EV-SS热塑性弹性体绝缘热塑性弹性体护套电动汽车传导充电系统用电缆Intheprocessoflayingcablesincablesheathsurfacescratchdamageisacommonphenomenon,theslightdamageonlyhurtthesheath,howtoensurethequalityofrepair,andrepairtimeisshort,andcanguaranteethequalityofthecablehasbecomegenerallyconcernedbyc***umers.Moreover,theinvestmentis***all,anditiseasytoberealizedunderthebadconditi***inthefield.Therefore,therepairtechnologyandqualityofthefieldjacketarebecomingmoreandmoreconcernedbyusers.电缆的现场施工条件一般比较恶劣，可能位于初步建设的发电厂，也可能位于初步正在建设的野外新建铁路，可能在桥架上，还可能在电缆隧道内，由于野外电缆护套的修补都采用塑焊枪进行，而且塑焊枪的加热需要220V的交流电，而处于新兴建设的野外工程，现场一般都缺乏电源，或者有电源可能由于现场电缆的敷设位置的随即性，给电源的提供带来了一定的困难，因此要实现电缆的护套的修补，一方面是人员的到位，另一方面主要是电源的提供，只有作好上述两件基础准备工作，才能实现电缆护套修补工作的正常开展和进行。EV-SS充电桩电缆Thec***tructionsiteconditi***ofthecableisrelativelypoor,maybeintheinitialc***tructionofpowerplant,thenewrailwayislocatedintheinitialfieldmayalsobeunderc***truction,maybeonthebridge,mayalsobeinthecabletunnel,becausethefieldofcablesheathrepairusingplasticweldingtorch,weldingtorchandheatingplasticneed220Valternatingcurrent,andinnewc***tructionengineeringinthefield,thesceneisgenerallyalackofpower,orpowercablelayingpositionmaybeduetothesceneimmediately,itisdifficultforpowersupply,thustorealizethecablesheathrepair,ontheonehandisthestaffinplace,ontheotherhand,themainpowersupplyisprovidedonlyfortheabovetwopreparatorywork,inordertoachievethenormalworkofthecablesheathrepairand.为便于电缆修补工作的顺利进行，施工单位要配备有野外小型发电机。同时处于现场修补的方便现在提供的塑料焊枪的质量要过硬。喷头加热面积要大，而且加热速度要快。而且电缆放线过程破损部位具有随机性，在一般的城市和平原地区，此项工作比较好开展，但是在一些山区地带，由于收到复杂地形的影响，电缆的修补工作其实是很艰难的。因此要减少相应方面的投入和快速解决问题，一个很关键的问题是电缆敷设过程人员的配备数量必须足够，而且采用正规的电缆***敷设设备进行正规放线，避免和减少电缆放线过程中出现护套破损的现象。EV-SS充电桩电缆Inordertofacilitatethe***oothoperationofcablerepair,thec***tructionunitshallbeequippedwitha***allfieldgenerator.Atthesametimeatthescenetorepairtheconvenienceofthequalityoftheplasticguntoprovideexcellent.Theheatingareaofthenozzleislarge,andtheheatingspeedisfast.Andthecableofdamagedpartsisrandom,ingeneralthecityandplainareas,thisworkiscarriedout,butinsomemountainousareas,duetotheinfluenceofcomplextopography,cablerepairworkisverydifficult.Therefore,toreducethecorrespondinginputsandquicklysolvetheproblem,itisakeyproblemwiththenumberofcablelayingprocesspersonnelmustbesufficient,andthecablelayingequipmentprofessionalregularregularline,and***oidthesheathbreakageappearstoreducethecableintheprocess.电缆的现场修补方面需要的技术不是很高，电缆敷设施工单位，在电缆发生破损后，一定要在确认电缆内部没有受到损伤的前提下，然后在对电缆进行修补，否则电缆护套修补的实际意义不大。电缆的修补一定要及时，否则时间一长外部的水分和潮气进入，将会影响电缆的正产使用寿命。在南方梅雨天气电缆端部在敷设完毕后，对电缆的端头因没有及时进行密封处理，造成流入电缆沟内的水分进入电缆断头10-20米不等，剥开端头的绝缘发现导体都已全部发黑，从而造成敷设后电缆的浪费，因此对于敷设完毕的电缆还是要加强相应方面的检查，维护和保管，防止电缆在通电使用前应现场各种外部因素造成电缆寿命的缩短和终结。Cablesiterepairneedtechnologyisnotveryhigh,cablelayingc***tructionunitsinthecableisdamaged,mustbeconfirmednodamageinsidethecableunderthepremise,andtheninthecablewasrepaired,otherwisetherewasnopracticalmeaningofcablesheathrepair.Cablerepairmustbetimely,otherwisealongtimeexternalmoistureandmoisturetoenter,willaffecttheservicelifeofthecableisoff.Inthesouthendofthecablelayinginrainyweatheraftertheendofthecablebecausethereisnotimetobesealed,resultingintheinflowofwaterintothecabletrenchcablebreakage10-20meters,insulationconductorfoundareallblackpeelend,resultinginawasteofelectricitycablelaying,cablelayingiscompletedfortheistostrengthenthecorrespondingaspectsofinspection,maintenanceandsafekeeping,preventthecableinthepowerfieldbeforeuseshouldbeavarietyofexternalfactorsandshortentheservicelifeofthecableend.电缆的现场修补也所用的一些工具和材料必须准备充分，塑料焊枪是必备的，高压绝缘胶带，防水胶带和塑料绝缘和护套剥切下来的皮子，等密封材料，也必须准备，因为电缆绝缘护套材料主要分为交联聚乙烯，聚乙烯，聚***等材料。有些材料属于热固性材料，如交联聚乙烯绝缘无法重复熔融再次利用，在现场用原材料进行修补，只能用高压绝缘胶带和美国3M公司提供的修补胶带系列进行修补。而有些材料属于热塑性材料，完全可以再次用高温使其熔融利用，中国电线电缆网（线缆315网）如聚乙烯，聚***等材料，有可以现场取材，利用电缆端部剥切下来的边角护套料切成细条，就可以实现对低压电缆绝缘和护套方面的修补，其修补质量完全可以达到电缆正常使用性能方面的要求。再一个对于中压电缆现场敷设过程出现的护套破损现象的处理，不能过于粗糙，一个是电缆的敷设过程必须请拿轻放，再一个电缆出现外部破损后，其内部绝缘的***情况有时是不好说的，笔者曾经对现场敷设过程施工不小心造成外护套多处破损的电缆进行过返厂试验，发现电缆的破损部位出现了局部放电超标和击穿现象，因此对于中压电力电缆的在现场敷设过程出现外护套破损后，***好是截断做中间接头或重新更换电缆，因为对电缆破损部位进行护套修补后，可能存在使用隐患。EV-SS充电桩电缆Someofthetoolsandmaterialsareusedforon-siterepairingcablesmustbefullyprepared,plasticweldingisnecessary,high-voltageinsulationtape,waterprooftapeandplasticinsulationandsheathstrippingleathercut,suchassealingmaterial,alsomustbeready,becausethecableinsulationsheathmaterialc***istsofcross-linkedpolyethylene,polyethylene,PVCandothermaterials.Somematerialsarethermosettingmaterial,suchascrosslinkingpolyethyleneinsulationcannotberepeatedagainbymelting,repairtherawmaterialsusedinthefield,withhighvoltageinsulatingtapeandprovidedbytheUnitedStates3Mseriescanonlyrepairrepairtape.Somematerialisakindofthermoplasticmaterial,canagainwithhightemperaturetomelttheChinesewire(cable315)suchaspolyethylene,PVCandothermaterials,canbedrawnbythescene,theendofthecablestrippingdownthecornerofsheathmaterialcutintothinstripscanbeachievedonlowvoltagecablesandinsulationthesheathrepair,therepairqualitycanmeettheperformancerequirementsofthenormaluseofthecable.Anotherphenomenonforprocessinginstallationprocedureofthemediumvoltagecablesheathdamage,cannotbetoorough,isaprocessoflayingcablesmustbewithcare,acableexternaldamage,damagetheinternalinsulationissometimesnottosay,Ih***emultiplebrokencableoutersheathofbackfactorytestonsitelayingc***tructionprocesscausedbycareless,founddamagedcablepartialdischargeandbreakdownappearedtoexceedthestandardphenomenon,soformediumvoltagepowercablelayingprocessappearedonthesceneaftertheoutersheathdamage,itisbesttodoortoreplacethetruncatedmiddlejointofcablesheath,becauserepairdamagedpartsofthecable,theremaybetheuseofhiddendangers.)