Densebusduct,highstrengthenclosedbusduct(CFW)

    该工艺不受板材的限制，外壳做成华夫饼状，提高了母线的机械强度，母线的水平截面可达13m，由于外壳的盘绕，凹槽的位置被有意分开固定，母线之间的距离为18mm。线路间通风良好，明显提高了母线槽的防潮散热功能，更适合华南地区的气候；线路间有一定的空隙，会引起导线温度的升降，从而提高了过载能力，降低了磁振荡噪声。但其杂散电流和电感电抗远大于密集型母线，因此其导电杆截面必须大于密集型绝缘插入式母线截面。

 Theprocessisnotlimitedbytheplate,andtheshellismadeintowaffleshape,whichimprovesthemechanicalstrengthofthebus.Thehorizontalsectionofthebuscanreach13m.Duetothewindingoftheshell,thepositionofthegrooveisdeliberatelyseparatedandfixed,andthedistancebetweenthebusesis18mm.Thegoodventilationbetweenthelinesobviouslyimprovesthemoisture-proofandheatdissipationfunctionofthebusduct,whichismoresuitablefortheclimateofSouthChina;thereisacertaingapbetweenthelines,whichwillcausetheriseandfalloftheconductortemperature,thusimprovingtheoverloadcapacityandreducingthemagneticoscillationnoise.Butitsstraycurrentandinductancereactancearemuchlargerthanthatofthedensetypebus,sothesectionofitsconductingrodmustbelargerthanthatofthedensetypeinsulationplug-inbus.

    空气塞母线槽（BMC）

    Airplugbusduct(BMC)

    由于总线之间的连接器和铜的软结合，南方地区的天气潮湿，连接器容易氧化，这使得连接器和总线之间的接触不良，并使接触点易于加热，因此在南方地区很少使用。节点间体积过大，水平母线截面尺寸不一致，外形不美观。

    Duetothesoftcombinationofconnectorsandcopperbetweenbuses,theweatherinsouthernChinaishumidandtheconnectorsareeasytooxidize,whichmakesthepoorcontactbetweenconnectorsandbusesandmakesthecontactpointseasytoheat,soitisrarelyusedinsouthernChina.Thevolumebetweennodesistoolarge,thecrosssectionsizeofhorizontalbusisinconsistent,andtheappearanceisnotbeautiful.

    密集绝缘插入式母线槽（CMC）

    Denseinsulatedplug-inbusduct(CMC)

    其含水量和散热效果较差。在防潮方面，母线在施工过程中容易受到潮湿和水的影响，导致相间绝缘电阻降低。客车的散热主要取决于外壳。由于导线排列紧凑，L2和L3相的热能分布缓慢，母线槽温升很高。密集绝缘插入式母线只能产生不超过3m的水平段，受外板限制。由于母线间气隙小，当母线通过大电流时，会产生强大的电力，导致磁振荡频率叠加，产生过大的噪声。插入式母线槽是一种干线系统，具有体积小、结构紧凑、运行可靠、传输电流大、分接馈电方便、维护方便、能耗低、动态热稳定性好等优点

 Itswatercontentandheatdissipationeffectarepoor.Intheaspectofdampproof,thebusiseasytobeaffectedbydampnessandwaterintheconstructionprocess,whichleadstothedecreaseofinsulationresistancebetweenphases.Theheatdissipationofthebusmainlydependsontheshell.Duetothecompactarrangementofconductors,thethermalenergydistributionofL2andL3phasesisslow,andthetemperatureriseofbusductisveryhigh.Theplug-inbuswithdenseinsulationcanonlyproduceahorizontalsectionofnomorethan3m,whichislimitedbytheouterplate.Duetothesmallairgapbetweenbuses,whenbusespassthroughlargecurrent,strongpowerwillbegenerated,resultinginthesuperpositionofmagneticoscillationfrequencyandexcessivenoise.Theplug-inbusductisakindoftrunksystem,whichhastheadvantagesofsmallvolume,compactstructure,reliableoperation,largetransmissioncurrent,convenienttapandfeed,convenientmaintenance,lowenergyconsumption,gooddynamicthermalstability,etc

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