GE Multilin
L90 Line Current Differential System
3-27
3 HARDWARE
3.3 PILOT CHANNEL COMMUNICATIONS
3
The current differential function must be “Enabled” for the communications module to properly operate. Refer to
SETTINGS
GROUPED ELEMENTS
LINE DIFFERENTIAL
CURRENT DIFFERENTIAL
menu.
The fiber optic modules (7A to 7W) are designed for back-to-back connections of UR-series relays only. For con-
nections to higher-order systems, use the 72 to 77 modules or the 2A and 2B modules.
Observing any fiber transmitter output can injure the eye.
3.3.2 FIBER: LED AND ELED TRANSMITTERS
The following figure shows the configuration for the 7A, 7B, 7C, 7H, 7I, and 7J fiber-only modules.
Figure 3–27: LED AND ELED FIBER MODULES
3.3.3 FIBER-LASER TRANSMITTERS
The following figure shows the configuration for the 72, 73, 7D, and 7K fiber-laser module.
Figure 3–28: LASER FIBER MODULES
When using a laser Interface, attenuators can be necessary to ensure that you do not exceed the
maximum optical input power to the receiver.
NOTE
NOTE
Summary of Contents for UR Series L90
Page 652: ...A 16 L90 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 772: ...B 120 L90 Line Current Differential System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 802: ...C 30 L90 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 812: ...D 10 L90 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 824: ...E 12 L90 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 834: ...F 10 L90 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 846: ...xii L90 Line Current Differential System GE Multilin INDEX ...