Construction of the 110-Kv. Transmission Line of the Washington Water Power Company

This paper describes some of the features of design and construction of the 110-kv. transmission lines of The Washington Water Power Compnay. A brief outline is given of the loads served and existing inter-connections, with other electric utilities. The general design of single- and double-pole circuits, covering the alinement, the profile, and the structure types, is taken up in detail. Special reference is made to certain long-span construction and to the construction required in heavy frost-loading areas. The materials used are fully described and several important construction details are discussed. Illustrations are included, showing the form of sag tension curves used for stringing and sagging conductors. A new type of 110-kv. fuse used in conjunction with an induction type relay is described, the new type of fuse being used on 110-kv. substations of relatively low capacity. The paper is concluded with a full description of a new method of pole preservation known as the ``Cold Treater Dust Method.''