Installing An Mx2020 Three-Phase Wye Ac Power Cord; Table 43: Cable And Wire Specifications For Routing Engine Management And - Juniper MX2020 Hardware Manual

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Installing an MX2020 Three-Phase Wye AC Power Cord

Copyright © 2015, Juniper Networks, Inc.
Table 43: Cable and Wire Specifications for Routing Engine Management
and Alarm Interfaces
Cable
Port Specification
Routing Engine RS-232
console or (EIA-232) serial
auxiliary cable
interface
Routing Engine Category 5 cable
Ethernet or equivalent
interface suitable for
100Base-T
operation
Alarm relay Wire with gauge
contacts between
28-AWG and
14-AWG (0.08
and 2.08 mm
MX2020 Host Subsystem Description on page 57
Removing an MX2020 CB-RE on page 419
Installing an MX2020 CB-RE on page 301
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.
Chapter 11: Transceiver and Cable Specifications
Cable/Wire Maximum
Supplied Length
One 6-ft 6 ft (1.83 m)
(1.83-m) length
with RJ-45/DB-9
connectors
One 15-ft 328 ft (100 m)
(4.57-m) length
with
RJ-45/RJ-45
connectors
No None
2
)
Router
Receptacle
RJ-45 female
RJ-45
autosensing
—
) position.
O
131