⎯
89
⎯
6
F
2
S
0
8
3
5
2.12 Communication System
2.12.1 Signaling Channel
The GRL100 transmits all the local data to the remote terminal by coded serial messages. Two
signaling channels are required for two-terminal line protection, six for three-terminal line
protection and four for dual communication for two-terminal line as shown in Figure 2.12.1.1.
(a) Two-terminal Line
(b) Three-terminal Line
(c) Dual Communication for Two-terminal Line
Figure 2.12.1.1 Signaling Channel
The variation of the channel delay time due to switching the route of the channel is automatically
corrected in the relay and does not influence the synchronized sampling provided the sending
and receiving channels take the same route. If the routes are separate, the transmission delay
difference time must be set (see Section 2.2.7).
When the route is switched in A- or B-mode application, the synchronized sampling recovers
within 4s in case of a two- terminal line and 6s in case of a three-terminal line after the switching.
The differential element is blocked until the sampling synchronization is established.
In GPS-mode application (GPS-based synchronization), the sampling synchronization is not
influenced by the route switch. The differential element is only blocked for the duration of the
path switching.
GRL100
Terminal B
Terminal A
GRL100
Terminal B
Terminal A
GRL100
GRL100
GRL100
GRL100
Terminal B
Terminal A
Terminal C
GRL100
Summary of Contents for GRL100-101A
Page 223: ... 222 6 F 2 S 0 8 3 5 ...
Page 228: ... 227 6 F 2 S 0 8 3 5 Appendix B Signal List ...
Page 256: ... 255 6 F 2 S 0 8 3 5 Appendix C Variable Timer List ...
Page 258: ... 257 6 F 2 S 0 8 3 5 Appendix D Binary Output Default Setting List ...
Page 269: ... 268 6 F 2 S 0 8 3 5 ...
Page 270: ... 269 6 F 2 S 0 8 3 5 Appendix E Details of Relay Menu ...
Page 279: ... 278 6 F 2 S 0 8 3 5 ...
Page 288: ... 287 6 F 2 S 0 8 3 5 Appendix G Typical External Connection ...
Page 326: ... 325 6 F 2 S 0 8 3 5 Appendix J Return Repair Form ...
Page 330: ... 329 6 F 2 S 0 8 3 5 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Page 331: ... 330 6 F 2 S 0 8 3 5 ...
Page 332: ... 331 6 F 2 S 0 8 3 5 Appendix K Technical Data ...
Page 343: ... 342 6 F 2 S 0 8 3 5 ...
Page 344: ... 343 6 F 2 S 0 8 3 5 Appendix L Symbols Used in Scheme Logic ...
Page 347: ... 346 6 F 2 S 0 8 3 5 ...
Page 348: ... 347 6 F 2 S 0 8 3 5 Appendix M Multi phase Autoreclose ...
Page 351: ... 350 6 F 2 S 0 8 3 5 ...
Page 352: ... 351 6 F 2 S 0 8 3 5 Appendix N Data Transmission Format ...
Page 358: ... 357 6 F 2 S 0 8 3 5 Appendix O Example of DIF and DIFG Setting ...
Page 364: ... 363 6 F 2 S 0 8 3 5 Appendix Q IEC60870 5 103 Interoperability ...
Page 377: ... 376 6 F 2 S 0 8 3 5 ...
Page 378: ... 377 6 F 2 S 0 8 3 5 Appendix R Failed Module Tracing and Replacement ...
Page 384: ... 383 6 F 2 S 0 8 3 5 Appendix S PLC Setting Sample ...
Page 386: ... 385 6 F 2 S 0 8 3 5 Appendix T Ordering ...
Page 392: ......