Juniper T640 Quick Start Manual page 32

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T640 Core Router Quick Start

Figure 16: Connecting DC Power Cables

Cable lug

Locking

washer

Nut

Figure 17: Connecting Negative (–) DC Power Cables to INPUT 0, INPUT 1,

INPUT 3, and INPUT 4

Replace the smallest cable restraint on the far right, and tighten the captive screw to

hold the power cables for

Route the negative (–) DC source power cables for

10.

middle cable restraint. The middle cable restraint is marked as follows from top to

bottom:

INPUT 2

RTN 2

NOTE:

You must route the cables in the locations as marked to be able

to replace the clear plastic cover over the terminal studs.

Attach the negative (–) DC source power cable lugs to the –48 V (input) terminals

on the right. Secure the cable lugs to the terminal studs, first with the washers, then

with the nuts. Using a 7/16-in. (11 mm) nut driver, tighten the nuts. Apply between 23

lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each nut.

Terminal studs

INPUT 0

INPUT 1

INPUT 3

, and

RTN 5

INPUT 5

, and

in place.

INPUT 4

INPUT 2

and

INPUT 5

through the

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