Suspension clamp and ACSR electrical conductor contact conditions

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Journal of Environmental Engineering (New York); (United States)

DOI:https://doi.org/10.1061/(ASCE)0733-9402(1993)119:1(19)· OSTI ID:6439539

Cardou, A; Leblond, A; Cloutier, L ^[1]

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1. Laval Univ., Ste-Foy, Quebec (Canada)

A one-dimensional model is presented for the analysis of contact between a typical suspension clamp and an overhead electrical conductor. Besides span parameters (sag angle, static tensile load), conductor curvature at the last point of contact is shown to depend on clamp profile. Strain measurements are performed on the bottom free surface of a typical commercially available suspension clamp, and of a simpler, yet similar, generic clamp, with a Bersimis ACSR conductor specimen. Various sag angle and tensile load combinations are imposed. Using an inverse method, measurements made on the generic clamp allow, through finite-element method modeling, the calculation of an approximate contact load distribution between clamp and conductor. With the usual assumption of minimum conductor bending stiffness, good agreement is found between experimental and theoretical results. Most notably, an experimentally observed tensile strain zone at the clamp bottom surface is shown to correlate well, both qualitatively and quantitatively, with a calculated localized contact region. Such tensile zone could be used to study contact conditions in other clamp-conductor systems.

• OSTI ID: 6439539
• Journal Information: Journal of Environmental Engineering (New York); (United States), Journal Name: Journal of Environmental Engineering (New York); (United States) Vol. 119:1; ISSN 0733-9372; ISSN JOEEDU
• Country of Publication: United States
• Language: English

Related Subjects

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