EFFEKTA蓄电池BTL12-90（代理）大量批发供应A、通过观察变压器的外貌来检查其是否有明显异常现象。如线圈引线是否断裂，脱焊，绝缘材料是否有烧焦痕迹，铁心紧固螺杆是否有松动，硅钢片有无锈蚀，绕组线圈是否有外露等。B、绝缘性测试。用万用表R×10k挡分别测量铁心与初级，初级与各次级、铁心与各次级、静电屏蔽层与衩次级、次级各绕组间的电阻值，万用表指针均应指在无穷大位置不动。否则，说明变压器绝缘性能不良。C、线圈通断的检测。将万用表置于R×1挡，测试中，若某个绕组的电阻值为无穷大，则说明此绕组有断路性故障。D、判别初、次级线圈。电源变压器初级引脚和次级引脚一般都是分别从两侧引出的，并且初级绕组多标有220V字样，次级绕组则标出额定电压值，如15V、24V、35V等。再根据这些标记进行识别。E、空载电流的检测。（1）直接测量法。将次级所有绕组全部开路，把万用表置于交流电流挡（500mA，串入初级绕组。当初级绕组的插头插入220V交流市电时，万用表所指示的便是空载电流值。此值不应大于变压器满载电流的10％～20％。一般常见电子设备电源变压器的正常空载电流应在100mA左右。如果超出太多，则说明变压器有短路性故障。（2）间接测量法。在变压器的初级绕组中串联一个10/5W的电阻，次级仍全部空载。把万用表拨至交流电压挡。加电后，用两表笔测出电阻R两端的电压降U，然后用欧姆定律算出空载电流I空，即I空=U/R.F、空载电压的检测。将电源变压器的初级接220V市电，用万用表交流电压接依次测出各绕组的空载电压值（U21、U22、U23、U24）应符合要求值，允许误差范围一般为：高压绕组≤&plu***n;10％，低压绕组≤&plu***n;5％，带中心抽头的两组对称绕组的电压差应≤&plu***n;2％。Beijingremapowersupplytechnologyco.,LTD.,since2006engagedinthevalvecontroltypesealedleadacidbatterysales,isChina'searlieststartsellingoneofmaintenance-freebatterytraders.Withmorethantenyearsofsales,customersalloverthecountrymorethan1000(withdetailedclientlistandpurchasecontractforreference),theexperienceisveryrich.Aftermanyyearsofaccumulationanddevelopment,nowourcompanyhasbecomeacollectionofscientificresearch,development,production,salesintheintegrationofallkindsofprofessionalbatterymanufacturers.Companytechnicalstrengthandfinancialstrengthisverystrong,h***ealargenumberofengineeringandtechnicalpersonnel,toensurethateverycustomerwouldbeabletogetthehighqualityservice.Companyisdedicatedtoprovideamorebatterytradingplatformforthefair,dedicatedtoprovideuserswithcheapandfineoriginalproducts,dedicatedtoreshapeChinabatterythenormalorderofmarket,iscommittedtofightagainstfakeandinferior,profiteeringandviciouscompetition.BatterybusinessnetworkgoalistobuildChina'slargesttradingplatform,totheuserwhenbuyingabatterytothequality,price,guaranteeofconfidence.CompanyisafamousChinesebackupbattery(telecom,electricpower,UPS),powerbattery(electricvehicles,forklifts,electricmachinery,traction),startingbatteries(carbatteryandoilmachinestartingbatteries),deepcyclesolarbattery,alkalinebatteryandprofessionaldistributioncompany,specializesindistributionofvariouskindsofimportedhigh-qualitybatteryproductsjointventure.Becausethecompanyhasformanyyearsengagedintheimportandexporttrade,importandexportprocessesareveryfamiliarwithbattery,thecompanyfromproductionmanufacturerdirectlywithgoods,thepriceadvantageis***ious.Companycomprehensiveintervention,industrialbatteries,withthemostpreferentialprice,thebestservice,breakthroughbrandrestricti***,foryoutoprovidequalitycomprehensiveimportjointindustrialbatteryproducts,andprovidecompletevarietiesofindustrialbatterytestinginstrumentsandmeters,andcompleteindustrialbatterydetectionscheme,eventuallyeliminateyourfearofindustrialbatteries,foryoutofindtheoptimalconfigurationofindustrialbatterysoluti***.Reallyreal.ThecompanysellsthefamousimportedindustrialbatteryproductsareAmericanGNBbatteries,Germanysunshine,thehawk,theUnitedStatesDEKA,Italy,theUnitedStatesC&Dbatteryisspecialbattery,theSwisslovekangbattery,Germanypines.Jointsino-italianjointventureinsuranceproducts(bosfa)battery,shenyangshenyangpanasonicbatteryjointventurewithJapan,shunde'sjointventurewithJapanyuasa(alsotosellTaiwansoupshallowandJapanoriginalsoupshallow),ShanghaiherculesbatteryjointventurewiththeUnitedStatesandsino-italianjointventureSPIbatteries.A、通过观察变压器的外貌来检查其是否有明显异常现象。如线圈引线是否断裂，脱焊，绝缘材料是否有烧焦痕迹，铁心紧固螺杆是否有松动，硅钢片有无锈蚀，绕组线圈是否有外露等。B、绝缘性测试。用万用表R×10k挡分别测量铁心与初级，初级与各次级、铁心与各次级、静电屏蔽层与衩次级、次级各绕组间的电阻值，万用表指针均应指在无穷大位置不动。否则，说明变压器绝缘性能不良。C、线圈通断的检测。将万用表置于R×1挡，测试中，若某个绕组的电阻值为无穷大，则说明此绕组有断路性故障。D、判别初、次级线圈。电源变压器初级引脚和次级引脚一般都是分别从两侧引出的，并且初级绕组多标有220V字样，次级绕组则标出额定电压值，如15V、24V、35V等。再根据这些标记进行识别。)