Excerpt from The Electric Journal, Vol. 15: January-December, 1918 The outstanding feature in the street railway field has been the stability in design of the present standard lines, permitting the railway companies to feel secure in establishing standards for future practice. The present standard railway motors and control outfits have been worked up to a point where improvements are extremely difficult, and the reports of their performance in ser vice are very gratifying. As in 1916 the outstanding feature of switchboard business for 1917 was the continued demand for switch gear for power stations of tremendous initial and ulti mate capacity. Initial capacities of 66000 k.v.a. And ultimate capacities of as high as 387 000 k.v.a. Are repre sented in installations projected and for which switch gear was purchased during the year. Improvements have been made both in the' major apparatus forming part of the switch gear and also in the smaller details. In the first class may be mentioned the completion of a number of 150000 volt outdoor oil circuit breakers of rupturing capacities far in advance of anything hereto fore within the limits of high voltage apparatus. With their guaranteed arc rupturing capacity, with voltage maintained, of 1 000 000 it is felt that the question of high-voltage power concentration is solved for at least sometime. There has also been the development of a successful and simple control equipment for auto matic rotary converter substations. One such outfit has been in successful operation for some time and others are under construction. To a very large degree the bulk and complexity characteristic of earlier control equip ment for such installations has been eliminated. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.