Thytronic NA011 - Page 4

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NA011 - Manual - 05 - 2022
Residual overcurrent 50N/51N - Extremely inverse time curve (IEC 60255-3/BS142 type C) ..........................................................77
8.2 APPENDIX A2 - Inverse time ANSI/IEEE curves ........................................................................................................................................ 78
Mathematical formula ................................................................................................................................................................................. 78
Phase overcurrent 50/51 - Moderately inverse time curve (ANSI/IEEE type MI) ............................................................................. 79
Phase overcurrent 50/51 - Very inverse time curve (ANSI/IEEE type VI) .......................................................................................... 80
Phase overcurrent 50/51 - Extremely inverse time curve (ANSI/IEEE type EI) ..................................................................................81
Residual overcurrent 50N/51N - Moderately inverse time curve (ANSI/IEEE type MI) ...................................................................82
Residual overcurrent 50N/51N - Very inverse time curve (ANSI/IEEE type VI) ................................................................................ 83
Residual overcurrent 50N/51N - Extremely inverse time curve (ANSI/IEEE type EI) ........................................................................84
8.3 APPENDIX A3 - Inverse time I
2
t curves ........................................................................................................................................................85
Formula generale ..........................................................................................................................................................................................85
Phase overcurrent 50/51 - I
2
t inverse curves (I2t=K) ..............................................................................................................................86
Residual overcurrent 50N/51N - I
2
t inverse curves (I2t=K) ....................................................................................................................87
8.4 APPENDIX B1 - I/O Diagram .......................................................................................................................................................................... 88
8.5 APPENDIX B2 - Interfaces ............................................................................................................................................................................. 89
8.6 APPENDIX B3 - Connection diagrams ......................................................................................................................................................... 90
8.7 APPENDIX C - Dimensions ..............................................................................................................................................................................94
8.8 APPENDIX D- EC Declaration of conformity ................................................................................................................................................95