额定电压35KV及以下铜、铝芯交联聚乙烯绝缘电力电缆

1额定电压6kV～35kV交联聚乙烯绝缘电力电缆Cross-linkingpolyethyleneinsulatedpowercableswithratedvoltagesfrom6kVupto35kV一、产品用途Productsapplication交联聚乙烯绝缘电缆适用于配电网、工业装置或其他需要大容量用电领域，用于固定敷设在交流50Hz、额定电压6kV～35kV的电力输配电线路上，主要功能是输送电能。交联聚乙烯绝缘阻燃电缆具有阻止火势在电缆电路蔓延的功能，可避免火灾事故扩大以减少损失，适用于地铁、遂道、高层建筑等电缆敷设密集程度较高的场所。交联聚乙烯绝缘无卤低烟阻燃电缆具有优良的阻燃性、耐腐蚀性及低烟浓度，是一种环保型产品，适用于地铁、商场、学校等人员密集型场所。上述产品为通常条件下使用的产品，不适用一些特殊条件的场合，如水下、船用、核电站等。XLPEpolyethyleneinsulatedpowercables,Thisproductisapplicabletobeingfixedlylaidonthetransmissionanddistributionlineofalternativecurrentrating50Hzandratedvoltageupto6/35kVwiththeuseforpowertransmission,whichisappliedtotherangeofdistributionnetwork,industrialequipments,highelectricityconsumptionplacesetc.XLPEpolyethyleneinsulatedflame-retardantpowercables,Theproducthasgoodperformanceonpreventingfireburningonthecircuit,whichcanavoidfireaccidentsandlosses.Theproductscanbeusedinsubway,tunnelsandhigh-risebuildingsetc.XLPEpolyethyleneinsulatedlow-smokezero-halogenflame-retardantpowercables,Theenvironmentalproducthasgoodperformanceonflame-retardant,corrosionresistanceandlow-smoke,whichissuitabletobelaidincrowdedplaces,suchassubway,shoppingmallorschoolsetc.Thisproductisthenormalusedcable,notsuitableforsomespecialplaces,suchasunderwater,ship,nuclearstation,etc.二、产品主要技术特点Techniquefeatures交联聚乙烯绝缘电缆采用过氧化物交联的方法，使聚乙烯分子由线型分子结构变为三维网状结构，由热塑性材料变成热固性材料，工作温度从70℃提高到90℃，显著提高电缆的载流能力。交联聚乙烯绝缘电缆具有优越的电气性能、耐热性能、耐化学性能、耐环境应力开裂性能、抗老化性能，具有长期的使用寿命。无卤低烟阻燃交联聚乙烯绝缘电缆具有优良的阻燃特性，护套材料不含卤素，能够保证在燃烧时只释放少量的毒性和腐蚀性气体，具有产生烟雾较少等特点，是一种环保型的新产品，同时具有优越的电气性能、耐热性能、耐化学性能、耐环境应力开裂性能、抗老化性能，具有长期的使用寿命。本产品结构简单，制造周期短，易于安装和维护，敷设时不受落差限制。XLPEpolyethyleneinsulatedpowercables,thisproductismanufacturedbyparasiticalcross-linkingprocedure,thestraight-chainpolyethylenewillbechangedasnetworkstructurebyusethismethod,whichtransformedthermoplasticmaterialintothermosettingmaterial.Theworkingtemperatureisupto90℃,whichcanraisethecablecurrentcapacityhighly.XLPEpolyethyleneinsulatedpowercables,theproducthasgoodperformanceonelectricalcharacteristic,heatresistance,chemicalresistance,environmentalstresscrackingresistanceandagingresistance,allwhichmakethecablehasalongusefullife.XLPEpolyethyleneinsulatedlow-smokezero-halogenflame-retardantlow-smokezero-halogenflame-retardantpowercables;theproductisanewenvironmentalprotectedcablewithgoodflame-retardantperformance,whichjustreleasesfewpoisonousandcorrosivegases.Theproducthasgoodperformanceonelectricalcharacteristic,heatresistance,chemicalresistance,environmentalstresscrackingresistanceandaging2resistance,allwhichmakesthecablehasalongusefullife.Theproductcharacteristicissimplestructure,shortproductionperiod,easyinstallationandmaintained,especiallythereisnolimitofheaddropduringthecablelaying.三、产品执行标准StandardsIEC60502-2:1997额定电压1kV(Um=1.2kV)到30kV(Um=36kV)挤包绝缘电力电缆及附件第2部分：额定电压6kV(Um=7.2kV)到30kV(Um=36kV)电缆Powercableswithextrudedinsulationandtheirforratedvoltagesfrom1kV(Um=1.2kV)upto30kV(Um=36kV)Part2:Cablesforratedvoltagesof6kV(Um=7.2kV)upto30kV（Um=36kV）GB/T12706.2-2002额定电压1kV(Um=1.2kV)到35kV(Um=40.5kV)挤包绝缘电力电缆及附件第2部分：额定电压6kV(Um=7.2kV)到30kV(Um=36kV)电缆Powercableswithextrudedinsulationandtheirforratedvoltagesfrom1kV(Um=1.2kV)upto35kV(Um=40.5kV)Part2:Cablesforratedvoltagesof6kV(Um=7.2kV)upto30kV（Um=36kV）GB/T12706.3-2002额定电压1kV(Um=1.2kV)到35kV(Um=40.5kV)挤包绝缘电力电缆及附件第3部分：额定电压35kV(Um=40.5kV)电缆Powercableswithextrudedinsulationandtheirforratedvoltagesfrom1kV(Um=1.2kV)upto35kV(Um=40.5kV)Part3:Cablesforratedvoltagesof35kV(Um=40.5kV)GB/T19666-2005阻燃和耐火电线电缆通则GeneralRulesofflame-retardingandfireproofcablesGB/T3956-1997电缆的导体ConductorofCables四、使用特性Operatingcharacteristics1、额定电压RatedVoltage电缆额定电压U0/U(Um)表示方法如下：RatedVoltageofcableU0/U(Um)，asfollow：U0/U(Um)＝3.6/6(7.2)－6/6(7.2)－6/10(12)－8.7/10(12)－8.7/15(17.5)－12/20(24)－18/30(36)－21/35(40.5)－26/35(40.5)kV。其中：U0：电缆设计用的导体对地或金属屏蔽之间的额定工频电压；U：电缆设计用的导体间的额定工频电压；Um：设备可承受的“最高系统电压”的最大值。电缆的额定电压应适合电缆所在系统的运行条件。为了便于选择电缆，将系统划分为下列三类：——A类：任一相导体与地或接地导体接触时，能在1min内与系统隔离。——B类：可在单相接地故障时作短时运行，但任何情况下不宜超过8h，每年接地故障总持续时间不宜超过125h。——C类：包括不属于A类和B类的系统。注：在系统接地故障不能立即自动解除时，故障期间加在电缆绝缘上过高的电场强度，会在一定程度上缩短电缆寿命。如系统预期会经常地运行在持久的接地故障状态下，该系统应划为C类。Notes：U0：RatedA.C.Voltagebetweenconductorandground/metalscreen;U：RatedA.C.VoltagebetweenconductorsUm：Themaximumsystemvoltagewhichtheequipmentscanbebeared。Theratedvoltageofcableshallbeapplicabletosystemoperationconditionwherethecablelainin.According3tocableselecting,thesystemwillbedescribedas3typesasfollow:SystemcategoryA──Thiscategorycomprisesthosesystemsinwhichanyphaseconductorthatcomesincontactwithearthoranearthconductor.isdisconnectedfromthesystemwithin1min.SystemcategoryB──Thiscategorycomprisesthosesystemwhich,underfaultconditions,areoperated,areoperatedforshortagewithonephaseearthed.Thisperiodshouldnotexceed1h..Foraylongerperiod,notexceeding8honanyoccasion,canbetolerated.Thetotaldurationofearthfaultsinanyyearshouldnotexceed125h.SystemcategoryC──ThiscategorycomprisesallsystemswhichdonotfallintoAandB。Whenthesystemearthfaultcan'tberemovedautomatically,thelifeofcablewillbeshortenedinsomedegreebecauseoftheover-highelectricstressbewaredbycableinsulation