第1页共84页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共84页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）第2页共84页第1页共84页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共84页额定工作频率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第3页共84页第2页共84页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第3页共84页额定动稳定电流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第4页共84页第3页共84页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第4页共84页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...
