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Instruction Leaflet
I. L. 29-886B
Effective August 2011
Instructions for Digitrip RMS 610 Trip Unit
eaton corporation
www.eaton.com
contents
Description
Page
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1 General Description - Digitrip RMS 610
Trip Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1 .1 Basic Digitrip RMS 610 Trip Unit . . . . . . . . . . . . . . . . . . . . . . .4
1 .1 .1 Operational Status and Protection TRIP Indicators . . . . . .4
1 .1 .2 General Over-Current Protection . . . . . . . . . . . . . . . . . . . .5
1 .1 .3 Discriminator (High Initial Current Release)
(For Types LS and LSG Trip Units Only) . . . . . . . . . . . . . . .8
1 .1 .4 OVERRIDE (Fixed Instantaneous) . . . . . . . . . . . . . . . . . . .9
1 .1 .5 Zone Interlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
1 .2 Four Character Information Display Window . . . . . . . . . . . . . .9
1 .2 .1 Values Displayed During Normal Service . . . . . . . . . . . . .9
1 .2 .2 Messages Displayed After ALARM or TRIP . . . . . . . . . .12
1 .2 .1 .1 ROM Error . . . See I .L . . . . . . . . . . . . . . . . . . . . . . . . . . .13
1 .3 Frame Rating, Sensor Rating (where applicable) and Rating
Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
1 .4 Power / Relay Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
1 .5 Auxiliary Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2 UL Listed Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3 Protection Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3 .1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3 .2 Long Delay Current Setting . . . . . . . . . . . . . . . . . . . . . . . . . .15
3 .3 Long Delay Time Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3 .4 Short Delay Current Setting . . . . . . . . . . . . . . . . . . . . . . . . .16
3 .5 Short Delay Time Setting . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3 .6 Instantaneous Current Setting . . . . . . . . . . . . . . . . . . . . . . .16
3 .7 No Instantaneous Current Setting . . . . . . . . . . . . . . . . . . . . 17
3 .8 Ground Fault Current Setting . . . . . . . . . . . . . . . . . . . . . . . . 17
3 .9 Ground Fault Time Delay Setting . . . . . . . . . . . . . . . . . . . . . 17
4 Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4 .1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4 .2 When To Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4 .3 Testing Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4 .4 Conducting Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4 .4 .1 Not Tripping the Breaker . . . . . . . . . . . . . . . . . . . . . . . . .19
4 .4 .2 Tripping the Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4 .5 Testing the Back-up Battery (Inside the Rating Plug) . . . . . .20
4 .5 .1 Back-up Battery Check . . . . . . . . . . . . . . . . . . . . . . . . . .20
4 .5 .2 Replacing the Back-up Battery . . . . . . . . . . . . . . . . . . . .20
5 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
5 .1 Digitrip RMS Trip Assemblies . . . . . . . . . . . . . . . . . . . . . . . .20
5 .2 Type DS Low-Voltage AC Power Circuit Breakers . . . . . . . . .20
5 .3 Type DS II Low-Voltage AC Power Circuit Breakers . . . . . . .20
5 .4 Type SPB Systems Pow-R Breakers . . . . . . . . . . . . . . . . . . .20
5 .5 Series C
®
R-Frame Molded Case Circuit Breakers . . . . . . . .20
APPENDIX A: Zone lnterlocking . . . . . . . . . . . . . . . . . . . . . . . . . . .21
APPENDIX B: Interpreting Display Codes after Circuit Breaker
Trips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
List of Figures
Description
Page
Figure 1 . Digitrip RMS 610 Trip Unit Type LSIG with Rating Plug . . . . 3
Figure 2 . RMS Digitrip 610 Trip Unit - Block Diagram . . . . . . . . . . . . . 4
Figure 3 . Digitrip RMS 610 Type Ll . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4 . Digitrip RMS 610 Type LS . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5 . Digitrip RMS 610 Type LSI . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 6 . Digitrip RMS 610 Type LIG . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 7 . Digitrip RMS 610 Type LSG . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8 . Digitrip RMS 610 Type LSIG . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9 . Rating Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Figure 10 . Power/Relay Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 11 . Auxiliary Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 12 . Long Delay Current Settings . . . . . . . . . . . . . . . . . . . . . . .15
Figure 13 . Long Delay Time Settings . . . . . . . . . . . . . . . . . . . . . . . . .16
Figure 14 . Short Delay Current Settings . . . . . . . . . . . . . . . . . . . . . . .16
Figure 15 . Short Delay Time Settings . . . . . . . . . . . . . . . . . . . . . . . . .16
Figure 16 . Instantaneous Current Settings . . . . . . . . . . . . . . . . . . . .16
Figure 17 . Ground Fault Current Settings . . . . . . . . . . . . . . . . . . . . . .17
Figure 18 . Ground Fault Time Delay Settings . . . . . . . . . . . . . . . . . . .17
Figure 19 . Integral Test Panel (Lower Right Corner of Trip Unit) . . . . .18
Figure A .1 Typical Zone Interlocking (Ground Fault Protection) . . . . 21
Figure A .2 Typical Zone Interlocking Connections with Two Main
Breakers (M1, M2) and a Tie Breaker (T) (Short Delay
Protection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of Tables
Description
Page
Table 1 . Digitrip RMS 610 Protection Functions . . . . . . . . . . . . . . . . . 6
Table 2 . Digitrip RMS 610 Information Functions . . . . . . . . . . . . . . 10
Table 3 . Digitrip RMS 610 Trip Unit Message Codes and
their Meanings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 4 . Ground Fault Current Settings . . . . . . . . . . . . . . . . . . . . . . 17