3
Instruction Leaflet
I. L. 29-889B
Effective June 2011
Instructions for Digitrip RMS 910 Trip Unit
eaton corporation
www.eaton.com
List of Figures
Description
Page
Figure 1 . Digitrip RMS 910 Trip Unit Type LSIG with Rating Plug . . . . 5
Figure 2 . RMS Digitrip 910 Trip Unit - Block Diagram . . . . . . . . . . . . . 6
Figure 3 . Digitrip RMS 910 Type Ll . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 4 . Digitrip RMS 910 Type LS . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5 . Digitrip RMS 910 Type LSI . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6 . Digitrip RMS 910 Type LIG . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 7 . Digitrip RMS 910 Type LSG . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8 . Digitrip RMS 910 Type LSIG . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 9 . Rating Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 10 . Power/Relay Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 11 . Potential Transfer Module . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 12 . Auxiliary Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Figure 13 . Long Delay Current Settings . . . . . . . . . . . . . . . . . . . . . . .16
Figure 14 . Long Delay Time Settings . . . . . . . . . . . . . . . . . . . . . . . . .16
Figure 15 . Short Delay Current Settings . . . . . . . . . . . . . . . . . . . . . . .16
Figure 16 . Short Delay Time Settings . . . . . . . . . . . . . . . . . . . . . . . . .17
Figure 17 . Instantaneous Current Settings . . . . . . . . . . . . . . . . . . . .17
Figure 18 . Ground Fault Current Settings . . . . . . . . . . . . . . . . . . . . . .17
Figure 19 . Ground Fault Time Delay Settings . . . . . . . . . . . . . . . . . . .18
Figure 20 . Integral Test Panel (Lower Right Corner of Trip Unit) . . . . .18
Figure 21 . INCOM with Remote Master Computer . . . . . . . . . . . . . 22
Figure 22 . INCOM Network with AEM / BIM . . . . . . . . . . . . . . . . . 23
Figure 23 . INCOM Network with Remote Master Computer and . .
AEM / BIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure A .1 Typical Zone Interlocking (Ground Fault Protection) . . . . 29
Figure A .2 Typical Zone Interlocking Connections with Two Main
Breakers (M1, M2) and a Tie Breaker (T) (Short Delay
Protection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
List of Tables
Description
Page
Table 1 . Digitrip RMS 910 Protection Functions . . . . . . . . . . . . . . . . . 7
Table 2 . Digitrip RMS 910 Information Functions . . . . . . . . . . . . . . 11
Table 3 . Digitrip RMS 910 Trip Unit Message Codes and
their Meanings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 4 . Ground Fault Current Settings . . . . . . . . . . . . . . . . . . . . . . 17
Table 5 . Digitrip RMS 910 Protection Functions . . . . . . . . . . . . . . . 25
