变压器感应耐压测试仪技术原理及应用(国外英文资料).docVIP

变压器感应耐压测试仪技术原理及应用(国外英文资料) Technical principle and application of transformer inductive withstand voltage tester Abstract: This paper briefly introduced the principle and characteristics of induction voltage transformer tester, and the application scope and application method in detail, finally with examples of 5W transformer power transformer is introduced to determine the small interturn short circuit. Key words: induction withstand voltage; longitudinal insulation; power determination Author: Qingdao Ainuo instrument R D center Jiao Xuezeng Wang Zhiqiang Detection principle of transformer inductive withstand voltage tester Compared with the main insulation of transformer, that is to say, the insulation between winding and winding and between winding and core, the transformer has another important insulation performance - longitudinal insulation. Refers to the longitudinal insulation insulation between different transformer windings with different potential and different parts, mainly including the insulation between the windings and the interlayer between segments, and national standards and International Electrotechnical Commission (IEC) standards in the provisions of the induction voltage test is specially used for testing transformer longitudinal insulation performance test one of the methods. Insulation paint, transformer oil, insulating paper, varnish and insulation glue and so on insulation of transformer longitudinal insulation mainly depends on the winding the enameled wire itself (transformers of different types may contain one or more dielectric insulating dielectric); longitudinal difficult to ensure 100% purity, inevitably mixed with solid impurities, bubbles or water, can also in the production process are subject to different degrees of damage; the highest strength of transformer when working on these defects, but also reduce the breakdown voltage of the insulation medium long term load operation of the temperature rise, causing partial discharge,