ABB Relion 620 Series - Page 1191

3
1 X24
2
1
3
2
X1
5
Figure 636: Jumper connections on communication module COM0034
Table 1083: X9 Optical ST jumper connectors
Group Jumper connection Description
X15
1-2
2-3
Star topology
Loop topology
X24
1-2
2-3
Idle state = Light on
Idle state = Light off
1MRS757644 H IED physical connections
620 series
Technical Manual
1191