X电容和放电电阻计算以及Y电容漏电流计算表格文件下载.xls
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LeakageCurrentandCapacitanceDischargeCalculatorforXcapsandYcapsTheselectionofanAClinefilterinfluenceshowapieceofequipmentwillperformduringproductsafetytests.Specifically,capacitancedischargeisanissueoftheXcapacitanceofthefilter.LeakagecurrentisprimarilyafunctionoftheYcapacitance.EnterthevalueoftheXcapacitorsandYcapacitorsimplementedinthelinefilteryouareconsideringtogetanideaofhowthefilterwillperfomduringasafetyanalysis.TotalnominalXcapacitance:
@#@4uFTotalnominalshuntresistance:
@#@400kOhmsUse10MOhmsifthereisnoshuntresistance(proberesistance).Nominal,onebranch,Ycapacitance:
@#@10.8nFMainsvoltage(worstcase):
@#@120VrmsMainsfrequency(worstcase):
@#@60HzWiththesevaluestheresultsofyoursafetytestswilllookapproximatelylikethoseshownbelow.Leakagecurrentfromlinetoground:
@#@0.4886mACommonlimitsare.75mAforungroundedequipment,and3.5mAforgroundedequipment.Timeconstantofcapacitancedischarge:
@#@1.600sNormally,thevoltageacrosstheplugpinsmustbelessthanPeakvoltageacrosspinsafteronesecond:
@#@90.84Vpeak62.79VpeakonesecondafterbeingdisconnectedVoltageacrosspinsaftertenseconds:
@#@0.33Vpeakfromthesupply.Industrialtwistlockconnectorsmustcomplywiththesamelimit,buttensecondsafterdisconnectionfromtheirsupply.LeakageCurrentandCapacitanceDischargeCalculatorforXcapsandYcapsTheselectionofanAClinefilterinfluenceshowapieceofequipmentwillperformduringproductsafetytests.Specifically,capacitancedischargeisanissueoftheXcapacitanceofthefilter.LeakagecurrentisprimarilyafunctionoftheYcapacitance.EnterthevalueoftheXcapacitorsandYcapacitorsimplementedinthelinefilteryouareconsideringtogetanideaofhowthefilterwillperfomduringasafetyanalysis.Use10MOhmsifthereisnoshuntresistance(proberesistance).Commonlimitsare.75mAforungroundedequipment,and3.5mAforgroundedequipment.Normally,thevoltageacrosstheplugpinsmustbelessthanonesecondafterbeingdisconnectedfromthesupply.Industrialtwistlockconnectorsmustcomplywiththesamelimit,buttensecondsafterdisconnectionfromtheirsupply.