Effective 4/00
IL 33-FX6-1
Page 26
STEP 14: TESTING THE BREAKER
A. Measure the force necessary to trip the
Breaker at the point where the Trip Adjusting
Screw Finger impacts the Breaker trip Plate.
The force necessary to trip the Breaker MUST
NOT EXCEED THREE (3) lbs.
B. The Retrofit must be tested using primary
injection. Refer to Section 8 of the Instructions
for the Application of Digitrip RMS Retrofit Kits
on Power Circuit Breakers (Publication
AD 33-855-2), supplied with the Retrofit Kit, for
detailed testing procedures and specifications.
For test information specific to the Trip Unit,
refer to the IL publication supplied with the
Retrofit Kit (see the Pick List for the IL number).
C. While Section 8 of the Instructions for the
Application of Digitrip RMS Retrofit Kits on
Power Circuit Breakers provides the informa-
tion necessary for testing the Breaker, please
keep the following notes in mind when review-
ing other sections of the publication.
WHEN ALL TESTING IS COMPLETE, THE TRIP
UNIT MUST BE RESET. FAILURE TO DO SO
MAY CAUSE THE BATTERY IN THE RATING
PLUG TO RUN DOWN.
NOTES:
1. For All Kits Other Than 510 Basic. If testing the
Breaker with Short Delay or Ground Fault
functions, be sure to either plug in the Cell
Harness Assembly or use the Zone Interlock
Shorting Plug. Failure to do so may result in
shorter than expected trip times.
2. For 810 and 910 Kits Only. Without any power
applied to the system (neither the 120 volt
power supply nor the Aux. Power
Module connected), plug the External
Harness into the Cell Harness and check the
impedance between COM 1 and COM 2. The
impedance should be between one (1) and
three (3) ohms. If the impedance is not within
this range, trace the wiring and examine each
connection to assure its integrity.
Fig. 59 Original Front Components Reinstalled
on the Breaker
CAUTION
C. Using the original mounting hardware, reinstall
the Breaker Front Box Cover.
D. Using the original mounting hardware, reinstall
the Charging Handle.
