温升计算和电阻反推

RESISTANCE TEST SHEET Resistance measurement by Resistance method Remark: Times (sec)Hot resistance () 5.000165.000 10.000136.000 15.000101.000 20.00092.000 25.00081.000 30.000 35.000 40.000 45.000 50.000 55.000 60.000 Graph of hot resistance plotted against time Initial ambient temp. (t1)25.000 C 65605550454035302520151050 0 20 40 60 80 100 120 140 160 180 time (sec) Hot resistance (ohm) Final ambient temp. (t2)27.000 C Initial Resistance (r1) at t179.000 Final Resistance (r2) at t2 Temperature rise of windingK Temperature of winding27.0 C 65605550454035302520151050 0 20 40 60 80 100 120 140 160 180 time (sec) Hot resistance (ohm) COR spreadsheet for UL 745 COR Spreadsheet ModelLocationArmature File NumberTorque ProjectRPM Power Current Start TimeIntervalVoltage 55 timeR2Temp 1Temp 2R1(Cold Arm)Delta T (C)-229.1 (seconds)(ohms)CC(Ohms) 025.0002225211.000 518.000 1011.000 15 20 25 30 35 40 45 50 55 60 650.886 700.883 75 80 85 90 95 100 printed: 2009/11/23 Correlation Coeff100.0% Test Conducted By:_/_ printsigned Date Conducted:_/_/_ D De et te er rmmi in ni in ng g R R2 2t t= =0 0 b by y L Li in ne ea ar r R Re eg gr re es ss si io on n MMe et th ho od d 0510 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 0.000 5.000 10.000 15.000 20.000 25.000 30.000 T Ti imme e ( (S Se