BVV型电缆内护层生产工艺的改进及效应

20126No．62012ElectricWire＆Cable201212Dec．2012BVV421007BVV。BVVTM246．1A1672-6901201206-0008-03TheProductionProcessDevelopmentandEffectfortheInnerSheathLayeroftheTypeBVVCableGUOGuo-qingGCEAHengyangCablesCo．Ltd．Hengyang421007ChinaAbstractThearticleintroducestheimprovementtothemanufacturingprocessoftheinnersheathlayerofBVVtypecablesfromtwoaspects．Firstlyimprovethematerialoftheinnersheathlayertosolvetheexistingproblemfunda-mentallyincurrentproductionSecondlychangetheoriginalrouteandmodelofextrusionprocesstoreducethemanufacturingcostandimprovetheworkefficiency．KeywordsthetypeBVVcableinnersheathlayerproductionprocessdevelopmentmaterialextrusionofdoublelayereffect2012-05-091976－．7421007．0300/500V60227IEC10BVVBVVPVC。。11．11BVV。BVV2PVCPVC。1．2121BVV、、3。22．1BVV。GB/T5023．4—2008《450/750V4》2BVV。。GB/T5023．4—2008PVC。PVCPVC、、、。、、、。PVC。GB/T5023．4—2008PVC。、1、。2PVC37。2．21mm、。390651．5m。1234。31－2－3－654－655－6－907－958－9－10－11－3BVV2×1．5BVV5×2．51000m。、、GB/T5023．4—2008。1。。1BVV2×1．55×2．52×1．55×2．5/mm0．40．40．50．6/g/cm3——2．132．12/MPa——7．16．5/%——17．52020·9·20126No．62012ElectricWire＆Cable201212Dec．2012ρ20L/S=ρ20L/SS=S×ρ20/ρ208ρ20=0.0168868Ω·mm2/m。S=a×b=3.55×10=35.5mm2。ρ20=0.016700Ω·mm2/m8S=35.11mm2。GB/T7673.3—20083.55mm×10mm3.55±0.05mm×10±0.07mma=3.53±0.01mmb=9.95±0.015mm。。2.33.55mm×10mm7。70.000487～0.000497Ω2%。31。72。2%。1．J．20061139-41．2．J．1994727．3．J．20022檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿檿48-49．9BVV25%2。2BVVBVV5×2．5PVC30%PVC+70%/kg/km20．629．78．9+20．8//kg99、3．6//km185155/h/km①73//km5624/241179①。4。BVV25%。1GB/T5023．4—2008450/750V4S．·02·20126No．62012ElectricWire＆Cable201212Dec．2012