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Fracture Analysis and Suggestions of Steel Core in Tension Clamp on 220 kV Transmission Line

Tension clamps are common components in overhead transmission lines. It not only has to undertake the function of conducting electricity, but also bear all the tension of the wire. It is necessary to ensure that the tension clamp has sufficient gripping capacity. This is of great significance for the safe stress and reliable power supply of transmission lines.This paper aims at the fracture defect of the steel core in the tension clamp of a 220kV line. Anatomical analysis, component analysis, mechanical property analysis and other tests were carried out. At the same time, the effects of different crimping processes on the crimping quality were compared. The reasons for the fracture of the steel core in the tension clamp are analyzed. Relevant recommended measures are put forward.