矿物绝缘油;功能要求、规格及生产

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI:10.1109/ELINSL.2006.1665259

M. Eklund

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引用次数: 13

摘要

论述了变压器油的要求是如何通过不同的规定的物理和化学参数来体现的。脉冲击穿不包括在许多规格中，但ASTMD3487确实有。直流脉冲和非均质间隙的击穿行为与交流击穿强度大不相同。它的设计是为了模拟雷暴期间的闪电脉冲。结果与影响正常击穿试验的污染物无关。用针和钢球作为电极，相距2.5厘米。对于针的负脉冲，发现分解取决于油的精炼程度，芳香族含量越低，值越高。描述了最常见的精炼过程

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Mineral insulating oils; functional requirements, specifications and production

This paper describes how requirements on transformer oil are reflected by different specified physical and chemical parameters of oil. Impulse breakdown is not included in many specifications but ASTMD3487 does have it. Breakdown behaviour with DC impulses and a heterogeneous gap is very different from the AC breakdown strength. It is designed to simulate lightning pulse striking during a thunderstorm. The result is independent of the contaminants influencing normal breakdown test. A needle and steel ball are used as electrodes, at a distance of 2.5 cm. With a negative impulse to the needle, the breakdown has been found to depend on the degree of oil refinement, with lower aromatic content giving a better/higher value. The most common refining processes are described

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Conference Record of the 2006 IEEE International Symposium on Electrical Insulation

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