 Crossing quantities: How to compare electrical strength performances of insulation compounds for power cablesM. Marzinotto, G. Mazzanti and C. Mazzetti Energy, 2009, vol. 34, issue 3, 245-253 Abstract: An innovative theory—derived from the “enlargement law”—about how to compare the breakdown performances of power cable insulation compounds is illustrated and applied herein. This theory enables the selection between two different compounds candidate for the insulation of power cables via dielectric strength tests performed on cable models. In particular, compound performances are investigated vs. cable length looking for the so-called crossing length, i.e. a crossover point between the performances of the two compounds, such that one of the two performs better above this length, and conversely the other below it. The application of this theory consists in a comparison between two EPR compounds, based on lightning impulse breakdown tests realized on mini-cables, and shows that the crossing length depends strongly on cable size and voltage rating. Therefore, the practical selection of the best compound must consider the typical installation lengths of real cables. Keywords: Cable lines; Breakdown voltage; Dielectric strength; Enlargement law; EPR insulation compounds (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:34:y:2009:i:3:p:245-253 DOI: 10.1016/j.energy.2008.07.011 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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