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This paper is dedicated to investigate the impulse withstand voltage of single-phase compact distribution line structures of 15kV class. The structures are tested in laboratory with the application of standard lightning impulse waveforms of positive polarity. Three situations are considered: (i) XLPE-covered cables with brand new insulation; (ii) XLPE-covered cables with punctured insulation; (iii)...
This paper investigates the influence of XLPE-covered cables on the impulse withstand voltage of a typical structure used in single-phase compact distribution lines in Brazil. For comparison purposes, two different procedures are adopted for estimating the impulse withstand voltage of this structure under standard positive lightning impulses. One considers a bare cable and the other assumes a XPLE-covered...
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