Connecting Ac Power To An Mx2020 Router With Three-Phase Wye Ac Power Distribution Modules - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide
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Connecting AC Power to an MX2020 Router with Three-Phase Wye AC Power
Distribution Modules
252
Verify that the power cable connections are correct.
12.
Screw the retaining nut onto the AC power cord to secure it to the metal wiring
13.
compartment.
Reinstall the metal PDM wiring cover, and using a number 2 Phillips (+) screwdriver,
14.
tighten the four captive screws on the metal AC wiring compartment. Apply between
10 lb-in. (1.13 Nm) to 12 lb-in. (1.35 Nm) of torque to each screw. Do not overtighten
the screws.
Use the provided plastic cable tie to fasten the AC power cord to the PDM.
15.
Verify that the AC power cord is not touching or blocking access to router components,
16.
and that it does not drape where people could trip on it.
Repeat the procedure for the other three-phase delta AC PDMs.
17.
MX2020 Three-Phase Delta AC Power Distribution Module Description on page 86
MX2020 Three-Phase Delta and Wye AC Power Distribution Module LEDs on page 91
Powering On the AC-Powered MX2020 Router on page 260
MX2020 AC Power Subsystem Electrical Specifications on page 158
MX2020 AC Power Cord Specifications on page 154
Preventing Electrostatic Discharge Damage to an MX2020 Router on page 558
CAUTION: Do not mix AC and DC power modules within the same router.
WARNING: Power connections must be performed by a licensed electrician
only.
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.
) position.
O
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