page 331
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 labeled
c. Insert the wire labeled
Chapter 22: Installing and Replacing Components
for approved AC wire gauge).
into the input terminal labeled
L1
L2 into the input terminal labeled
.
GND
.
A1
B1 .
329