Basler BE1-951 - Synchronism-Check Protection; Appendix A: Time Overcurrent Characteristic Curves

9328900990 Rev L BE1-951 Time Overcurrent Characteristic Curves i
APPENDIX A • TIME OVERCURRENT
CHARACTERISTIC CURVES
TABLE OF CONTENTS
APPENDIX A • TIME OVERCURRENT CHARACTERISTIC CURVES ...................................................A-1
GENERAL..............................................................................................................................................A-1
CURVE SPECIFICATIONS ...................................................................................................................A-1
TIME OVERCURRENT CHARACTERISTIC CURVE GRAPHS...........................................................A-2
THE 46 CURVE .....................................................................................................................................A-4
Figures
Figure A-1. Time Characteristic Curve S, S1, Short Inverse (Similar to ABB CO-2)................................A-6
Figure A-2. Time Characteristic Curve S2, Short Inverse (Similar To GE IAC-55)...................................A-7
Figure A-3. Time Characteristic Curve L, L1, Long Inverse (Similar to ABB CO-5) .................................A-8
Figure A-4. Time Characteristic Curve L2, Long Inverse (Similar To GE IAC-66)....................................A-9
Figure A-5. Time Characteristic Curve D, Definite Time (Similar To ABB CO-6) ...................................A-10
Figure A-6. Time Characteristic Curve M, Moderately Inverse (Similar to ABB CO-7)...........................A-11
Figure A-7. Time Characteristic Curve I, I1, Inverse Time (Similar to ABB CO-8) .................................A-12
Figure A-8. Time Characteristic Curve I2, Inverse Time (Similar to GE IAC-51)....................................A-13
Figure A-9. Time Characteristic Curve V, V1, Very Inverse (Similar to ABB CO-9) ...............................A-14
Figure A-10. Time Characteristic Curve V2, Very Inverse (Similar to GE IAC-53).................................A-15
Figure A-11. Time Characteristic Curve E, E1, Extremely Inverse (Similar to ABB CO-11)...................A-16
Figure A-12. Time Characteristic Curve E2, Extremely Inverse (Similar to GE IAC-77) ........................A-17
Figure A-13. Time Characteristic Curve A, Standard Inverse.................................................................A-18
Figure A-14. Time Characteristic Curve B, Very Inverse ........................................................................A-19
Figure A-15. Time Characteristic Curve C, Extremely Inverse ...............................................................A-20
Figure A-16. Time Characteristic Curve G, Long Time Inverse..............................................................A-21
Figure A-17. 46 Time Characteristic Curve.............................................................................................A-22
Tables
Table A-1. 51P, 51N, and 51Q Time Characteristic Curve Constants......................................................A-2
Table A-2. Characteristic Curve Cross-Reference....................................................................................A-3
Table A-3. Time Dial Setting Cross-Reference.........................................................................................A-4