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NC020 - Manual - 05 - 2022
8.2 APPENDIX A2 - Inverse time ANSI/IEEE curves .........................................................................................................................................75
Mathematical formula ..................................................................................................................................................................................75
Phase overcurrent 50/51 - Moderately inverse time curve (ANSI/IEEE type MI) ..............................................................................76
Phase overcurrent 50/51 - Very inverse time curve (ANSI/IEEE type VI) ...........................................................................................77
Phase overcurrent 50/51 - Extremely inverse time curve (ANSI/IEEE type EI) ................................................................................. 78
8.3 APPENDIX A3 - CAPACITOR curves ............................................................................................................................................................. 79
Mathematical formula ................................................................................................................................................................................. 79
RMS phase overcurrent 50/51 RMS - CAPACITOR curve ..................................................................................................................... 80
RMS phase overcurrent 50/51 fundamental - CAPACITOR curve .........................................................................................................81
8.4 APPENDIX B1 - I/O Diagram ...........................................................................................................................................................................82
8.5 APPENDIX B2 - Interfaces ............................................................................................................................................................................. 83
8.6 APPENDIX B3 - Connection diagrams ..........................................................................................................................................................84
8.7 APPENDIX C - Dimensions ..............................................................................................................................................................................85
8.8 APPENDIX D - EC Declaration of conformity ...............................................................................................................................................86
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