
⎯
90
⎯
6 F 2 S 0 8 4 6
≥
1
&
&
0.2s
VTF2_ALARM
VTF2
1
100ms
0 t
CB-AND
UVFS
UVFG
OCD
OVG
EFL
1
1
10s
t 0
≥
1
[
VTF1EN
]
"ON", “OPT-ON”
+
[
VTF2EN
]
"ON", “OPT-ON”
+
≥
1
VTF1_ALARM
VTF1
100ms
0 t
10s
t 0
62
568
142:UVFSOR
140:UVFGOR
63:OCD-A
64 OCD-B
65:OCD-C
VTF_BLOCK
1642
1
EXT_VTF
1541
≥
1
VTF_ONLY_ALM
1643
≥
1
&
1
175
173:VTF
NON VTF
VTF_ALARM
172
174
1
Figure 2.4.13.1 VTFS Logic
Setting
The setting elements necessary for the VTFS and their setting ranges are as follows:
Element Range
Step Default Remarks
UVFS
50 - 100 V
1 V
88 V
Phase - to - phase undervoltage
UVFG
10 - 60 V
1 V
51 V
Phase - to - earth undervoltage
EFL
0.5 - 5.0 A
0.1 A
1.0 A
Residual overcurrent
( 0.10 - 1.00 A
0.01 A
0.20 A) (*)
[VTF1EN] Off/On/OPT-On
On
VTF1
supervision
[VTF2EN] Off/On/OPT-On
On
VTF2
supervision
[VTF-Z4]
Off / On
On
Z4 blocked by VTF
(*) Current values shown in the parentheses are in the case of 1 A rating. Other current values are in
the case of 5 A rating.
The following elements have fixed setting values.
Element Setting
Remarks
OCD
Fixed to 0.5 A
Current change detection
(Fixed to 0.1 A)
OVG
Fixed to 20 V
Residual overvoltage
(*) Current value shown in the parentheses is in the case of 1 A rating. Other current value is in the
case of 5 A rating.
When setting the UVFS, UVFG and EFL, the maximum detection sensitivity of each element
should be set with a margin of 15 to 20% taking account of variations in the system voltage, the
asymmetry of the primary system and CT and VT error.
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: ......