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SathavahanaIspatLimited发电项目PowerGenerationProjectofSathavahanaIspatLimited6kV高压开关柜技术要求TechnicalRequirementsfor6kVHigh-voltageSwitchgear一.6kV高压开关柜技术附件I.TechnicalSpecificationsof6kVHigh-voltageSwitchgear1．技术标准1.TechnicalstandardsGB3906-91DL404-91IEC2982．技术条件2.Technicalconditions2.1环境温度环境温度最高℃最低℃海拔高度＜1000m年平均相对湿度67%2.1AmbienttemperatureAmbienttemperaturemax.:℃min.:℃Heightabovesealevel:1,000mAnnualaverageRH:67%2.2电气条件额定工作电压kV额定工作电流A（其中1台3000A）额定工作频率50Hz额定短路开断电流kA4秒热稳定电流值kA中性点接地方式中性点不接地2.2ElectricalconditionsRatedworkingvoltagekVRatedworkingcurrentA(3,000Afor1set)Ratedworkingfrequency50HzRatedshort-circuitbreakingcurrentkA4sthermalstabilitycurrentkANeutralpointgroundingtypeN/A3．柜型及元器件3.Cabinettypeandcomponents3.1开关柜型号中置式高压开关柜（KYN28A-台（见图纸）防护等级IP30颜色：双方以色标确定3.1SwitchgearmodelMiddle-builthigh-voltageswitchgear(KYN28A-set(s)(seethedrawings)ProtectionlevelIP30Color:Tobedeterminedbybothpartiesbasedonthecolorcode3.2母线3.2Busbar3.3断路器型号额定工作电压kV额定工作电流A额定开断电流kA额定关合电流kA额定动稳定电流kA4秒热稳定电流kA断路器操作机构弹操分合闸电源220VDC3.3BreakerModelRatedworkingvoltagekVRatedworkingcurrentARatedbreakingcurrentkARatedmakingcurrentkARateddynamicstabilitycurrentkA4SthermalstabilitycurrentkABreakeroperatingmechanismSpring-operatedOpening/Closingpower220VDC技术要求：Technicalrequirements:1）机械寿命达10000次2）采用陶瓷真空灭弧室，铜铬触头材料，纵磁场触头结构3）符合GB1984、JB3855、IEC60056标准4）订货应满足DL/T403《10~35kV户内高压真空断路器订货技术条件》1)Themechanicallifereachesupto10,000times2)Adoptstheceramicvacuuminterrupter,chromium-copper-basedcontactmaterialandlongitudinalmagneticcontactstructure3)ConformstothestandardsGB1984,JB3855andIEC600564)TheordershallmeetDL/T403-TechnicalConditionsforOrdering10~35kVIndoorHigh-voltageVacuumCircuitBreaker3.4电流互感器及电压互感器采用产品，CT、PT规格见设计图纸。3.4Currenttransformerandvoltagetransformer,adoptingproduct,seethedesigndrawingforCTandPTspecs.3.5零序电流互感器选用产品3.5Zero-sequencecurrenttransformer,adoptingproduct3.6避雷器3.6Lightningarrester避雷器为防止操作过电压采用三相复合式过电压保护器，Thelightningarresteradoptsthree-phasecompoundovervoltageprotectorinordertopreventoperationovervoltage三相复合式过电压保护器技术要求：Technicalrequirementsofthethree-phasecompoundovervoltageprotector:1）保护器放电时的电压峰值应不大于设备相间绝缘水平和相对地绝缘允许值，相间保护特性与相对地保护特性相同。1)Thepeakvoltageattheprotectordischargeshallnotbemorethantheequipmentphase-phaseinsulationlevelandphase-to-earthinsulationallowablevalue;thephase-phaseprotectioncharacteristicsshallbethesameasthoseofphase-to-earthprotectioncharacteristics.2）保护器动作后的残压等于保护器放电时的电压峰值。2)Theresidualvoltageaftertheprotectoractsshallbeequaltothepeakvoltageattheprotectordischarge.3）冲击系数等于1，在各种电压波形下动作值相同。3)Theimpactcoefficientshallbe1,withthesameoperatingvaluefordifferentvoltagewaveforms4）操作过电压冲击次数不少于105。4)Theoperatingovervoltageimpactfrequencyshallnotbelessthan105.5）要求采用硅橡胶外套，封闭型结构。5)Thesiliconrubbercasewithenclosedconstructionshallbeadopted.6）过电压保护器应符合下列标准：GB11032-2000〈〈交流无间隙金属氧化物避雷器〉〉JB/T8952-1999〈〈35kV及以下交流系统用复合外套无间隙金属氧化物避雷器〉〉ZBK49005-90〈〈交流有串联间隙金属氧化物避雷器〉〉6)Theovervoltageprotectorshallconformtothefollowingstandards:GB11032-2000AlternatingCurrentMetallicOxideLightningArresterswithoutGapsJB/T8952-1999CompoundSleeveMetallicOxideLightningArresterwithoutGapsforACSystemsat35kVandbelowZBK49005-90AlternatingCurrentMetallicOxideLightningArresterswithoutSeriesGaps7）产品采用安徽赛普电气有限公司产品。7)AdoptsproductsfromAnhuiSaipuElectricCo.,Ltd.3.7开关状态显示仪：见设计图纸，选用保定市中恒合力电气有限公司产品。3.7Switchstatusdisplayer:Seethedesigndrawingsfordetails.ChoosetheonefromBaodingZhonghengHeliElectricalCo.,Ltd..3.8接地开关与带电指示器：厂标3.8Groundingswitchandpotentialindicator:Asmarkedbythemanufacturer.4．设计和结构4.Designandstructure4.1高压开关柜应为五防柜。4.1High-voltageswitchgearshouldbethe5-preventioncabinet.4.2开关柜的外客盖板和门必须是金属的，柜体材料采用进口敷铝锌版，同时具有足够的强度，正常操作和维护不需打开的盖板若不使用工具应不能打开、拆开或移动，而正常操作和维护需打开的盖板和门应不需要工具能打开或移动，并设有连锁装置来保证操作者的安全。4.2Thehousing,coverplateanddooroftheswitchgearmustbemadeofmetalwhilethebodyofimportedaluminumplatedzincplateandwithsufficientstrength.Thecoverplateneedingnottobeopenedinnormaloperationandmaintenanceshouldnotbeabletobeopened,removedormovedwithouttoolswhilethecoverplateanddoorneedingtobeopenedinnormaloperationandmaintenanceshouldbeabletobeopenedormovedwithinterlockdevicesettoensurethesafetyoftheoperator.4.3开关柜应设必要的观察窗，便于观察运行中的设备。4.3Theswitchgearshouldbesetwithnecessaryobservationwindowtoobservetheoperatingequipment.4.4开关柜设有良好的通风系统，使柜内温升不超过各组件温升要求，同时可触及的外壳和盖板温升不超过20℃。4.4Theswitchgearshouldbesetwithexcellentventilationsystemsothatthetemperatureriseinsidethecabinetwillnotexceedthatrequiredbyeverymodule;andthatofthetouchablehousingandcoverplateshouldnotbemorethan20℃.4.5开关柜内设置防潮加热器，开关柜投运时防潮加热器自动断电，开关柜停运时防潮加热器自动投入（开关柜状态显示器成套），该加热器电源为单相220VAC。4.5Theinsideoftheswitchgearissetwithanti-dampheater,whichwillautomaticallypoweroffwhentheswitchgearisputintooperationorautomaticallypowerofwhentheswitchgearstops(switchgearstatusdisplayinset)andwhosepowersupplyis1-phase220VAC.4.6开关柜的防护等级包括观察窗、通风窗、排风口在内不低于IP30。4.6Theprotectionleveloftheswitchgearincludingtheobservationwindow,theventilationwindowandtheairexitshouldnotbelessthanIP30.4.7绝缘器件的绝缘强度和单纯以空气作为绝缘介质时各导体之间和对地净距必须符合DL404-91(户内交流高压开关柜订货技术条件)的要求。4.7Thei