
35
6
F
2
S
0
7
8
9
Setting
The following shows the setting elements for the overexcitation protection and their setting
ranges.
Element
Range
Step
Default
Remarks
V
100.0
120.0V
0.1V
100.0V
Transformer rated voltage / VT ratio
A
1.03
1.30
(
)
0.01
1.03
Alarm
L
1.05
1.30
0.01
1.05
Low level
H
1.10
1.40
0.01
1.40
High level
LT
1
600s
1s
600s
Operation time at low level (Inverse
time curve)
HT
1
600s
1s
1s
Operation time at high level (Inverse
time curve)
RT
60
3600s
1s
250s
Reset time after removing
overexcitation condition
TVFH
1
600s
1s
10s
Operating time at high level setting
(Definite time delay)
TVFA
1
600s
1s
10s
Alarm time (Definite time delay)
Scheme switch
[V/F1] to [V/F5]
[V/FA]
Off/On
Off/On
(**)
On
Enable or disable tripping
Enable or disable alarm
(
): Multiplier of (rated voltage) / (rated frequency)
(**): Refer to Appendix H for default setting.
Figure 2.8.2 Setting Points
sec
V/Hz
0
L
H
HT
TVFH
LT
(log T)
H: High level (definite time tripping)
L: Low level (pick up level)
HT: Operating time at high level
LT: Operating time at low level
A
A: Alarm level
TVFH: Operating time at high level setting
TVFA
TVFA: Alarm time
Withstand curve at transformer overexcitation
Содержание GRT100 Series
Страница 55: ... 54 6 F 2 S 0 7 8 9 TRANSFORMER PROTECTION GRT100 Operation keys 101B 21 11 Figure 3 1 9 Front Panel ...
Страница 142: ... 141 6 F 2 S 0 7 8 9 Appendix A Block Diagram ...
Страница 144: ... 143 6 F 2 S 0 7 8 9 Appendix B Signal List ...
Страница 159: ... 158 6 F 2 S 0 7 8 9 ...
Страница 160: ... 159 6 F 2 S 0 7 8 9 Appendix C Variable Timer List ...
Страница 162: ... 161 6 F 2 S 0 7 8 9 Appendix D Binary Output Default Setting List ...
Страница 165: ... 164 6 F 2 S 0 7 8 9 ...
Страница 166: ... 165 6 F 2 S 0 7 8 9 Appendix E Details of Relay Menu and LCD and Button Operation ...
Страница 174: ... 173 6 F 2 S 0 7 8 9 Appendix F Case Outline Flush Mount Type Rack Mount Type ...
Страница 179: ... 178 6 F 2 S 0 7 8 9 ...
Страница 180: ... 179 6 F 2 S 0 7 8 9 Appendix G External Connections ...
Страница 185: ... 184 6 F 2 S 0 7 8 9 ...
Страница 200: ... 199 6 F 2 S 0 7 8 9 ...
Страница 201: ... 200 6 F 2 S 0 7 8 9 Appendix J Return Repair Form ...
Страница 205: ... 204 6 F 2 S 0 7 8 9 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Страница 206: ... 205 6 F 2 S 0 7 8 9 ...
Страница 207: ... 206 6 F 2 S 0 7 8 9 Appendix K Technical Data ...
Страница 220: ... 219 6 F 2 S 0 7 8 9 ...
Страница 221: ... 220 6 F 2 S 0 7 8 9 Appendix M Symbols Used in Scheme Logic ...
Страница 224: ... 223 6 F 2 S 0 7 8 9 ...
Страница 225: ... 224 6 F 2 S 0 7 8 9 Appendix N Implementation of Thermal Model to IEC60255 8 ...
Страница 228: ... 227 6 F 2 S 0 7 8 9 ...
Страница 229: ... 228 6 F 2 S 0 7 8 9 Appendix O IEC60870 5 103 Interoperability and Troubleshooting ...
Страница 241: ... 240 6 F 2 S 0 7 8 9 Appendix P Modbus Interoperability ...
Страница 255: ... 254 6 F 2 S 0 7 8 9 ...
Страница 256: ... 255 6 F 2 S 0 7 8 9 Appendix Q Inverse Time Characteristics ...
Страница 259: ... 258 6 F 2 S 0 7 8 9 ...
Страница 260: ... 259 6 F 2 S 0 7 8 9 Appendix R Failed Module Tracing and Replacement ...
Страница 266: ... 265 6 F 2 S 0 7 8 9 Appendix S Ordering ...
Страница 269: ... 268 6 F 2 S 0 7 8 9 3 1 Oct 2 2017 Republished under spin off company ...
Страница 270: ......