Dry transformer
专利汇可以提供Dry transformer专利检索，专利查询，专利分析的服务。并且PURPOSE:To obtain the titled device having a high creeping withstand voltage by reducing the creeping dimension by a method wherein the electric field of the part of adhesion of an insulator having a higher specific dielectric constant than air is relaxed by enveloping the peripheral surface of coil end on the high voltage side with an insulator having a high dielectric constant. CONSTITUTION:Windings of electric wires 9 coated 10 by insulation are laminated without spacers and then impregnated with H-type varnish. Rubbery substance is buried between an insulation barrier 21 and the coats 10, between winding end surfaces and an insulation washer 24, and between the barrier 21 and a high voltage collar 23, and an outer insulation layer 25 is produced by winding with an insulation tape, including the collar 23. This high voltage coil is supported at four points per coil phase with an insulator 22 in common to a low voltage coil 13, and the barrier 21 is coated in contact with the inner peripheral surface of the color 23. With this construction, even when the penetration of impulses causes ionization in the air gaps between the high and low voltage coils, the insulator such as the barrier adhered to the inner and outer peripheries of the high voltage coil blocks insulation breakdown, and the insulators at the upper and lower ends of the high voltage coil relax the voltage at the coil end, thus enabling a large reduction in the coil creeping length la; accordingly, coil supporting can be simplified, resulting in the improvement of the reliability.，下面是Dry transformer专利的具体信息内容。
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