Tx Matrix Router - Juniper TX MATRIX Hardware Manual

TX Matrix Hardware Guide
Related
Documentation
Connecting Power to a Three-Input 240-A Power Supply In 2-INPUT Mode in a TX
Matrix Router
128
TX Matrix Two-Input 160-A Power Supply Overview on page 41
Tools and Parts Required for Connecting the TX Matrix Router to Power on page 126
Powering On the TX Matrix Router on page 130
TX Matrix Preventing Electrostatic Discharge Damage on page 298
To connect the DC source power cables to a three-input 240-A power supply in
mode:
Ensure that the voltage across the DC power source cable leads is 0 V and that there
1.
is no chance that the cable leads might become active during installation.
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.
Verify that the input mode switch is correctly set to
3.
Input Mode Switch on a Three-Input 240-A DC Power Supply for the TX Matrix Router"
on page 278.
Replace the cable restraint, if needed. See "Replacing a Cable Restraint on a TX Matrix
4.
Three-Input 240-A DC Power Supply" on page 283.
Switch the circuit breakers on the power supply faceplate to the
5.
Remove the clear plastic cover protecting the terminal studs on the faceplate.
6.
Remove the nut and washer from the power terminal studs for
7.
INPUT 2 is not supported for the TX matrix router. If no washers and nuts are already
installed, they should be in the accessory box.
Secure the cable lug on the DC power cable to the terminal studs for
8.
INPUT 1 , first with a washer, then with a nut (see Figure 71 on page 129):
Attach the positive (+) DC source power cable lugs to the
a.
Attach the negative (–) DC source power cable lugs to the
b.
Use a 7/16-in. (11 mm) nut driver or wrench to tighten the nut (see Figure 70 on
page 127). Apply between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each
nut.
CAUTION: Each power supply must be connected to one dedicated DC
power source for each set of return and input terminals.
CAUTION: You must ensure that power connections maintain the proper
polarity. The power source cables might be labeled
their polarity. There is no standard color coding for DC power cables. The
2-INPUT
2-INPUT mode. See "Setting the
OFF position (
and
INPUT O INPUT 1
INPUT O
(return) terminals.
RTN
–48V (input) terminals.
(+) and (–) to indicate
Copyright © 2010, Juniper Networks, Inc.
O ).
.
and