⎯
409
⎯
6
F
2
S
0
8
4
6
OST
Out of step trip
OFF
THMT Thermal
trip
OFF
THMAL Thermal
alarm
OFF
Autoreclose mode
Autoreclosing mode
SPAR&TPAR
ARC-SM
Multi. Shot ARC mode
OFF
ARC-CB
ARC mode for 1.5CB system
--
ARC-DEF
REC. by DG carr. trip
OFF
ARC-BU
ARC initiated by back-up trip
OFF
ARC-EXT
ARC initiated by ext. trip
OFF
VCHK TPAR
condition
LB
VTPHSEL
VT phase selection
A
VT-RATE VT
rating
PH/G
3PH-VT
3ph. VT location
BUS
3.4 Impedance
setting
Element
Standard setting (Recommended)
Setting
Z1S
80% of protected line reactance
80%
Z1XS
120% or more of protected line reactance
130%
Z2S
120% or more of protected line reactance
130%
Z3S
100% of protected line impedance plus 150%
of next line section
300%
Z3S
θ
Line angle setting (Note *1)
Z4S
120% of Z3S
120% of Z3S setting
Z1G
75% - 80% of protected line reactance
75%
Z1XG
120% or more of protected line reactance
130%
Z2G
120% or more of protected line reactance
130%
Z3G
400% - 600% of protected line impedance
500%
Z3G
θ
Line angle setting (Note *1)
Z4G
120% of Z3G
120% of Z3G setting
PSBSZ
2 ohms (5A rating)
2 ohms
PSBGZ
2 ohms (5A rating)
2 ohms
Step 1
Calculate the setting impedance from the given recommended reach point table.
Step 2
Multiply the actual impedance by the factor “k” to calculate the relay impedance:
Relay impedance = k
×
Actual impedance
Factor “k” is calculated as follows:
K = (CT ratio)/(VT ratio) = (600/5A)/((150kV/ 3 )/(110V)/ 3 )) = 0.088
Note *1:
Z3S
θ
and Z3G
θ
line angle settings are applicable if [ZS-C] and [ZG-C] are set to
“Mho”.
Line angle
θ
= tan
-1
(0.2747/0.0197) = 85.9
°
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: ......