Basler Electric BE1-50/51B-235 - Manual (Page 47)

9252000898 Rev B BE1-50/51B-235/-236 Characteristic Curves i
APPENDIX A • CHARACTERISTIC CURVES
TABLE OF CONTENTS
APPENDIX A • CHARACTERISTIC CURVES .......................................................................................... A-1
INTRODUCTION.................................................................................................................................... A-1
INSTANTANEOUS OVERCURRENT CHARACTERISTICS ................................................................ A-1
Timing ................................................................................................................................................. A-1
Pickup ................................................................................................................................................. A-1
TIME OVERCURRENT CHARACTERISTICS ...................................................................................... A-1
Inverse Time Functions ...................................................................................................................... A-2
Characteristic Curve Groups .............................................................................................................. A-2
Timing Accuracy ............................................................................................................................... A-17
Fixed Time Characteristic ................................................................................................................. A-17
INTEGRATING TIME RESET CHARACTERISTIC ............................................................................. A-17
Figures
Figure A-1. Instantaneous Characteristic Curves
...................................................................................... A-1
Figure A-2. Short Inverse (S) Time Characteristic Curve (SW3-3 Off, Similar to ABB CO-2) .................. A-3
Figure A-3. Long Inverse (L) Time Characteristic Curve (SW3-3 Off, Similar to ABB CO-5) ................... A-4
Figure A-4. Definite Time (D) Time Characteristic Curve (Similar to ABB CO-6) ..................................... A-5
Figure A-5. Moderately Inverse (M) Time Characteristic Curve (Similar to ABB CO-7) ........................... A-6
Figure A-6. Inverse (I) Time Characteristic Curve (SW3-3 Off, Similar to ABB CO-8) ............................. A-7
Figure A-7. Very Inverse (V) Time Characteristic Curve (SW3-3 Off, Similar to ABB CO-9) .................... A-8
Figure A-8. Extremely Inverse (E) Time Characteristic Curve (SW3-3 Off, Similar to ABB CO-11) ......... A-9
Figure A-9. BS142 Very Inverse (BS142-B) Time Characteristic Curve ................................................. A-10
Figure A-10. BS142 Extremely Inverse (BS142-C) Time Characteristic Curve ...................................... A-11
Figure A-11. Short Inverse (S2) Time Characteristic Curve (SW3-3 On, Similar to GE IAC 55) ............ A-12
Figure A-12. Long Inverse (L2) Time Characteristic Curve (SW3-3 On, Similar to GE IAC 66) ............. A-13
Figure A-13. Inverse (I2) Time Characteristic Curve (SW3-3 On, Similar to GE IAC 51) ....................... A-14
Figure A-14. Very Inverse (V2) Time Characteristic Curve (SW3-3 On, Similar to GE IAC 53) ............. A-15
Figure A-15. Extremely Inverse (E2) Time Characteristic Curve (SW3-3 On, Similar to GE IAC 77) .... A-16
Figure A-16. Integrating Reset Characteristic Curve ............................................................................... A-17
Tables
Table A-1. Time Characteristic Curve Constants with Switch SW3-3 Open (Off)
..................................... A-2
Table A-2. Time Characteristic Curve Constants with Switch SW3-3 Closed (On) .................................. A-2