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120
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6 F 2 S 0 8 4 6
Single- and three-phase autoreclose:
In this autoreclose mode, single-phase tripping and reclosing are performed if a single-phase fault
occurs, while three-phase tripping and reclosing are performed if a multi-phase fault occurs.
This reclosing mode is simply expressed as "SPAR & TPAR" in the following descriptions.
Shingle-shot autoreclose can be applied to one-breaker reclosing and two-breaker reclosing in the
one-and-a-half breaker busbar system.
Multi-shot autoreclose
In the multi-shot autoreclose, any of two- to four-shot reclosing can be selected. In any case, the
first shot is selected from three types of autoreclose modes as described in the above single-shot
autoreclose. All successive shots (up to three times), which are applied if the first shot fails, are
three-phase tripping and reclosing.
Multi-shot autoreclose cannot be applied to two-breaker reclosing in the one-and-a-half breaker
busbar system..
The autoreclose can also be activated from an external line protection. At this time, all autoreclose
modes described above are effective.
If a fault occurs under the following conditions, three-phase final tripping is performed and
autoreclose is blocked.
•
Reclosing block signal is received from external unit locally or remotely.
•
Throughout the reclaim time
For evolving faults that occurred during the dead time between single-phase tripping and
reclosing, "SPAR & TPAR" functions as follows.
For evolving faults that occurred within the period of time set from the first fault, the reclosing
mode enters the three-phase autoreclose mode. At this time, the total dead time becomes the dead
time for three-phase autoreclose added to the dead time for single-phase autoreclose which has
been used until the evolving fault occurs.
For evolving faults occurred after the set time, three-phase final tripping is performed, and
reclosing is not performed.
If an evolving fault occurs when "SPAR" is selected, three-phase final tripping is performed, and
reclosing is not performed.
Summary of Contents for GRZ100 B Series
Page 264: ... 263 6 F 2 S 0 8 4 6 Appendix A Block Diagram ...
Page 271: ... 270 6 F 2 S 0 8 4 6 ...
Page 272: ... 271 6 F 2 S 0 8 4 6 Appendix B Signal List ...
Page 307: ... 306 6 F 2 S 0 8 4 6 ...
Page 308: ... 307 6 F 2 S 0 8 4 6 Appendix C Variable Timer List ...
Page 310: ... 309 6 F 2 S 0 8 4 6 Appendix D Binary Input Output Default Setting List ...
Page 321: ... 320 6 F 2 S 0 8 4 6 ...
Page 322: ... 321 6 F 2 S 0 8 4 6 Appendix E Details of Relay Menu and LCD Button Operation ...
Page 331: ... 330 6 F 2 S 0 8 4 6 ...
Page 340: ... 339 6 F 2 S 0 8 4 6 Appendix G Typical External Connections ...
Page 377: ... 376 6 F 2 S 0 8 4 6 ...
Page 384: ... 383 6 F 2 S 0 8 4 6 Appendix J Return Repair Form ...
Page 388: ... 387 6 F 2 S 0 8 4 6 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Page 389: ... 388 6 F 2 S 0 8 4 6 ...
Page 390: ... 389 6 F 2 S 0 8 4 6 Appendix K Technical Data ...
Page 401: ... 400 6 F 2 S 0 8 4 6 ...
Page 402: ... 401 6 F 2 S 0 8 4 6 Appendix L Symbols Used in Scheme Logic ...
Page 405: ... 404 6 F 2 S 0 8 4 6 ...
Page 406: ... 405 6 F 2 S 0 8 4 6 Appendix M Example of Setting Calculation ...
Page 417: ... 416 6 F 2 S 0 8 4 6 ...
Page 418: ... 417 6 F 2 S 0 8 4 6 Appendix N IEC60870 5 103 Interoperability and Troubleshooting ...
Page 434: ... 433 6 F 2 S 0 8 4 6 Appendix P Inverse Time Characteristics ...
Page 437: ... 436 6 F 2 S 0 8 4 6 ...
Page 438: ... 437 6 F 2 S 0 8 4 6 Appendix Q Failed Module Tracing and Replacement ...
Page 444: ... 443 6 F 2 S 0 8 4 6 Appendix R Ordering ...
Page 447: ......