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％。
Beijing rema power supply technology co., LTD., since 2006 engaged in the valve control type sealed lead acid battery sales, is China's earliest start selling one of maintenance-free battery traders. With more than ten years of sales, customers all over the country more than 1000 (with detailed client list and purchase contract for reference), the experience is very rich. After many years of accumulation and development, now our company has become a collection of scientific research, development, production, sales in the integration of all kinds of professional battery manufacturers. Company technical strength and financial strength is very strong, h***e a large number of engineering and technical personnel, to ensure that every customer would be able to get the high quality service. Company is dedicated to provide a more battery trading platform for the fair, dedicated to provide users with cheap and fine original products, dedicated to reshape China battery the normal order of market, is committed to fight against fake and inferior, profiteering and vicious competition. Battery business network goal is to build China's largest trading platform, to the user when buying a battery to the quality, price, guarantee of confidence. Company is a famous Chinese backup battery (telecom, electric power, UPS), power battery (electric vehicles, forklifts, electric machinery, traction), starting batteries (car battery and oil machine starting batteries), deep cycle solar battery, alkaline battery and professional distribution company, specializes in distribution of various kinds of imported high-quality battery products joint venture. Because the company has for many years engaged in the import and export trade, import and export processes are very familiar with battery, the company from production manufacturer directly with goods, the price advantage is ***ious. Company comprehensive intervention, industrial batteries, with the most preferential price, the best service, breakthrough brand restricti***, for you to provide quality comprehensive import joint industrial battery products, and provide complete varieties of industrial battery testing instruments and meters, and complete industrial battery detection scheme, eventually eliminate your fear of industrial batteries, for you to find the optimal configuration of industrial battery soluti***. Really real.
The company sells the famous imported industrial battery products are American GNB batteries, Germany sunshine, the hawk, the United States DEKA, Italy, the United States C&D battery is special battery, the Swiss love kang battery, Germany pines. Joint sino-italian joint venture insurance products (bosfa) battery, shenyang shenyang panasonic battery joint venture with Japan, shunde's joint venture with Japan yuasa (also to sell Taiwan soup shallow and Japan original soup shallow), Shanghai hercules battery joint venture with the United States and sino-italian joint venture SPI batteries.
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。