IL 33-FX6-1
Page 2
Effective 4/00
Description
Introduction .......................................................... 4
Step 1: General Breaker Preparation .............. 5
Step 2: Removing the Original Trip System
and Preparing the Breaker for
Retrofitting ............................................ 6
Step 3: Installing the Copper Connectors ...... 7
Step 4: Installing the Trip Rod Guide ............... 8
Step 5: Drilling the Breaker for Mounting
the Retrofit Components ..................... 8
Step 6: Installing and Adjusting the DTA
Assembly ............................................... 9
Step 7: Installing the Breaker Mounted
CPT ...................................................... 11
Step 8: Preparing the Trip Unit Assembly ..... 13
Step 9: Installing the Trip Unit Assembly ...... 15
Step 10: Connecting the Line Side HV
Wires .................................................. 19
Step 11: Installing the Sensors ...................... 21
Step 12: Connecting the External
Harness and Final Wiring ................ 23
Step 13: Reinstalling the Original Breaker
Front Components ........................... 25
Step 14: Testing the Breaker .......................... 26
Step 15: Mounting the Cell Harness.............. 27
Step 16: Installing the Retrofitted Breaker
in the Cell .......................................... 28
CONTENTS
Figures
1. Note the Original Spacer Location................ 6
2. Electromechanical Components Removed
from the Breaker ........................................... 6
3. Overview: Copper Connectors Installed
in the Breaker ................................................ 7
4. Spacer Location ............................................ 7
5. Copper Connector Installation ...................... 7
6. Overview: Trip Rod Guide Installed in
the Breaker ....................................................8
7. Installing the Trip Rod Guide ......................... 8
8. Drilling Plan “A” ............................................. 8
9. Drilling Plan “B” ............................................. 9
10. Drilling Plan “C”............................................. 9
11. Overview: DTA Installed in the Breaker........ 9
12. DTA Mounted to the Breaker Frame ............. 9
13. Correct Orientation of the DTA Reset
Arm ..............................................................10
14. Setting the Trip Screw to Breaker Trip
Bar Gap ....................................................... 10
15. Adjusting the Reset Spring Cage Height .... 10
16. Overview: CPT Installed in the Breaker .....11
17. CPT Mounted to the CPT Mounting
Bracket ........................................................ 11
18. CPT Assembly Mounted in the Breaker...... 12
19. Overview: Trip Unit Assembly Prepared
for Installation.............................................. 12
20. Aux. CT Mounting Brackets Attached to
the Trip Unit Mounting Platform .................. 12
Digitrip Retrofit System for
Federal Pioneer FP25 Molded
Case Breakers
