5-34
G650 Generator Protection & Control System
GEK-113285A
5.4 PROTECTION ELEMENTS
5 SETTINGS
5
5.4.2.3 IAC CURVES
This family of curves follows the time response of
the General Electric IAC electromechanical relays. The following
formulas define these curves:
Where:
t = Operation time in seconds
Dial = multiplier setting
I = Input current
Itap = Current pickup value
A, B, C, D, E = predefined constants
T
RESET
= reset time in seconds
t
r
= characteristic constant.
Table 5–33: CONSTANTS FOR IAC CURVES
IAC CURVE SHAPE
NAME
A
B
C
D
E
TR
IAC Extremely Inverse
IAC Ext Inv
0.0040
0.6379
0.6200
1.7872
0.2461
6.008
IAC Very Inverse
IAC Very Inv
0.0900
0.7955
0.1000
-1.2885
7.9586
4.678
IAC Inverse
IAC Mod Inv
0.2078
0.8630
0.8000
-0.4180
0.1947
0.990
Содержание Multilin G650
Страница 9: ...8 G650 Generator Protection Control System GEK 113285A TABLE OF CONTENTS ...
Страница 29: ...1 20 G650 Generator Protection Control System GEK 113285A 1 4 650 HARDWARE 1 GETTING STARTED 1 ...
Страница 293: ...5 150 G650 Generator Protection Control System GEK 113285A 5 9 LOGIC CONFIGURATION PLC EDITOR 5 SETTINGS 5 ...
Страница 391: ...11 6 G650 Generator Protection Control System GEK 113285A 11 4 RELAY CONFIGURATION 11 FREQUENTLY ASKED QUESTIONS 11 ...
Страница 426: ...GEK 113285A G650 Generator Protection Control System A 31 APPENDIX A A 1 LOGIC OPERANDS A ...
Страница 427: ...A 32 G650 Generator Protection Control System GEK 113285A A 1 LOGIC OPERANDS APPENDIXA A ...
Страница 587: ...C 22 G650 Generator Protection Control System GEK 113285A C 8 ANALOG INPUTS APPENDIXC C ...
Страница 595: ...D 8 G650 Generator Protection Control System GEK 113285A D 5 IEC 60870 5 104 POINT LIST APPENDIXD D ...
Страница 606: ...GEK 113285A G650 Generator Protection Control System E 11 APPENDIX E E 1 FACTORY DEFAULT LOGIC E ...
Страница 607: ...E 12 G650 Generator Protection Control System GEK 113285A E 1 FACTORY DEFAULT LOGIC APPENDIXE E ...
Страница 639: ...G 2 G650 Generator Protection Control System GEK 113285A G 1 GE MULTILIN WARRANTY APPENDIXG G ...