optical fiber is added to the features of overhead power transmission lines. It protects power transmission lines from lightning strikes and power surges when power transmission lines fail, and also allows the addition of communication features. Opgw is currently used for many aerial lines. optical fiber is added to the features of overhead power transmission lines. It protects power transmission lines from lightning strikes and power surges when power transmission lines fail, and also allows the addition of communication features. Opgw is currently used for many aerial lines. characteristics opgw is categorized as loose buffer-type opgw made by containing optical fibers in a plastic tube and sslt-type opgw made by containing optical fiber in a stainless steel tube, depending on the structure of the optical fiber unit that wraps the optical fiber.

optical fiber is added to the features of overhead power transmission lines. It protects power transmission lines from lightning strikes and power surges when power transmission lines fail, and also allows the addition of communication features. Opgw is currently used for many aerial lines. optical fiber is added to the features of overhead power transmission lines. It protects power transmission lines from lightning strikes and power surges when power transmission lines fail, and also allows the addition of communication features. Opgw is currently used for many aerial lines. characteristics opgw is categorized as loose buffer-type opgw made by containing optical fibers in a plastic tube and sslt-type opgw made by containing optical fiber in a stainless steel tube, depending on the structure of the optical fiber unit that wraps the optical fiber.