9400200990 Rev I DGC-2020 Time Overcurrent Characteristic Curves i
APPENDIX A • TIME OVERCURRENT
CHARACTERISTIC CURVES
TABLE OF CONTENTS
APPENDIX A • TIME OVERCURRENT CHARACTERISTIC CURVES ...................................................A-1
INTRODUCTION ...................................................................................................................................A-1
CURVE SPECIFICATIONS ...................................................................................................................A-1
TIME OVERCURRENT CHARACTERISTIC CURVE GRAPHS...........................................................A-2
Time Dial Setting Cross-Reference....................................................................................................A-3
Figures
Figure A-1. Time Characteristic Curve S, S1, Short Invers
e (Similar to ABB CO-2)................................A-5
Figure A-2. Time Characteristic Curve S2, Short Inverse (Similar To GE IAC-55)...................................A-6
Figure A-3. Time Characteristic Curve L, L1, Long Inverse (Similar to ABB CO-5) .................................A-7
Figure A-4. Time Characteristic Curve L2, Long Inverse (Similar To GE IAC-66)....................................A-8
Figure A-5. Time Characteristic Curve D, Definite Time (Similar To ABB CO-6) .....................................A-9
Figure A-6. Time Characteristic Curve M, Moderately Inverse (Similar to ABB CO-7)...........................A-10
Figure A-7. Time Characteristic Curve I, I1, Inverse Time (Similar to ABB CO-8) .................................A-11
Figure A-8. Time Characteristic Curve I2, Inverse Time (Similar to GE IAC-51)....................................A-12
Figure A-9. Time Characteristic Curve V, V1, Very Inverse (Similar to ABB CO-9) ...............................A-13
Figure A-10. Time Characteristic Curve V2, Very Inverse (Similar to GE IAC-53).................................A-14
Figure A-11. Time Characteristic Curve E, E1, Extremely Inverse (Similar to ABB CO-11)...................A-15
Figure A-12. Time Characteristic Curve E2, Extremely Inverse (Similar to GE IAC-77) ........................A-16
Figure A-13. Time Characteristic Curve A, Standard Inverse.................................................................A-17
Figure A-14. Time Characteristic Curve B, Very Inverse ........................................................................A-18
Figure A-15. Time Characteristic Curve C, Extremely Inverse ...............................................................A-19
Figure A-16. Time Characteristic Curve G, Long Time Inverse..............................................................A-20
Tables
Table A-1. 51 Time Characteris
tic Curve Constants.................................................................................A-2
Table A-2. Characteristic Curve Cross-Reference....................................................................................A-3
Table A-3 .Time Dial Setting Cross-Reference.........................................................................................A-4
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