⎯
414
⎯
6
F
2
S
0
8
4
6
b. VT failure supervision
The undervoltage element for VT failure supervision (UVFS, UVFG) is set to about 50% of
the rated voltage.
Element Setting
UVFS 52V
UVFG 30V
c. Weak infeed tripping function
The undervoltage element for weak infeed tripping (UVLS, UVLG) is set to 70% of the
rated voltage.
Element Setting
UVLS 77V
UVLG 45V
3.9 Time
setting
a. Time delay setting for zone distance protection
b. Coordination time setting for protection signaling channel
This time setting is required only for the Blocking scheme. The time should be set larger
than the time delay of protection signaling equipment (PSE) including propagation time of
PLC (Power Line Carrier) or other communication link. The time setting should include an
operation margin of 5ms.
Time setting = Time delay of PSE + Margin
= 12ms + 5ms
=
17ms
c. Time setting of earth fault element EF (TEF)
This time setting is for time delay of the EF element. If it is set to 3s, the trip/alarm contact
will close 3s after detecting an unbalance current (residual current) such as a CT open
circuit fault. In addition to CT open circuit faults, this element can detect a broken
conductor condition.
d. Time setting of directional earth fault relay (TDEF)
Set the time delay for the directional earth fault element for back-up.
Element Setting
(s)
TZ1S 0.00
TZ2S 0.30
TZ3S 0.40
TZ1G 0.00
TZ2G 0.30
TZ3G 0.40
TCHD 0.017
TEF 3.00
TDEF 3.00
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: ......