TY - CONF A1 - Kiewitt, W. A1 - Bardl, Richard A1 - Kühnel, C. A1 - Loudon, D. A1 - Stengel, D. A1 - Wunkte, M. T1 - Comparative study of the long-term reliability of HTLS conductor systems T2 - CIGRE 2018 N2 - In recent years, several high temperature low sag conductors (HTLS) have been developed and are now commercially available. Very few utilities have long-term experience with all the technologies. Moreover, most of the operational experience is at low temperatures. An independent testing program at maximum operational temperatures comparing most of the available technologies would provide useful guidance to utilities considering using such conductors. This paper describes the approach and results of an international research project assessing the long-term reliability of a wide range of commercially available high temperature conductor systems. Each system was exposed to 4,400 hours of simultaneous mechanical and electrical stresses. A set of standard mechanical and electrical tests were carried out to determine any changes. A conventional ACSR conductor was also tested and provided a validation that the testing program was realistic. The majority of the conductor systems performed satisfactorily. However the ACSS system joint resistance and the grease on the TACSR performed poorly. T2 - CIGRE Sesstion 2018 CY - Paris, France DA - 26.08.2018 KW - HTLS KW - Conductor KW - Freileitung PY - 2018 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/46028 AN - OPUS4-46028 SP - B2-204,1 EP - 10 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany