1.0 Supplementary Information ........................................................ 2
2.0 Digitrip RMS and Digitrip OPTIM Trip Units ............................................ 2
3.0 Rating Plugs .................................................................... 3
4.0 Digitrip RMS Model Considerations .................................................. 5
4.1 Digitrip RMS 510 ................................................................ 6
4.2 Digitrip RMS 610 ................................................................ 6
4.3 Digitrip RMS 810 ................................................................ 9
4.4 Digitrip RMS 910 ............................................................... 10
4.5 Digitrip OPTIM Model Considerations ............................................... 10
4.6 Digitrip OPTIM 750 ............................................................. 10
4.7 Digitrip OPTIM 1050. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.0 Principle of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 General ....................................................................... 12
5.2 Digitrip RMS Trip Assembly ....................................................... 12
5.3 Trip Actuator ................................................................... 12
5.4 Ground Fault Protection .......................................................... 13
5.5 Current Sensors ................................................................ 14
5.6 Potential Transformer Module ..................................................... 15
6.0 Testing ....................................................................... 15
6.1 Functional Field Testing .......................................................... 15
6.1.1 Secondary Injection Testing ....................................................... 15
6.2 Performance Testing for Ground Fault Trip Units ....................................... 18
6.2.1 Code Requirements ............................................................. 18
6.2.2 Standards Requirements ......................................................... 18
6.2.3 General Test Instructions ......................................................... 18
7.0 Record Keeping ................................................................ 18
8.0 Low Voltage Power Circuit Breaker References ........................................ 19
8.1 Digitrip RMS and Digitrip OPTIM
Trip Assembly References ........................................................ 19
8.2 Time-Current Curves ............................................................ 19
8.3 Miscellaneous References ........................................................ 19
Description Page
Effective July 2010
Supersedes July 1997
IL8700C39-03
Instructional Leaflet IL8700C39-04
Eaton Digitrip RMS and Digitrip
OPTIM Trip Units with Types DSII
and DSLII Low Voltage Power Circuit
Breakers
Contents