Connecting Ac Power To An Mx2020 Router With Three-Phase Delta Ac Power Distribution Modules; Put The Wires Of The Ac Power Cord Through The Hole Of The Retaining Nut And Rubber Grommet; Connect The Wires To The Ac Terminal Block On The Three-Phase Delta Ac Pdm - Juniper MX2020 Hardware Manual

Connecting AC Power to an MX2020 Router with Three-Phase Delta AC Power
Distribution Modules
Copyright © 2015, Juniper Networks, Inc.
CAUTION: Do not mix AC and DC power modules within the same router.
WARNING: Power connections must be performed by a licensed electrician
only.
You connect AC power to the router with three-phase delta AC PDMs by connecting the
AC power cord from an AC PDM to an AC power source.
To connect an AC power cord to an AC power source:
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 dedicated customer site circuit breakers. Ensure that the voltage across
2.
the AC power source cable leads is 0 V and that there is no chance that the cable
leads might become active during installation.
Detach the ESD grounding strap from the approved site ESD grounding point, and
3.
connect the strap to one of the ESD points on the chassis.
Switch the power switches on all the PSM faceplates to the off (
4.
Verify that the correct three-phase delta PDMs are installed and secured in the chassis
5.
before connecting power cables.
NOTE: The power cables must be uninstalled and removed from the
three-phase delta PDM before removal of the PDM from the chassis.
Using a number 2 Phillips (+) screwdriver, unscrew the four captive screws located
6.
on the either side of the metal AC wiring compartment (four screws total per PDM).
Remove the metal cover of the metal AC wiring compartment.
7.
Unscrew the retaining nut from the AC power cord.
8.
Put the wires of the AC power cord through the hole of the retaining nut and rubber
9.
grommet.
Put the wires of the AC power cord through the hole of the metal wiring compartment.
10.
Connect the wires to the AC terminal block on the three-phase delta AC PDM (see
11.
Figure 118 on page 250). Loosen the input terminal or grounding point screw, insert each
wire into the grounding point input terminal, and tighten the screw (see
Table 78 on page 251 for approved AC wire gauge).
Chapter 19: Connecting the Router to Power
O ) position.
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