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The selection of new compounds for the manufacture of underground power cables, involves a lot of qualification and acceptance testing according to the standards applicable to such cables. All these tests have been performed on samples or complete cable, which implies that the time and production costs of these tests are too large, some having reached up to one year to obtain preliminary results ...
In order to explain the phenomenon of the polymer aged even breakdown under electric stress, the relationship between the space charge and the polymer residual life is studied both in domestic and abroad laboratories. An apparatus that can directly measure the space charge distribution in the polymer insulation materials is developed. Then the space charge distribution in the polymer insulation used...
This article documents the activities and discussions of the ICC discussion group A4D comparing the performance of TRXLPE and XLPE insulation material used in medium voltage underground power cables. It was not possible at the time to use water tree growth tests, carried out according to ASTM 6097-97, to provide a definition of a water tree retardant material. This was due to the relatively small...
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