FN7-12概述SummaryFN7-12DR型交流高压负荷开关（以下简称负荷开关）是一种新型产气式户内高压负荷开关，适用于交流50HZ，额定电压12KV的三相交流电力系统中，作为开断负荷电流及关合短路电流之用。FN7(C)-12型系列高压负荷及熔断器组合电器是在FN7-12系列高压负荷开关的基础上，增加侧面操作机构、使得安装更加简捷方便，能够满足广大用户的不同要求。FN7-12DRisusedinthree-phaseACpowernetworkofAC50Hz、ratedvoltage12KVforbreakingloadcurrentandcontrollingshort-circuitcurrent.FN7(C)-12typeH.VloadswitchandfuseboxisbasiedontheFN7-12seriesH.Vloadswitch.withoperatingmechani***.Maketheinstallationmoresimpler.Canmeetordersneeds.型号含义Typeandmeaning额定电流（400,630A）电动分闸装置（有：F,无：空）撞击熔断器（有：A,无：空）熔断器负荷开关与接地开关联锁装置（有：L,无：空）接地开关位置（进线端：S，出线端：X）接地开关额定电压（KV）设计序号户内负荷开关RatedcurrentOffdevicebymotor(with:Fwithout:blank)Strikingfusebox(with:Fwithout:blank)fuseboxInterlockgearbetweenloadswitchandearthswitch(with:L,without:blank)Earthswitchposition(wire-inend:S,wire-outend:X)EarthswitchRatedvoltageDesignednumberIndoorloadswitch正常工作环境NormalServiecCondition1、周围空气温度不高于+40oC不低于-25oC；2、海拔不超过1000米；3、相对湿度，日平均值不大于95%，月平均值不大于90%；4、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；5、无经常性的剧烈运动；1、Thealtitudedoesnotexceed1000m.2、Theambientairtemperatrue:Max:+40oC.Min:-25oC.3、TherelatirehumidityofairDaily***erage≤95%.Monthly***erage≤90%4、Theambientairshouldnotbe***iouslypollutedbycorrosivityortheflammabilitygassteam.Etc.5、Theworkingsituationwithoutfrequentviolent.概述Summary类别Classification全型号FulltypeDS接地开关在线端Earthswitchatthewire-inendDK接地开关在线端Earthswitchatthewire-inendL联锁装置InterlockdeviceR熔断器FuseboxRA撞击式熔断器StringfuseboxF电动分闸装置Offdevicebymotor无脱扣器WithouttripperFN7-12——————FN7-12DSL△—△———FN7-12DXL—△△———FN7-12R———△——FN7-12DSLR△—△△——FN7-12DXLR—△△△——带撞击脱扣器WithstrikingtripperFN7-12RAF————△△FN7-12DSLRAF△—△—△△FN7-12DXLRAF—△△—△△额定参数Specifiedparameter额定电压(KV)Ratedvoltage***高电压（KV）Max.voltage额定电流（A）Ratedcurrent1min工频耐压（KV）1minpowerfrequencywithstandvoltage4S热稳定电流(有效值)(KA)4Sheat-stablingcurrent(value)动稳定电流(峰值)(KA)Machinestablingcurrent(peak)短路关合电流(KA)Short-circuitcontrollingcurrent额定开断电流（A）Ratedswitch-offcurrent额定转移电流（A）Ratedtransfercurrent121240042/4812.531.531.5400100063042/482050506301000熔断器额定参数Ratedparameteroffusebox型号Ratedvoltage额定电压（KV）Ratedcurrent额定电流（A）Ratedswitch-offcurrent熔体的额定电流（A）FusebodyratedcurrentSDLA*J12406.3,10,16,20,25,31.5,40SFLA*J1210050,63,71,80,100SKLA*J12125125外形及安装图Appearanceinstallationdiagram图1、无脱扣器"线路"负荷开关Diagram1.Loadswitchwithouttripper"line"图2、无脱扣器"变压器保护"负荷开关Diagram2.Loadswitchtripper"transformerprotection"外型及安装图Appearanceinstallationdlagram图3、脱扣器撞击负荷开关Diagram3.Loadswitchwithtripperstriker图4、CS6操作机构安装示意图Diagram4.InstallationdiagramofCS6operatingmechani***FN7(C)-12高压负荷开关FN7(C)-12H.V.LoadSwitchFN7(C)-12高压负荷开关与熔断器组合电器FN7(C)-12H.V.LoadSwitchwithFuseandwithoutfuse)