Evaluation of high-temperature behavior of Zn and ZnAl coatings on core wires and strands for ACSR, ACSS, and alike overhead power conductors

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For Aluminum Conductor Steel Supported designs with average working temperatures of 80ยฐC, the drive to increase a conductorโ€™s current carrying capacity by enabling it to operate at higher temperatures results in emergency peaks up to 250ยฐC. Galvanized (zinc) coatings are generally limited to a maximum service temperature for extended times of 180-200ยฐC. This paper describes how Bezinalยฎ ZnAl coatings resist to temperatures as high as 350ยฐC with no significant negative effects on either coating ductility or salt spray corrosion resistance.

SKU: P05371 Category:

Description

For Aluminum Conductor Steel Supported designs with average working temperatures of 80ยฐC, the drive to increase a conductorโ€™s current carrying capacity by enabling it to operate at higher temperatures results in emergency peaks up to 250ยฐC. Galvanized (zinc) coatings are generally limited to a maximum service temperature for extended times of 180-200ยฐC. This paper describes how Bezinalยฎ ZnAl coatings resist to temperatures as high as 350ยฐC with no significant negative effects on either coating ductility or salt spray corrosion resistance.

Additional information

Author(s)

Charles Coffin, Hans Depamelaere, Dale King, and Walther Van Raemdonck, NV Bekaert SA, Belgium

Publication/Event/Pages

Paper presented at WAI's International Technical Conference in Istanbul, Turkey, Nov. 2009.

Year

2009