Juniper T640 Quick Start Manual page 23

Hide thumbs Also See for T640:

Table of Contents

Figure 10: Connecting Power to a Two-Input 160-A DC Power Supply

Connecting Power to a T640 Router with Two-Input 160-A DC Power Supplies

Remove the nut and washer from the power terminal studs for

Attach each power cable lug to the correct terminal stud on the power supply

faceplate, and secure the cable lug first with washer, then with the nut. Use a 7/16-in.

(11 mm) nut driver or wrench to tighten the nut. Apply between 23 lb-in. (2.6 Nm) and

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

Figure 15 on page

30.

CAUTION:

You must use an appropriate torque-controlled tool to tighten

the nuts. Applying excessive torque damages the terminal studs and the

power supply. The absolute maximum torque that may be applied to this

nut is 45 in-lb (5.0 Nm).

Attach and secure the positive (+) cable lugs to the

Attach and secure the negative (–) cable lugs to the

Verify that the positive and negative power cables are connected to the correct terminal

10.

studs.

Route the DC power cables through the cable restraint or restraints.

11.

Tighten the cable restraint captive screw or screws to hold the power cables in place.

12.

Replace the clear plastic cover on the power supply.

13.

Repeat the procedure for the remaining power supply.

14.

INPUT O

Figure 10 on page

23,

Figure 14 on page

terminals.

RTN (return)

-48V (input)

terminals.

and

INPUT 1

28,

Table of Contents