Abstract
Aluminum, a main conductive material for overhead transmission lines, has excellent resistive property against corrosion in normal environment as far as its stable skin is not broken. However there are so many lines going through coastal and/or industrial areas where corrosive particles tend to occur. Under such circumstances the conductors filled with the grease among those wire layers have been generally adopted as an anti-corrosion measure. But corrosive circumstances have been getting severer to overhead lines in the last decades and there might be some cases in future that even the conventional measure does not enable to acquire sufficient effect against corrosion. Therefore, improvement of corrosion resistance of a conductor must be one of the most significant themes in order to obtain the higher reliability of overhead transmission lines at this stage.
We successfully developed a new anti-corrosion overhead line conductor realizing much effectiveness against the acid atmosphere and/or rain as well as salty circumstances in the coastal area.
