⎯
47
⎯
6 F 2 S 0 8 4 6
Element Range
Step Default Remarks
ECHO OFF/ON
ON
Echo
function
WKIT
OFF/ON
ON
Weak infeed trip function
(*) Ohmic values shown in the parentheses are in the case of 1 A rating. Other ohmic values are in the
case of 5 A rating.
The following elements have fixed setting values or their settings are interlinked with other
elements listed above. So no setting operation is required.
Element Setting
Remarks
Z4BS
Fixed to 1.5
Ω
Z4 reverse offset reach
(Fixed to 7.5
Ω
) (*1)
Z4S
θ
(*2)
Interlinked with Z3S
θ
Characteristic angle of Z4 mho element
Z4BS
θ
(*3)
Interlinked with ZBS
θ
Angle of Z4 directional element
BRRS
θ
Fixed to 75°
Angle of reverse right blinder BRRS
BRLS
Interlinked with BRRS Reverse left blinder
BRLS
θ
Interlinked with BFLS
θ
Angle of reverse left blinder BRLS
Z4G
θ
(*2)
Interlinked with Z3G
θ
Characteristic angle of Z4 mho element
Z4BG
θ
(*3)
Interlinked with ZBG
θ
Angle of Z4 directional element
BRRG
θ
Fixed to 75°
Angle of reverse right blinder BRRG
BRLG
Interlinked with BRRG Reverse left blinder
BRLG
θ
Interlinked with BFLG
θ
Angle of reverse left blinder BRLG
(*1) Ohmic values shown in the parentheses are in the case of 1 A rating. Other ohmic values are in
the case of 5 A rating.
(*2) Valid only when mho-based characteristic is selected by ZS-C and ZG-C.
(*3) Valid only when quadrilateral characteristic is selected by ZS-C and ZG-C.
The reverse looking Z4 (G,S), BRR (G,S) and BRL (G,S) must always operate for reverse faults
for which the forward overreaching element of the remote end operates. The following setting
coordination is required.
When zone 2 is selected as the forward looking element:
Z4 setting = 1.2
×
(Zone 2 setting at remote end)
When zone 3 is selected:
Z4 setting = 1.2
×
(Zone 3 setting at remote end)
In both cases:
BRR setting = 1.2
×
(BFR setting at remote end)
2.4.3.3 Unblocking Overreach Protection
Application
If a power line carrier is used as the telecommunication media, there is a possibility that the
dependability of the PUP and POP could be reduced. This is because the trip permission signal
must be transmitted through the fault point and the attenuation of the signal may cause the PUP
and POP to fail to operate. To solve this problem, unblocking overreach protection (UOP) is
applied.
The signal transmitted under the UOP is a trip block signal and this is transmitted continuously
during non-fault conditions. When the forward overreaching element operates, transmission is
stopped. At the remote end, the non-receipt of a trip block signal is recognized as an actual trip
permission signal and tripping is executed on condition that the local forward overreaching
element operates.
Содержание GRZ100 B Series
Страница 264: ... 263 6 F 2 S 0 8 4 6 Appendix A Block Diagram ...
Страница 271: ... 270 6 F 2 S 0 8 4 6 ...
Страница 272: ... 271 6 F 2 S 0 8 4 6 Appendix B Signal List ...
Страница 307: ... 306 6 F 2 S 0 8 4 6 ...
Страница 308: ... 307 6 F 2 S 0 8 4 6 Appendix C Variable Timer List ...
Страница 310: ... 309 6 F 2 S 0 8 4 6 Appendix D Binary Input Output Default Setting List ...
Страница 321: ... 320 6 F 2 S 0 8 4 6 ...
Страница 322: ... 321 6 F 2 S 0 8 4 6 Appendix E Details of Relay Menu and LCD Button Operation ...
Страница 331: ... 330 6 F 2 S 0 8 4 6 ...
Страница 340: ... 339 6 F 2 S 0 8 4 6 Appendix G Typical External Connections ...
Страница 377: ... 376 6 F 2 S 0 8 4 6 ...
Страница 384: ... 383 6 F 2 S 0 8 4 6 Appendix J Return Repair Form ...
Страница 388: ... 387 6 F 2 S 0 8 4 6 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Страница 389: ... 388 6 F 2 S 0 8 4 6 ...
Страница 390: ... 389 6 F 2 S 0 8 4 6 Appendix K Technical Data ...
Страница 401: ... 400 6 F 2 S 0 8 4 6 ...
Страница 402: ... 401 6 F 2 S 0 8 4 6 Appendix L Symbols Used in Scheme Logic ...
Страница 405: ... 404 6 F 2 S 0 8 4 6 ...
Страница 406: ... 405 6 F 2 S 0 8 4 6 Appendix M Example of Setting Calculation ...
Страница 417: ... 416 6 F 2 S 0 8 4 6 ...
Страница 418: ... 417 6 F 2 S 0 8 4 6 Appendix N IEC60870 5 103 Interoperability and Troubleshooting ...
Страница 430: ... 429 6 F 2 S 0 8 4 6 Appendix O Programmable Reset Characteristics and Implementation of Thermal Model to IEC60255 8 ...
Страница 434: ... 433 6 F 2 S 0 8 4 6 Appendix P Inverse Time Characteristics ...
Страница 437: ... 436 6 F 2 S 0 8 4 6 ...
Страница 438: ... 437 6 F 2 S 0 8 4 6 Appendix Q Failed Module Tracing and Replacement ...
Страница 444: ... 443 6 F 2 S 0 8 4 6 Appendix R Ordering ...
Страница 447: ......