X电容和放电电阻计算以及Y电容漏电流计算.xls
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- 上传时间:2022-10-29
- 格式:XLS
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X电容和放电电阻计算以及Y电容漏电流计算.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.
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- 关 键 词:
- 电容 放电 电阻 计算 以及 漏电
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