{"title":"Calculation of ampacities and sizing of line and neutral conductors in the presence of harmonics","authors":"A. Hiranandani","doi":"10.1109/ICPS.1995.526989","DOIUrl":null,"url":null,"abstract":"Today nonlinear loads are becoming a bigger part of the electrical\nload in industrial and commercial power systems. Nonlinear loads\ngenerate harmonics in line currents resulting in additional conductor\nheating. This heating results in a higher temperature rise of the cable\nwhich can exceed the rated temperature of the cable if it is not sized\nto carry harmonic currents. Existing ampacity tables by the NEC or IEEE\nare based on heating generated by sinusoidal currents. The presence of\nnonsinusoidal harmonic currents in the cable requires derating of the\ncable. This paper has developed an equation for calculating the ampacity\nfor line and neutral conductors in the presence of harmonics","PeriodicalId":138670,"journal":{"name":"Proceedings of 1995 Industrial and Commercial Power Systems Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1995-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 1995 Industrial and Commercial Power Systems Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICPS.1995.526989","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
Today nonlinear loads are becoming a bigger part of the electrical
load in industrial and commercial power systems. Nonlinear loads
generate harmonics in line currents resulting in additional conductor
heating. This heating results in a higher temperature rise of the cable
which can exceed the rated temperature of the cable if it is not sized
to carry harmonic currents. Existing ampacity tables by the NEC or IEEE
are based on heating generated by sinusoidal currents. The presence of
nonsinusoidal harmonic currents in the cable requires derating of the
cable. This paper has developed an equation for calculating the ampacity
for line and neutral conductors in the presence of harmonics
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