GEK-113285A
G650 Generator Protection & Control System
5-61
5 SETTINGS
5.4 PROTECTION ELEMENTS
5
5.4.8.3 GENERATOR UNBALANCE (46)
The generator unbalance element protects the machine from rotor damage due to excessive negative sequence current.
Negative sequence current is used as operation element. The element has an inverse time stage (stage 1), typically used
for tripping, and a definite time stage (stage 2) typically used for alarm purposes.
Stage 1 trip time is based on an inverse time curve, defined by the equation:
where I
nom
is the generator rated current and K is the negative-sequence (I2
2
T) capability constant normally provided by
the generator manufacturer.
2
*
2
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
=
Ipkp
Inom
I
K
T
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 ...