IL 33-DAH-1

 

 

Digitrip Retrofit System for

 

 

Westinghouse DA-75 Breakers

 

 

Table of Contents

 

SAFETY PRECAUTIONS ................................................................................................................

1

Kit Components List .........................................................................................................................

2

Step 1:

General Breaker Preparation ............................................................................................

3

Step 2:

Removing the Original Electromechanical Trip Units ........................................................

3

Step 3:

Preparing the Sensors ......................................................................................................

4

Step 4: Installing the Sensors........................................................................................................

4

Step 5:

Installing the Trip Unit Mounting Platform..........................................................................

5

Step 6:

Preparing the Trip Unit Assembly ......................................................................................

6

Step 7:

Installing the Trip Unit ........................................................................................................

6

Step 8:

Installing the Trip Finger ....................................................................................................

7

Step 9:

Installing the Reset Arm Assembly ...................................................................................

7

Step 10: Installing the DTA Assembly .............................................................................................

8

Step 11: Installing the 2-Point Terminal Block .................................................................................

9

Step 12: Installing the Breaker Mounted CPT .................................................................................

9

Step 13: Final Connection of the Harnesses and Wiring...............................................................

11

Step 14: Installing the Auxiliary Switch..........................................................................................

14

Step 15: Testing the Breaker .........................................................................................................

15

Step 16: Mounting the Cell Harness .............................................................................................

15

Step 17: Installing the Retrofitted Breaker in the Cell ....................................................................

16

Kit Parts List ...................................................................................................................................

17

Torque Values for General Mounting ..............................................................................................

21

Torque Values for Copper BUS Connectors ...................................................................................

21

INDEX

............................................................................................................................................

25