Analysis of Corrosion Conditions of In-service ACSR

In order to analyze the corrosion conditions of in-service aluminum conductor steel reinforced (ACSR), the atmospheric corrosion of its components in typical climate was studied by macroscopic and microscopic methods. According to its operating environment, the corrosion causes were also analyzed. The results showed that the corrosion of the outer aluminum stranded wires was more serious than that of others. And partial corrosion pits were found on the outer layers of aluminum stranded wires. No obvious corrosion occured on the steel core matrix. Additionally, corrosion products reduced the corrosion rate of aluminum stranded wire but accelerated the corrosion of the steel core. Through this research, more attention should be paid to monitor the outer aluminum stranded wires.