TRANSACTIONS OF THE AMERICAN INSTITUTE OF ELECTRICAL ENGINEERS JULY TO DECEMBER, 1915 EDE VOL. XXXIV, PART II PUBLISHED BY THE AMERICAN INSTITUTE OF ELECTRICAL ENGINEERS NEW YORK, N. Y., U. S. A. 1915 Copyright, 1915 AMERICAN INSTITUTE OF ELECTRICAL ENGINEERS Press of McIlroy & Emmet, 22 Thames Street, New York CONTENTS. E. J. Amberg. (Illustrated). Construction, Maintenance and Cost of Overhead Contact Sys- tems Part II Catenary Construction-By F. Zogbaum Contact System of the Butte, Anaconda and Pacific Railway-By MEETING AT DEER PARK, MD., JUNE 29 TO JULY 2, 1915. 1459 Top Contact Unprotected Conductor Rail for 600-Volt Traction Systems By Charles H. Jones. (Illustrated...).......... Contact Conductors and Collectors for Electric Railways-By C. J. MEETING AT DETROIT, SEPTEMBER 9, 1915. Progress of the Iron and Steel Industry and the Electric Furnace- MEETING AT SAN FRANCISCO, SEPTEMBER 16 TO 18, 1915. Automatic Controlled Substations with Particular Reference to Overhead Electrolysis and Porcelain Strain Insulators By S. L. Delta-Cross Connections of Transformers for Parallel Operation of Two- and Three-Phase Systems-By George P. Roux. Phenomena Accompanying Transmission with Some Types of Star Transformer Connections-By L. N. Robinson. (Illustrated.) 2183 Abnormal Voltages in Transformers-By J. Murray Weed. (Illus- Calculation of Sudden Short Circuit Phenomena of Alternators- By N. S. Diamant. (Illustrated.).. MEETING AT NEW YORK, OCTOBER 8, 1915. Rates and Rate Making-By Paul M. Lincoln. (Illustrated.) ...... 2279 MEETING AT PHILADELPHIA, OCTOBER 11, 1915. The Combined Operation of Steam and Hydraulic Power in the Pennsylvania Water and Power Company System-By John Supplemental Power for Hydroelectric Systems-By J. F. Vaughan. Construction Elements of the Tallulah Falls Development-By Charles G. Adsit assisted by W. P. Hammond. (Illustrated.) 2389 MEETING AT ST. LOUIS, OCTOBER 19 TO 20, 1915. Single-Phase Squirrel-Cage Motor with Large Starting Torque and Phase Compensation By Val A. Fynn. (Illustrated.). The Calculation of the Long Distance Transmission Line Under Con- stant Alternating Voltage-By George R. Dean............ Recent Results Obtained from the Preservative Treatment of Tele- The Effect of Displaced Magnetic Pulsations on the Hysteresis Loss MEETING AT NEW YORK, NOVEMBER 12, 1915. Experimental Data Concerning the Safe Operating Temperature MEETING AT NEW YORK, DECEMBER 10, 1915. The Principles and Systems of Electric Motor Control-By C. D. the American Institute of Electrical Engineers, Copyright 1915. By A. I. E. E. OVERHEAD CONTACT SYSTEMS, CONSTRUCTION PART I BY E. J. AMBERG ABSTRACT OF PAPER This paper, written with special reference to the New Haven Under" Catenary Systems" a short description is given of The same applies to the supporting structures and sectionali- Under" Special Construction" only the cross-overs and river With reference to the cost data: It should be borne in THIS HIS SECTION of the paper is written with special reference The N. Y., N. H. & H. R. R. section covers an entire engine. |