概述 無刷無環(huán)運行器是一種克服了繞線式異步電動機裝有滑環(huán)、碳刷和復雜的起動裝置等缺點,而保留了繞線電機起動電流小,起動轉矩大等優(yōu)點的起動設備。凡原來采用電阻起動器、電抗器、頻敏變阻器、液體變阻起動器、軟起動器起動的JR、JZR、YR、YZR三相繞線轉子交流異步電動機(變速、裝有進相機的除外)均可選用 無刷無環(huán)運行器 來更新?lián)Q代。SUMMARIZENobrushNoringstarteristoconquerthedefaultoftherings、carbonbrush、andcomplexstartingsetsonwingingasynchronousmotor,andisanequipmenttoreservetheadvantagethatsmallcurrentandlargetorqueofwingingmotor.JR、JZR、YR、YZRthreephasewingingstatoracasynchronousmotorwhousethestarterofresistance、reactor、adjustablerheostatfrequencysensitiverheostat、liquildresistancestarter、soft-starterallcanchoose NoBrushandnoringtostead. 產(chǎn)品優(yōu)點無刷無環(huán)運行器把傳統(tǒng)的、繁瑣的、多觸點元件組成的起動裝置去掉,采用無刷無環(huán)運行,操作簡單,安裝拆卸方便,可大大減少維修費用,其優(yōu)點是:去掉滑環(huán)、碳刷、刷盒、刷盒支架、短路環(huán)及二次回路系統(tǒng)中的頻敏變阻器、交流接觸器、時間繼電器等元件,并可保持電機原有的運行特性。ADVANTAGEOFPRODUCTIONNobrushNoringstarterremovethetraditional、complicated、multiconductioncomponentstartingequipment.itiseasytooperateandinstall,lessrepairingexpense.theadvantageis:tokeeptheoriginaloperationwithoutrings、carbonbrush、brushbox、brushboxshell、shortcircuitringandajustablerheostatfrequencysensitiverheostatonsecondaryloopsystemACconnectorandtimerelay.主要技術參數(shù)額定頻率:50Hz額定電壓:380V配用電機功率:15-125KW a.輕載:0.6Me M 0.8Me、2.5Ie b.重載:1.6Me M 2.0Me、3.0IeMAINTECHNICALPARAMETERRatedFrequency:50HzRatedVoltege:380VAdaptMotorPower:15-125KWa.lightload:0.6Me M 0.8Me、2.5Ieb.heavyload:1.6Me M 2.0Me、3.0Ie性能特點無刷無環(huán)運行器的工作原理是利用電動機在起動過程中,轉子電流頻率fz隨轉子轉速升高而降低的關系fz=f1 S,當轉子轉速由0上升到額定轉速Ne時,轉子電流頻率則從50Hz平滑地降至1~3Hz。起動器阻抗Zp=rp+jxp,其中鐵損rp的大小與頻率的平方成正比,隨著fz的降低,rp也隨之下降,電抗Xp= LP,同理,Xp也減少。當起動結束后,sf1很小,Zp則降到很小甚至近似于零,因此電動機在起動時,既能限制起動電流,也能提高功率因數(shù)和增大起動轉矩,是一種理想的起動裝置。PERFORMANCECHARACTERISTICTheprincipleofstarteristousethecurrentfrequencyofstatorfz reducewhenstatorspeedrisingfz=f1xS,whenthespeedofstatorrise0toratedspeedne,currentfrequencyofstatorfrom50hzdownto1-3hz.ofstarterzp=rp+jxp,thesizeofironlossrpisproportionaltofrequencysquare.withthereductionoffz,rpwillgodown,reactancexp= Lp,xpwillreduce.whenthestartingfinish,sf1isverysmall,zpwillgodowntonearlyzero,sowhenstarting,itnotonlylimitthecurrent,butalsoimprovepowerfactorandtorque,whichisanidealstartingequipment.安裝與接線與QXQ無刷自控電機軟起動器方式一致。此電動機轉子出頭線有兩種:即50KW以上的電動機轉子有6個出頭線(A-A、B-B、C-C),50KW以下的電動機轉子只有3個出頭線,本公司生產(chǎn)的無刷無環(huán)運行器也按功率大小,設有6個或3個接線柱。起動器裝配完成后,將轉子的出線接在起動器接線柱對應位置(對于有六根出線的電動機,應將同一相的兩根導線,對稱地接在起動器的兩個接線柱上)即可,具體接線如下圖所示。INSTALLATIONANDCONNECTIONItisthesameasWZRNoBrushself-controlledmotorsoftstarter.Thereis2kindofout-headlineofmotorstator:6out-headlineofmorethan50KWmotorstator(A-A、B-B、C-C).3out-headlineoflessthan50kwofstator.thestarteralsobedesigned6-3bindingpostaccordingtopower.afterfinishingtheinstallation,plsconnectthelinetocorresponding locationofbindingpost. 結構尺寸STRUCTUREANDSIZE