⎯
49
⎯
6 F 2 S 0 8 4 6
•
The forward overreaching element operates.
•
The undervoltage element UVL (UVLS or UVLG) operates and the forward
overreaching and the reverse looking elements do not operate.
The latter is implemented when the weak infeed trip function is selected.
To select the faulted phase reliably, phase selection is performed using the phase selection element
UVC. Phase selection logic is described in Section 2.4.3.7.
≥
1
&
≥
1
≥
1
&
&
&
CB-OR
Z4
Z2
Z3
UVL
" ON "
NON VTF
PSB
ECH
WIT
0. 00-10.00s
S-TRIP
M-TRIP
20ms
Phase
Selection
t
0
0
t
&
CS
CRL
[ZONESEL]
"Z3"
"Z2"
[PSB-CR]
1
R1-CR
TREBK
≥
1
&
TECCB
0.00 - 200.00s
t 0
TSBCT
0.00 – 1.00s
0 t
&
≥
1
0-50ms
0 t
TCHD
&
PSCM_TCHDEN
1842
1
1
&
Figure 2.4.3.3 UOP Scheme Logic
Setting
The following shows the setting elements necessary for the UOP and their setting ranges.
For the settings of Z2, Z3, and UVC, refer to Section 2.4.1.
Element Range
Step
Default
Remarks
UVL
Weak infeed trip element
UVLS
50 - 100 V
1V
77V
Undervoltage detection (phase fault)
UVLG
10 - 60 V
1V
45V
Undervoltage detection (earth fault)
Z4S
0.01 - 50.00
Ω
0.01
Ω
8.00
Ω
Z4 reach
(0.1 – 250.0
Ω
0.1
Ω
40.0
Ω
) (*)
BRRS
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω
Reverse right blinder reach
(0.5 - 100.0
Ω
0.1
Ω
25.5
Ω
)
Z4G
0.01 - 100.00
Ω
0.01
Ω
8.00
Ω
Z4 reach
(0.1 – 500.0
Ω
0.1
Ω
40.0
Ω
)
BRRG
0.10 - 20.00
Ω
0.01
Ω
5.10
Ω
Reverse right blinder reach
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: ......