剖析低压五芯电力电缆的结构缺陷

20125No．52012ElectricWire＆Cable201210Oct．2012210007。TM247A1672-6901201205-0013-03StructureDiscussionofFiveCoresLowVoltagePowerCableCHENNing-hongJiangsuProvinceProductQualitySupervisionandInspectionInstituteNanjing210029ChinaAbstractAqualitydisputeoflowvoltagefivecorespowercableisintroduced．Thereasonofdisputewasanalyzedfromtwoaspectscontainingstructuresizeandarrangementmode．Theprocessplanningofthefivecoresisdesigneda-gainwhichisdifferentfromtheformer．Thenewdesignismorecompacterwhichcanimprovethesafetyandreliabilityofthecable．Keywordslowvoltagefivecorespowercablereasonanalyzesuggestionprocesscalculation2012-02-211959－．5210007．00．6/1kV。、。。、。1YJV－0．6/1kV4×150+1×70mm2100mGB/T12706．1—2008。10～20m。。22．1150mm270mm2“。。10．5～11mm22．0mm10．2mm。1．4mm12．3～12．5mm。150mm2CAD12．5mm14．3mm1。1YJV－0．6/1kV4×150+1×70mm2CAD。90mmPPPP、。2．2GB50168—2006《》100m7N/mm215m/min。。。。3“”。3．1。PP。3．2、。“”。3．3。YJV－0．6/1kV4×150+1×70mm22。2YJV－0．6/1kV4×150+1×70mm2R－R0－β－T－r1－r2－H－B－Sj－R。2。HOEs1=r2β－θ1/2FOF1s2=R0+T2β－θ1/2B1O1F1s3=r21π/2－θ1/2C1O2E1s4=r22π/2+θ2/2·41·20125No．52012ElectricWire＆Cable201210Oct．2012△O2OC3s5=r2+T2ctgθ2/2△O1OB3s6=r1+T2ctgθ1/2△GOB3s7=r1+T2ctg2θ1tgθ2/2B1B3C3C1s8=Tr2+Tctgθ2－r1+Tctgθ1EOE1s9=R2θ1－θ2/2Sj=2s1+s3+s4+s5+s9－s2－s6－s8fR=R2β－θ2+π/2－θ1r21+π/2+θ2r22+r22－T2ctgθ2+T2－r21ctgθ1－R0+T2β－θ1－Sj=0θ1=arcsinr1+TR0+r1+Tθ2=arcsinr2+TR－r2Sj=S=π4d2n/μ/ηdmmnμ1．035～1．040η0．83～0．90。fR“Rn+1=Rn－fRnf'Rnf'Rn=2β－arcsinT+r2R－r()[]2+2r2R+TR－2r2－槡T“”。。fRRn。r1=r2=0TRθ2≈T/Rctgθ2≈R/T。fRfR=R2β－2RT+T2ctgθ1－R0+T2β－θ1－Sj=0RRn=T+T21－βctgθ1+βSj+ββ－θ1R0+T槡2βθ1=arcsinTR0+TR=18．0mmB=20．7mmH=11．0mm3。3YJV－0．6/1kV4×150+1×70mm244+1。、。。GB/T12706．1—2008。1．J．2006522-23．2GB/T12706．1—20081kV3kVS．3．J．2002213-17．·51·20125No．52012ElectricWire＆Cable201210Oct．2012