GEK-106310AB
F650 Digital Bay Controller
5-37
5 SETTINGS
5.4 PROTECTION ELEMENTS
5
5.4.2.2 IEC CURVES
This family of curves follows the European standard IEC 255-4, and the British standard BF142 for IEC Curves A, B and C,
IEC Long-Time Inverse and IEC Short-Time Inverse. The formulas that define these curves are as follows:
Where:
t = Operation time in seconds
Dial = multiplying factor
I = Input current
Itap = Current pickup value
K, E = constants defined by the standard
T
RESET
= reset time in seconds (assuming 100% of power capacity and that the reset is activated)
t
r
= characteristic constant.
Table 5–32: CONSTANTS FOR IEC CURVES
IEC CURVE SHAPE
NAME
K
E
tr
IEC Curve A
IEC Curve A
0.140
0.020
9.7
IEC Curve B
IEC Curve B
13.500
1.000
43.2
IEC Curve C
IEC Curve C
80.000
2.000
58.2
IEC Long-Time Inverse
IEC Long-Time Inv
120.000
1.000
120.0
IEC Short-Time Inverse
IEC Short-Time Inv
0.050
0.040
0.5
Содержание Multilin F650
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Страница 323: ...5 176 F650 Digital Bay Controller GEK 106310AB 5 13 IEC 60870 5 103 PROTOCOL CONFIGURATION 5 SETTINGS 5 ...
Страница 443: ...7 74 F650 Digital Bay Controller GEK 106310AB 7 3 IEC 61850 CONFIGURATOR 7 IEC 61850 PROTOCOL 7 Figure 7 21 ...
Страница 457: ...7 88 F650 Digital Bay Controller GEK 106310AB 7 3 IEC 61850 CONFIGURATOR 7 IEC 61850 PROTOCOL 7 ...
Страница 513: ...10 28 F650 Digital Bay Controller GEK 106310AB 10 18 THERMAL IMAGE ELEMENT 49 10 COMMISSIONING 10 ...
Страница 529: ...12 6 F650 Digital Bay Controller GEK 106310AB 12 4 RELAY CONFIGURATION 12 FREQUENTLY ASKED QUESTIONS 12 ...
Страница 569: ...A 36 F650 Digital Bay Controller GEK 106310AB A 1 LOGIC OPERANDS APPENDIX A A ...
Страница 735: ...C 24 F650 Digital Bay Controller GEK 106310AB C 8 ANALOG INPUTS APPENDIX C C ...
Страница 743: ...D 8 F650 Digital Bay Controller GEK 106310AB D 5 IEC 60870 5 104 POINT LIST APPENDIX D D ...
Страница 755: ...F 10 F650 Digital Bay Controller GEK 106310AB F 1 IEC 60870 5 103 PROTOCOL APPENDIX F F ...
Страница 766: ...GEK 106310AB F650 Digital Bay Controller G 11 APPENDIX G G 1 FACTORY DEFAULT LOGIC G ...
Страница 767: ...G 12 F650 Digital Bay Controller GEK 106310AB G 1 FACTORY DEFAULT LOGIC APPENDIX G G ...
Страница 801: ...I 2 F650 Digital Bay Controller GEK 106310AB I 1 GE MULTILIN WARRANTY APPENDIX I I ...