A series of webinars on power cables, with focus on conductors.

Date: August 26, 2015
Time: 15h00-16h00 Central European Time (check your local time)

In this presentation, the results of two studies are presented. The first study concerns a survey of technical properties of copper versus aluminium, including failure mechanisms in which the conductor plays a major part,  followed by a decision model on what criteria the selection process of the conductor material happens in practice. The second study deals with a complete Life Cycle Cost Analysis, in which the total life-cycle costs are being calculated over the life span of the cable with both CAPEX and OPEX. This has resulted in the conclusion that both materials  can be considered to give equivalent solutions from a life cycle costing perspective. These  studies demonstrate a superiority of copper while costs are similar. Although there is a difference in initial costs, such initial conductor and cable costs represent only a negligible (a few percentage) portion of the total life cycle cost.

Electrical connections are a necessary part of all wiring systems. If not properly selected and installed connectors can be the weakest point in a wiring system. The webinar will provide a review of contact theory. Two electrical tests comparing common types of copper and aluminum alloy connectors will be discussed, Including procedures, methodology, results and conclusions. The first test uses salt fog and heat cycling, combined with electric current bursts. The second test investigates conductor wire-brushing, application of contact lubricant, and bolt torque on mechanical connectors.

Information will be given on the method of installation of cables in ducts and tunnels, which methods get presently increased attention in urban areas. In particular attention will be paid to the conductor material of cables, copper or aluminium, and if there is a preferred choice to recommend based on the typical material properties and related experience.

Lead used to be a popular material to protect the cable against water ingress and to provide a number of vital electrical functions. However lead is heavy, expensive and last but not least is becoming increasingly controversial for environmental reasons. In this presentation attention will be paid to alternatives for the conventional lead sheath: the so called laminated coverings aluminium and copper laminates and their mutual pros and cons.

Copper is the world's preferred conductor materials due to its unique combination of properties. Yet in LV and MV networks, aluminium is predominantly used. To understand this apparent paradox, ECI has requested KEMA (now DNV-GL) to investigate how utilities purchase aluminium or copper cable products. The findings of this investigation will be presented in an interactive webinars presented by Wim Boone from DNV-GL.

Copper or aluminium, that's the question. In this webinar, the typical differences between the 2 conductor materials will be presented, leading to their pros and cons for wire and cable applications. The findings of a survey among utilities will be presented about their decision model how to select copper or aluminium, followed by conclusions.