油流继电器手册

3Application 应用TheURF25/10monitoringrelayisanalarmdeviceforoil-insulatedhigh-dutytappingswitchesoftransformerfromdamageasmightbecausedbyfailureofthetappingswitchsystemortheapplicationofexcessivecurrents(strongarc)duetoatransformerdefect.压器本体故障引发短路电流〔大电弧〕时，可起到保护分接开关的作用。Onresponsethemonitoringrelaywillgenerateacontinuouspulseoperatingthecircuitbreakerofthetransformertobeprotectedanddisconnectingthelatterfromthesourceofsupply.Observingtheinstructionsoftheplantoperator,thetransformercanberestartedonlyafteroperationofthetestandresetbutton.损坏。依据生产商操作手册的说明，仅当操作油流继电器上的试验和复位按钮后，变压器才能合闸连续运行。Themonitoringrelayisavailablewithsingleanddouble-contactcircuitsystem.Onresponseofthebaffleplateduetoanincreasedoilflow,thedouble-contactcircuitprovidestwosignals,henceimprovingoperationalsafetyoftheequipment.油流继电器可以供给单触点和双触点两种形式。当油流继电器内动作挡板由于油流作用动作时，双触点电路可供给两组独立的信号，这样可以进一步提高设备的安全性。Construction构造Themonitoringrelayconsistsofthefollowingsub-assemblies:油流继电器由以下部件组成：Casingassembly 机壳Coverassembly 机盖Switchmechanism信号机构Casingassembly 机壳Thecasingconsistsofweatherprooflightmetalcasting.Tochecktheswitchsystemforproperfunction,thecasingisprovidedwithinspectionglassesarrangedoppositeeachother.Onrequest,theinspectionglassescanbeprovidedwithhingedlids.工作状况。如需要的话，观看窗处可另加可旋转的保护盖。Coverassembly 机盖Thecoverconsistsofaweatherprooflightmetalcasting.Theconnectionbox,thetestandresetbuttonandatechnologicalbleederscrewarearrangedabovethecover.机盖由防风雨的轻金属材料制成。上面安装有接线盒，试验和复位按钮和放油用的螺栓。Inadditiontotheearthconnection,theconnectionboxaccommodatestheelectricbushingsinthefloor.Theconnectionboxisclosedbyahingedcapsothatitisaccidental-shocksafeandnodirtgetinsidethebox.灰尘进入内部。TheconnectingcablecanbeinsertedoptionallythrougheitherPG16screwedconduit.Thetestandresetbuttoniscoveredbyacapnut.信号连接电缆可以从任一个PG16螺纹管内接入。试验和复位按钮上有一个螺帽保护。Switchmechanism信号机构Theswitchmechanismconsistsofthefollowingmajorcomponents:信号机构由以下部件构成：Frameassupportelement支撑框架Functionalelement,switchsystem动作单元，开关系统Mechanicaltestingequipmentforfunctionaltesting测试动作状况的机械试验装置Theswitchingsystemconsistsofthefollowingcomponents:开关系统由以下部件构成：Baffleplate挡板Switchingmagnet动作磁铁Magneticswitch磁性开关Thebaffleplateisretainedinitsnormalandresponsepositionsbypermanentmagnets.Viaalink the switching magnet is firmly connected with the baffle plate and initiates thecontact-makingprocessofthemagneticswitchatacertainoilflow.挡板上。当油流速度超过整定值后，动作磁铁就会带动磁性开关的触点吸合。Modeofoperation 操作方式Iftheoilflowfromthetappingswitchtotheexpansiontankisexcessiveorinadmissible,themonitoringrelaywillbetripped.Theoilflowactsonthebaffleplateandwhentheresponsevaluesetisexceeded,theplatewillbeoperated.Then,theshutoffsignalwillbetripped.到动作位置，然后油流继电器将发跳闸信号给主断路器。Installation 安装Theinstallationandoperatinginstructionssuppliedwiththemonitoringrelaydescribeindetailtheinstallationandelectricalconnectionofthemonitoringrelay.油流继电器包装内有具体的安装操作指南。有关于安装和电气连接请参考此指南。Technicaldata 技术数据Parameter参数Value/Specification/规格Notes说明Ratedvoltage额定电压230VA.C.230VD.C.12Vto250V12Vto250VRatedcurrent额定电流2AA.C.0.05Ato2A2AD.C.0.05Ato2AInsulationvoltage 压Capacity容量2023VA.C.Casingcontact短路Ambienttemperature-45°Cto+55°COthers available onParameter参数环境温度Insulatingliquid绝缘油Type类型Temperature温度Viscosity粘滞度

Value/Specification/规格Transformeroil变压器油1mm2/secto1100mm2/sec

Notes说明request承接特别要求Others available request承接特别要求Others available request承接特别要求Others available request承接特别要求Responsevaluesofthe0.9m/secbaffleplate挡板整定值1.0m/sec1.2m/sec1.5m/sec

2.0m/sec2.5m/sec3.0m/sec4.0m/sec

Others available request承接特别要求Responsetimeofthebaffleplate挡板动作时间Nominal installationposition安装位置Typeofprotection

<0.1sec2%risingtowardstheexpansiontank 2%to4%2%往油枕方向上翘Others available on保护等级

IP44

request承接特别要求Climaticsuitability适应环境Types 型号

Suitableforwarmandhumidaswell Others available asextremelycoldopenairclimates request适用于各类炎热、潮湿和严寒的户外承接特别要求环境Themonitoringrelayismanufacturedthreebasictypeswithidenticalexternaldimensions.Thefollowingtypesareavailable:此油流继电器有三种根本型号，尺寸完全一样。分别为：URF25/10-1 Single-contactedcircuit单触点(Contacts:1NOcontact,1NCcontactor1change-overcontact)〔触点：1常开，1常闭，1，转换触点〕URF25/10-2 Double-contactcircuit双触点(Contacts:2NOcontacts,