ABB RELION 620 Series Technical Manual page 911

1MAC504801-IB E
620 series ANSI
Technical Manual
GUID-E54674FD-2E7F-4742-90AB-505772A0CFF4 V1 EN
Figure 466: Jumper connections on communication module COM0034
Table 637: X9 Optical ST jumper connectors
Group
X15
X24
Protection relay's physical connections
3
2
X15
1
Jumper connection
1-2
2-3
1-2
2-3
Section 14
3
2
X24
1
Description
Star topology
Loop topology
Idle state = Light on
Idle state = Light off
905