Development of new type up-rating conductors with low sag

As a city area progresses, it becomes difficult to obtain new routes for overhead power transmission lines and to construct transmission tower. In order to utilize existing transmission line equipped with aluminum alloy conductor steel reinforced (ACSR) and increase capacity at a low cost, up-rating conductors with low-sag such as gap type heat resistance aluminum alloy conductor steel reinforced (GTACSR) are used. But considerable time and effort is required for installation. Therefore we developed the new type low sag conductors with up-rating which were superior to GTACSR on the performance (capacity, reduction effect of sag), these conductors are easier to install. Also we investigated the workability and accessories, the prospects of commercialization are good.