⎯
410
⎯
6
F
2
S
0
8
4
6
The line angle setting is set to 85
°
. Alternatively set to a smaller angle (e.g. 80
°
) in consideration
of higher levels of fault resistance.
<Z1S, Z1XS, Z2S, Z3S, Z4S, Z1G, Z1XG, Z2G element>
Z1S, Z1XS, Z2S, Z3S, Z4S, Z1G, Z1XG, Z2G element settings are calculated as shown in the
following table.
<Z3G, Z4G element>
Zero sequence current compensation is not applied to Z3 or Z4. Z3G and Z4G settings should be
larger than the calculated values because of the underreaching effect without zero sequence
current compensation.
a. Setting condition of Z3G element:
The Z3G element must operate on all faults for which the Z2G element operates.
(lower setting limit: Z3G > Z2G)
The Z3G element must not operate on load current. (upper setting limit), so:
X3G setting = [Zline
×
130%](Z2G setting)
×
2.6(operating margin for no zero phase
sequence current compensation)
×
1.5(operating margin)
= 500% of Zline
b. Setting condition of Z4G element
The operation zone of the Z4G element includes the operating zone of the Z3G element
remote terminal relay.
Element Actual
impedance
(ohms)
k factor
Relay impedance
(ohms)
Z1S 3.692
0.32
Z1XS 5.999
0.53
Z2S 5.999
0.53
Z3S 13.84
1.22
Z4S 16.61
1.46
Z1G 3.461
0.088
0.30
Z1XG 5.999
0.53
Z2G 5.999
0.53
Z3G 23.07
2.03
Z4G 27.68
2.44
PSBSZ -----
2.00
PSBGZ -----
2.00
3.5 Blinder
setting
Zero sequence compensation is not applied to the blinder elements.
Recommended setting: 5.00 ohms
These elements should not operate under maximum load current:
Rset < load impedance/margin
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: ......