Dependence of the Contact Resistance on the Design of Stranded Conductors

• Main Authors: Youcef Zeroukhi, Ewa Napieralska-Juszczak, Guillaume Vega, Krzysztof Komeza, Fabrice Morganti, Slawomir Wiak
• Format: Article
• Language: English
• Published: MDPI AG 2014-07-01
• Series: Sensors
• Subjects: stranded conductors; contact resistance; cable design; cable simulation; contact resistance measurement
• Online Access: http://www.mdpi.com/1424-8220/14/8/13925

During the manufacturing process multi-strand conductors are subject to compressive force and rotation moments. The current distribution in the multi-strand conductors is not uniform and is controlled by the transverse resistivity. This is mainly determined by the contact resistance at the strand crossovers and inter-strand contact resistance. The surface layer properties, and in particular the crystalline structure and degree of oxidation, are key parameters in determining the transverse resistivity. The experimental set-ups made it possible to find the dependence of contact resistivity as a function of continuous working stresses and cable design. A study based on measurements and numerical simulation is made to identify the contact resistivity functions.