A New Aluminum Alloy Cable Cleat Design and Development a Smart Cable Protection System

Abstract

One of the most important materials of electrical power systems is the power cable. Power cables during a short circuit and in normal operation carry high currents. Especially short-circuit currents apply electromechanical forces to the power cables. So they must be fixed along the cable routing. For fixing, cable cleats are used in many different types. The cable cleat designed in this study is different from the cable cleat previously developed for reducing the influence of electromagnetic forces. A new connection is also proposed in this work for measuring short-circuits fault currents. In addition to the mechanical forces that occur during short circuit faults, in the areas where cable cleats are regional warming occurs. In this study a new design was developed in order to prevent this situation. Operators always require that at least thermal losses. This new design, which minimizes thermal losses, also fulfills the other requirements of the IEC 61914:2016 standard. In addition this study describes how to calculate the forces between cables in the event of short-circuit, including the relationship between cable cleat spacing and cable spacing. A test assembly is designed for the testing of the cable cleats. The details of the short-circuit test are described. The adequate data is provided to select an appropriate cable cleats and specify to distance between fixing for given cable spacing and short-circuit current. A correctly rated cable cleat, especially properly specified and installed, is capable of withstanding the electromechanical forces in the event of various short circuit faults. Finally, this paper presents new cable cleat design, new protection system, test data, cable cleat standard, and other practice.