What constitutes an overhead optical cable
Wrapped optical fibre cable technology was developed independently in the UK and Japan in the early 1980s. In the UK, Raychem Ltd had a background in with resistance to ; used for example in heat-shrinkable 33kV cable terminations and in polymer. The initial development involved an all-dielectric fibre-optic cable with a sheath made from tracking resistant material. This overhead laying method can save construction costs and shorten the construction. An optical fiber composite overhead ground wire (OPGW) is a new type of ground cable used in the high-voltage power transmission system that serves as both a conventional overhead ground cable and a communication optical cable.
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