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The start of the dead time counter can be configured by the PLC. In the default setting, the
single-phase autoreclose is started instantaneously after tripping, and the three-phase autoreclose
is started after the ARC-SET condition is satisfied.
The “ARC-SET” is a scheme signal whose logical level becomes 1 when a lead breaker’s
autoreclose command is output.
In default setting, therefore, the dead time of the follower breaker is as follows:
•
Three-phase autoreclose: equal to the sum of the dead time setting of the two breakers.
(TTPR1 + TTPR2)
•
Single-phase autoreclose: TSPR2
However, the dead time can be set that of the leader breaker by the PLC setting “RF.ST-REQ”.
The shortening of the dead time can be also applied when the leader breaker is final-tripped
because it is no ready.
Autoreclose start requirement
Using PLC function, various autoreclose start requirements can be designed. In Figure 2.6.2.7, a
reclose start requirement for "SPAR", "TPAR" or "SPAR&TPAR" can be respectively assigned to
the following signals by PLC:
"SPAR":
[SPR.F-ST.REQ]
"TPAR":
[TPR.F-ST.REQ]
"SPAR&TPAR": [SPR.F-ST.REQ],
[TPR.F-ST.REQ]
The default setting for the follower CB autoreclose start requirement is as follows:
Reclose start
requirement
Default setting
Remarks
"SPAR"
[SPR.F-ST.REQ] = CONSTANT_1
No condition
"TPAR"
[TPR.F-ST.REQ] = ARC-SET
ARC-SET becomes “1” when the leader
CB is reclosed.
Autoreclose
requirement
The autoreclose requirement can be designed by assigning a reclose requirement to the signals
[SPR.F-ST.REQ] and [TPR.F-ST.REQ] same as above.
The default setting for the follower CB autoreclose requirement is as follows:
Reclose requirement
Default setting
Remarks
"SPAR"
[SPR.F-ST.REQ] = CONSTANT_1
No condition
"TPAR"
[TPR.F-ST.REQ] = SYP-ON
Voltage and synchronism check
Others
If the autoreclose start requirement is designed such as starting the follower CB in no-ready
condition of the leader CB, it is assigned to the signal [R.F-ST.REQ].
By assigning the autoreclose start requirement to the signal [R.F-ST.REQ], both the leader CB and
the follower CB are set the same dead time. The reclose requirement is assigned to the signals
[SPR.F2-ST.REQ] and [TPR.F2-ST.REQ].
The default setting for the follower CB is as follows:
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: ......