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51317--9772-Coastal Environmental Field Trial of an Overhead Power Transmission Conductor

Coastal Lima Peru is an aggressive atmosphere.  This reports a field trial of a high-temperature low-sag ACCR (aluminum conductor, composite reinforced) conductor. It contains aluminum and aluminum matrix composite constituents, and uses a greased configuration.

 

Product Number: 51317--9772-SG
ISBN: 9772 2017 CP
Author: Colin McCullough
Publication Date: 2017
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The coastal region of Lima Peru is an aggressive atmosphere classified by ISO 9223 as an S1P1 mixed atmosphere having high deposition rates of Cl- ions and SO2. Lima has little rain so the ions are not easily washed away but instead concentrate with daily fogs. Overhead power transmission conductors in this region are required to be both of all-aluminum constructions (no steel) and to have grease between layers in order to give longer environmental durability. This talk will report on an ongoing environmental field trial of a high-temperature low-sag ACCR conductor. The ACCR contains aluminum and aluminum matrix composite constituents and for the first time uses a greased configuration. Samples were periodically harvested from the field and characterized using microscopy and strength testing. A comparison in behavior is drawn between greased and ungreased conductors that shows the beneficial role of the grease between the layers for protecting the aluminum strands.

Key words: ACCR, conductor, corrosion, field trial, grease

The coastal region of Lima Peru is an aggressive atmosphere classified by ISO 9223 as an S1P1 mixed atmosphere having high deposition rates of Cl- ions and SO2. Lima has little rain so the ions are not easily washed away but instead concentrate with daily fogs. Overhead power transmission conductors in this region are required to be both of all-aluminum constructions (no steel) and to have grease between layers in order to give longer environmental durability. This talk will report on an ongoing environmental field trial of a high-temperature low-sag ACCR conductor. The ACCR contains aluminum and aluminum matrix composite constituents and for the first time uses a greased configuration. Samples were periodically harvested from the field and characterized using microscopy and strength testing. A comparison in behavior is drawn between greased and ungreased conductors that shows the beneficial role of the grease between the layers for protecting the aluminum strands.

Key words: ACCR, conductor, corrosion, field trial, grease

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