Kengo Kawahara

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Several kinds of insulation systems, which were developed for high voltage coil insulation for motors and generators, are examined for insulation damage caused by mechanical stresses. Tests have been carried out on electrical properties under bending stress, i. e. the critical deformation characteristics which are defined as the maximum deformations able to(More)
We have found that HCFC225s (HCFC225ca: 3,3-dichloro-1,1,1,2,2-pentafluoropropane, HCFC225cb: 1,3-dichloro-1,1,2,2,3-pentafluoropropane) are superior mobile phases for size exclusion chromatography (SEC). As alternatives of CFC113, they have been shown to possess a number of excellent properties, such as low flammability, low viscosity, low cost, high(More)
This paper discusses the effects of temperature on the electrical breakdown voltage when water trees are present, as well as the characteristics of XLPE containing only microvoids filled with water. Research indicates that there are two regions in which the effects of temperature may be seen in the presence of water trees, one being the range from 20(More)
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