负荷开关fzn12

概述summaryfn12-12d/630-50型户内交流高压负荷开关（以下简称fn12-12d负荷开关）是额定电压为12kv，额定频率为50hz的三相高压开关设备，用于分合负荷电流，空载变压器和电缆充电电流，关合短路电流。配装接地开关的负荷开关，可以承受短时电流。fn-12（r）d/100-31.5型高压负荷开关-熔断器组合电器（以下简称fn12-12（r）d组合电器），是在fn7-12d负荷开关与s□laj-12(xrnt□-10)高压限流式熔断器组合在一起的户内高压开关设备。它可以开断直至短路电流的任何电流；负荷开关开断工作电流，熔断器开断短路电流，联合开断工作电流与全短路电流之间的任何电流，同时熔断器通过其碰撞使负荷开关分闸。itisathreephaseh.vswitchequipmentof12kv50hzforbreakingorclosingloadcurrent.no-loadtransformercablechargingcurrentandclosingshort-circuitcurrent.theloadswitchwithearthswitchcanbearshort-circuitcurrent.itismadeupoffn12-12dloadswitchands□laj-12(xrnt□-10)h.vcurrent.jointlybreakinganycurrentbetweenshort-circuitcurrent.meantime.fuseboxmaketheswitchoffofwiththestriker.适用范围applicationfn12-12d/负荷开关fn12-(r)d组合电器主要用三相环网或终端供电的市区配电站和工业用电设备中，作负荷控制和短路保护之用。由于组合电器对变压器等电器设备的保护作用比用断路器更可靠，特别适用于环网，比辐射代单元和箱式变电站。itisusedintheringnetworkcitydistributionandindustrialequipmentof12kvandthree-phaseac50hztocortrolloadandshort-circuit.becausetheswitchwithfuseprotectingtransformeretcmorereliablythancircuitbreaker.itisespecialysuitableforringnetworkcloubleradialdistributionandpackagesubsttion.产品采用标准standarda、gb3804-90《3～65kv交流高压负荷开关》b、gbxxx-xx《交流高压负荷开关-熔断器组合电器》（等效iec420-1990）c、gb1995-89《交流高压隔离开关和接地开关》a、gb3804-90《3～65kvach.vloadswitch》b、gbxxx-xx《ach.vloadswitchwithfusebox》（thesameiec420-1990）c、gb1995-89《ach.visolateswitchandearthswitch》正常工作环境normalserviecconditiona、周围空气温度不高于+40oc不低于-25oc；b、海拔不超过1000米；c、相对湿度，月平均值不大于90%，日平均值不大于95%；d、周围空气应不受腐蚀性、可燃性气体及水蒸汽体等明显污染；e、无经常性的剧烈运动；f、耐污秽等级：ⅱ级。如使用条件超过上述规定，由用户与制造厂商协商确定。a、theambientairtemperatrue:max:+40oc.min:-25oc.b、thealtitude&le；1000m.c、therelatirehumidityofairdailyaverage&le；95%.monthlyaverage&le；90%d、theambientairshouldnotbeobviouslypollutedbycorrosivityortheflammabilitygasandgeam.etc.e、withoutfrequentshake.f、enviromentdegree:gradeⅱ.ifrequirementsarenotmentioedabove,userscanfixthemwiththemanufacturer.型号含义typeandmeaning机构形式：s手操、d电动额定动稳定电流（ka）额定电流接地开关额定电压（kv）设计序号户内交流高压负荷开关mechanismmode:sbyhand.dbymotor.rateddynamicstailitycurrentratedcurrentearthswitchratedvoltagedesignednumberindoorach.vloadswitch机构形式：s手操、d电动额定短路开断电流（ka）额定电流接地开关带熔断器额定电压（kv）设计序号户内高压负荷开关-熔断器组合电器mechanismpattern:shandleoperate.dbymotor.rateddynamicstailitycurrentratedcurrentearthswitchwitchswitchratedvoltagedesignednumberindoorh.vloadswitchwithfusebox技术参数和性能见下表techniaclparameterandperformances(pleaseseethetable)序号number名称name单位unitfn12-12d/630fn12-12d(r)d/1001额定电压ratedvoltagekv122额定频率ratedfrequencyhz503额定电流ratedcurrenta6301004雷电冲击耐受电压lightingimpulseresistingvoltagekv对地及相间75、隔离断85toground.interphase75isolationbreak8551min工频耐受电压1minpowerfrequencywithstandvoltagekv对地及相间42、隔离断48toground.interphase42isolationbreak486额定热稳定电流ratedheat-stabilitycurrentka20(4s)7额定动稳定电流ratedmachine-stabilitycurrentka508额定关合电流ratedclosingcurrent(peak)ka50509额定短路开断电流（予期值）ratedshort-circuitbreakingcurrent(prospectivevalue)ka31.510临界开断电流时最大i2·；tmax.criticalbreakingcurrenti2·；ta2s按熔断器特征曲线fuseboxcharacterisiticcurve11最小开断电流min.breakingcurrentka按熔断器特征曲线fuseboxcharacterisiticcurve12额定转移电流ratedtransfercurrentka1.513最大开断电流(参考值)max.breakingcurrent(referencevalue)ka1.814开断空载变压器容量brakingno-loadtransformercapcitykva125015额定电缆充电电流ratedcablechargingcurrenta1016额定有功负载电流开断次数ratedpowerloadcurrentbreakingtimes次time&ge；10017额定有功负载电流开关分闸时间switch-offtimeofratedpowerloadcurrentswitchon-and-offs＞0.0618接地开关热稳定电流ratedtransfercurrentka20(2s)20(2s)19接地开关热稳定电流(峰值)ratedtransfercurrentka505020电动机操作电源电压motoroperatingpowervaltagev交直流100、220、pay110、220directcurrent机械特征参数mechanicalcharacteristicparameter型号nunber项目name单位unitfn12-12d/630fn12-120d(r)d/1001动触头总行程machinecontactqeneraltravelmm200±；8-22相间中间距离（机构储能）interphasedistance(beforemechansimstoreenergy)mm210±；33动触头超行程dynamiccontactultratravelmm40±；24辅助触头开距auxiliarycontactdistancemm40±；25三相分、合闸同期性three-phaseswitchon-and-offsynchroneitym/s＜36刚分速度switch-offspeedm/s＞2.8＞2.87刚合速度switch-onspeedm/s＞3.88金属活门对导电筒距离distancebetweenmetalvalueandconductingpipemm＞1259接地开关断口距离earthswitchfracturedistancemm＞15010主回电电阻main.loopresistance&mu；&omega；＜120＜30011最大操作力矩max.opertaingmomentnm＜160注：1、测量辅助触头开距，可测量静弧头对导电筒喷口端面加厚24mm；2、测量fn12-12(r)d组合电器的主回路电阻时，熔断器用阻抗可忽略不计的导电棒代替。note:1.whenmeasuringauxiliarycontactdistance.add24mmstaticcontacttotheconductingpipe.2.whenmeasuringfn12-12(r)dmainloopresistance,thefuseboxcanbereplacedbytheconductingbarignoringitsresistance.结构示意和外形、安装尺寸图structure、appearanceandinstallationdiagramfn12-12(r)d/100-31.5型户内交流高压负荷开关fn12-12(r)d/100-31.5typeindoorach.vloadswitchfn12-12d/630-50型交流高压负荷开关-熔断器组合电器fn12-12d/630-50typeach.vloadswitchwithfusebox电动操作机构开孔尺寸图thesizediagramofmotoroperatingmechanism