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

MX2020 3D Universal Edge Router Hardware Guide
Related
Documentation

Installing an MX2020 Three-Phase Wye AC Power Distribution Module

328
Switch on the customer site circuit breakers to provide voltage on the AC power cord.
21.
Remove the ESD grounding strap from the approved site ESD grounding point. See
22.
the instructions for your site. Reconnect the strap to one of the ESD points on the
chassis.
Verify that the LED on the PDM faceplate is lit steadily, indicating that the AC terminal
23.
block is receiving power.
Switch the power switch on all the PSMs to the on (
24.
the router components.
MX2020 Three-Phase Delta AC Power Distribution Module Description on page 86
MX2020 Three-Phase Delta AC Power Distribution Module Specifications on page 163
Removing an MX2020 Three-Phase Delta AC Power Distribution Module on page 510
Each three-phase wye AC PDM weighs approximately 12 lb (5.44 kg). To install a
three-phase wye AC PDM:
WARNING: Before performing AC power procedures, disconnect all power
sources. To ensure that all power is off, locate the circuit breaker on the panel
board that services the AC circuit, switch the circuit breaker to the off position,
and tape the switch handle of the circuit breaker in the off position.
CAUTION: To maintain proper cooling and prevent thermal shutdown of the
operating power supply unit, each PDM slot must contain either a PDM or a
blank panel. If you remove a PDM, you must install a replacement PDM or a
blank panel shortly after the removal.
NOTE: After powering off a PDM, wait at least 60 seconds before turning
the circuit breaker back on.
NOTE: The PDMs are hot swappable in a redundant configuration. However,
you cannot switch from one type of PDU (AC or DC) to another while the
system is on.
Make sure that the voltage across the AC power source cord is 0 V and that there is
1.
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.
) position to provide power to
|
Copyright © 2015, Juniper Networks, Inc.