GIR IN MEMORIAL George Davidson -1 on Professor of Geography University of California / *' POWER STATIONS POWER STATIONS BY THOMAS EDWARD MURRAY, LL.D., D.Sc. Past President Association of Edison Illuminating Companies, Member American Society Mechanical Engineers, Fellow American Institute Electrical Engineers. NEW YORK 1QQ9 J- \J fW COPYRIGHT, 1932 BY THOMAS EDWARD MURRAY Printed in U. S. A. ULStA PREFACE The birthday of the central station industry engaged in the production and distribution of electrical energy for heat, light and power purposes can be assigned to the 4th of September, 1882. On that day regular commercial service was inaugu- rated from the old Pearl Street Station (New York) designed and built for the Edison Electric Illuminating Company of New York by the master of the industry Thomas Alva Edison. Many of the characteristic features of the most modern plant of to-day, such as direct connected units, high speed prime movers, water tube boilers, coal and ash conveying ma- chinery and units operated mechanically and electrically in parallel were incorporated in this remarkable pioneer plant. While the total capacity of the six units of this early instal- lation was less than one-sixth of the capacity of a single unit of one of our huge modern generating stations, it can be said to be the prototype of the stations that followed it for many years. The problems that presented themselves then were largely questions of design and application for which there was no precedent and no experience to point the way. Now all these things have changed; the mechanical and electrical apparatus has become more or less standardized and the building of a large power plant is principally a matter of the economical arrangement of the equipment, the development of the struc- tural design and the carrying out of the building and instal- lation operations with the utmost efficiency in the utilization of labor and material. To produce a structure which is pleasing to the eye and which fulfils its mission from an operating standpoint and at the lowest possible cost, represents a co-ordination of admin- istrative, engineering and constructive functions which can be secured only through an experienced and competent organiza- tion capable of synchronizing the preparation of specifications, placing of contracts and the routing and delivery of all of the immense amount of materials and supplies that enter into such a complex structure as a modern power station. vii viii PREFACE It is necessary that the organization provide for inspection in the field of the materials and equipment, provision for their delivery in the order and at the time required, and the han- dling, storage and accounting for the supplies as they arrive on the job. In the following pages are described and illustrated some of the largest plants steam and hydro-electric amounting in total to over a million and a half horsepower, which have been designed and constructed during the past twenty years by Mr. Thomas E. Murray and associated engineers. A careful study of this volume will be of interest to oper- ators as well as builders of central power stations and will reveal many unique features in construction and arrangement, embodying the results of long experience in connection with the construction and operation of some of the largest hydro- electric, street railway and steam generating systems in the country. JOHN W. LIETC. THOMAS ALVA EDISON The Master Pioneer of the Electrical Industry, to whose inventive genius we owe the conception of the central station and who was the builder of the first central station for the generation and distribution of electricity for light, heat and power. ANTHONY NICHOLAS BRADY To whose economic vision and constructive genius the Electrical Industry is indebted for the expansion of the Public Utility enterprises that made possible the building of electric power stations aggregating over one million three hundred thousand horsepower. INTRODUCTION THE OBJECT of this volume is to supplement the book entitled "Electric Power Plants" published in 1910 and to make available in convenient and concise form some of the more important data relating to the design of several modern steam and hydro-electric stations which have been erected under the author's supervision, with illustrations of their outstanding features. Because of their related interest., a boiler plant for a Government War development and a boiler plant for an oil refinery have been included. The design of a power station invariably presents new problems that must be solved for each individual case., not only because of local requirements of site and load characteristics, but also because of advances in the art and the rapid development that is taking- place in the design of both the major and minor steam and electrical equipment. The design of a modern station, with its complexity of detail, is not the product of a single mind and the author wishes to take this opportunity to renew his acknowledgment and appreciation of the efficient co-operation and assistance which he has received from the executive and engineering staffs of the companies concerned and of his own engineering assistants. THOMAS EDWARD MURRAY. ix CONTENTS PAGE Millers Ford Station 3 Riverside Station 21 Sherman Creek Station 33 Explosives Plant "C" 51 Prudential Oil Corporation 69 Williamsburg Power Station Annex 77 Hell Gate Station 83 Waterside Station No. 1 109 Waterside Station No. 2 119 Washington Street Station .131 Trenton Falls Hydro-Electric Station 141 Hales Bar Station 151 Cohoes Falls Station 159 Substations 169 Table of Stations Designed Under Supervision of Thomas E. Murray 178 MILLERS FORD STATION The Dayton Power and Light Company Dayton, Ohio MILLERS FORD STATION, DAYTON, OHIO MILLERS FORD STATION DAYTON POWER AND LIGHT COMPANY, DAYTON, OHIO Capacity: 45,000 kw. Building: Brick with steel frame on concrete foundation. Boiler Room, 144 ft. x 104 ft. Turbine Room, 117 ft. x 74 ft. Electrical Galleries, 117 ft. x 39 ft. Boilers: Six 1373 h.p. water tube boilers with superheaters and Metropolitan Cinder and Dust Catchers. Stokers: One fourteen retort underfeed for each boiler. Stoker Drive: Motor and engine. Forced Draft: Four turbine-driven blowers, 80,000 cu. ft. p.m. capacity. One motor-driven blower, 80,000 cu. ft. p.m. capacity. Stacks: Two 16 ft. dia. steel, lined with 4 in. brick; 310 ft. above boiler room floor. Coal Handling: Steel tower on boiler house roof; coal is distributed by three-ton coal car to bunker. Ash Handling: Ashes removed in J^-ton cars from hoppers to outside of building. Steam Conditions: 200 lb. pressure, 125 F. superheat. Condensers: One 30,000 sq. ft. surface, and two 15,000 sq. ft. surface, with combination turbine and motor-driven auxiliaries. Feed Pumps: Two 1,000 g.p.m. and two 500 g.p.m., turbine driven. Heaters: Two open feed water, each 500,000 Ibs. per hour capacity. Service Pumps: Two 500 g.p.m. and one 300 g.p.m., tur- bine-driven. One 300 g.p.m., motor-driven. 4 MILLERS FORD STATION Generating Equipment: One 20,000 k.w., 6600 volts, 60 cycle, 3 phase, horizontal turbo-generator. Two 12,500 kw., 6600 volt, 60 cycle, 3 phase, horizontal turbo-gen- erators. 4 Exciters: Two 170 kw. and one 110 kw., 240 volt, direct connected. One 100 kw., 240 volt, geared turbine unit. Transformers: Two banks 900 kw., 6,600/230 volt. Two banks 200 kw., 6600/230/115 volt. Motor Generators: One 12.5 kw. for battery charging. Switching Equipment: Remote control electrically operated oil switches. Storage Battery: 120 cell, 250 volt, 120 ampere for one hour. Reactance Coils: Nine 700 amp., 6600 volt, single phase, 60 cycle, 400 kv.a. Eighteen 350 amp., 6600 volt, single phase, 60 cycle, 200 kv.a. Nine 25 amp., 6600 volt, single phase, 60 cycle, 5.7 kv.a. Traveling Crane: One 75-ton, motor-driven, with 10-ton auxiliary hoist. District Served: Lighting, industrial power and railways in City of Dayton and surrounding communities. Built: 1918. MILLERS FORD STATION MILLERS FORD STATION MILLERS FORD STATION COAL HANDLING TOWER., MILLERS FORD STATION MILLERS FORD STATION MILLERS FORD STATION FORCED DRAFT BLOWERS, MILLERS FORD STATION 10 MILLERS FORD STATION MILLERS FORD STATION 11 MILLERS FORD STATION i co MILLERS FORD STATION 13 BOILER FEED PUMPS, MILLERS FORD STATION 14 MILLERS FORD STATION O MILLERS FORD STATION 15 16 MILLERS FORD STATION MILLERS FORD STATION LUuU.*i h H T u , - i ^ "I HI c H H C/5 Q r o 02 w ij ^ RIVERSIDE STATION Municipal Gas Company Albany, New York RIVERSIDE STATION, ALBANY, N. Y. RIVERSIDE STATION MUNICIPAL GAS COMPANY ALBANY, NEW YORK Capacity: 15,000 kw. Building: Brick with steel frame. Concrete foundations, partly on piles. Boiler Room, 121 ft. x 51 ft. Turbine Room, 50 ft. x 73 ft. Electrical Galleries, 48 ft. x 73 ft. Boilers: Six 650 h.p. water tube with superheaters. Stokers : One 7 retort underfeed for each boiler. Stoker Drive: Two 6x7 vertical engines Avith variable speed transmissions. Forced Draft: Two 80,000 cu. ft. turbine-driven geared blowers, 7 in. static pressure. Stacks: Two 9 ft., 6 in. diameter, steel, unlined. Height above boiler floor, 174 ft. Coal Handling: Traveling tower with crusher on top of boiler house. Capacity, 45 tons per hour. Locomotive crane for storage. Ash Handling: Dump cars. Generating Equipment: Two 7500 kw., 80% p.f., 12,000 volt, 3 phase, 40 cycle, 2400 r.p.m., turbo-generators with direct connected exciters. Steam Conditions: 200 Ibs. pressure and 100 F. super- heat. Condensing Equipment: Two 8,000 sq. ft. surface con- densers with turbine-driven auxiliaries. Traveling Crane: One 50-ton electric with 10-ton auxiliary hoist. Feed Pumps: Two 500 g.p.m. centrifugal pumps, turbine- driven. 21 22 RIVERSIDE STATION Heaters: Two 6,000 h.p. open heaters. Service Pumps: Two 500 g.p.m. centrifugal pumps, tur- bine-driven. 4 Exciters: Two 55 kw., direct connected. One 100 kw., steam-driven. Transformers: Two 1,000 kv.a., 3 phase, 12000/2400 volt. One 40 kw., single phase, 2400/240/120 volt. Three 100 kw., 3 phase, 2400/240 volt. Motor Generators: One 10 kw. battery charging. Switching Kquipment: Electrically operated oil switches. Storage Battery: 120 cells, 240 volt, 60 amp. for one hour. Reactance Coils: For 12,000 volt feeders and transformer banks. District Served : Albany and outlying suburbs. Connec- tions made with Cohoes Power and Light Corporation. Station Built: In 1915. RIVERSIDE STATION RIVERSIDE STATION RIVERSIDE STATION RIVERSIDE STATION RIVERSIDE STATION H Q w o o OS H KIVERSIDE STATION RIVERSIDE STATION cc o So ^ w H 30 RIVERSIDE STATION Jiiliil li jiil I II! SHERMAN CREEK STATION The United Electric Light and Power Company New York City SHERMAN CREEK STATION, NEW YORK CITY SHERMAN CREEK STATION THE UNITED ELECTRIC LIGHT AND POWER COMPANY 201sT STREET, NEW YORK Capacity: 151,600 kw. Building: Brick with steel frame on concrete foundations. Boiler Room, 209 ft. x 199 ft. Operating Room, 199 ft. x 71 ft. Electrical Galleries, seven floors, 170 ft. x 48 ft. Boilers: Forty-four 650 h.p. water tube, with superheaters and equipped with Metropolitan Cinder Catchers. Stokers: Seven retort underfeed. Stoker Drive: Thirty h.p. induction motors with variable speed transmissions. Forced Draft: Fifteen double inlet turbine-driven blowers each having a capacity of 80,000 cu. ft. per minute at 7 in. static pressure. Stacks: Four 20 ft. 6 in., steel lined with brick, 300 ft. above first floor. Coal Handling: Two one-man towers each equipped with 11/2 ton buckets, capacity 300 tons per hour. Ash Handling: Dump cars and electric locomotives. Steam Conditions: 200 Ibs., 100 F. superheat. Condensers: Three 2 pass, 20,000 sq. ft. surface with turbine-driven auxiliaries. Two radial flow, 30,000 sq. ft. surface with turbine-driven auxiliaries. Three 40,000 sq. ft. surface with turbine-driven auxiliaries. Feed Pumps: Three 1,000 g.p.m. turbine-driven. One 500 g.p.m., motor-driven. Two 1,000 g.p.m. motor driven. Heaters: Four 600,000 Ibs. steam per hour, open type. Service Pumps: Three 1,000 g.p.m., turbine-driven. 33 34 SHERMAN CREEK STATION Generating Equipment: Three 15,200 kw., 7500 volt, 60 cycle, 3 phase horizontal turbo-generators. Two 20,000 kw. 6600 volt, 25 cycle, 3 phase horizontal turbo- generators. Three 22,000 kw., 7500 volt, 60 cycle, 3 phase, horizontal turbo-generators. Exciters: Six 200 kw., 250-275 volt, motor-driven. Motor Generators: One 7500 kw., frequency changer 25 cycle, 6600 volt, 60 cycle, 7800 volt. Switching Equipment: Remote control electrically oper- ated oil switches. Storage Battery: One 142 cell, 3500 amp., for one hour. Reactance Coils: Exciters, five sets of three coils, 2.5 kv.a., 15 amp., 7800 volt. Feeders, 23 sets of two coils, 80 kv.a., 300 amp., 7800 volt. Bus ties, three sets of three coils, 1624 kv.a., 2,000 amp., 7800 volt. Traveling Crane: Four motor 75-ton crane with 10-ton auxiliary hoist. District Served: 60 cycle service in Boroughs of Man- hattan, Queens and Bronx, and in Westchester County. 25 cycle service to the N. Y., N. H. & H. Railroad. Station Built: 1913. SHERMAN CREEK STATION SHERMAN CREEK STATION CROSS SECTION THROUGH ELECTRICAL GALLERIES,, SHERMAN CREEK STATION SHERMAN CREEK STATION cr'o ~..Q ' o oo cr ri a 01, ., . 9 SHERMAN CREEK STATION FIRING AISLE, SHERMAN CREEK STATION SHERMAN CREEK STATION 39 < A W CO H" fc w W 40 SHERMAN CREEK STATION METROPOLITAN CINDER CATCHER, SHERMAN CREEK STATION SHERMAN CREEK STATION TURBINE ROOM, SHERMAN CREEK STATION SHERMAN CREEK STATION (M SHERMAN CREEK STATION H CO W w - O u CJ O CO SHERMAN CREEK STATION SHERMAN CREEK STATION a a tf O fc *} 53 a cc en SHERMAN CREEK STATION SHERMAN CREEK STATION 48 SHERMAN CREEK STATION t Jyi ii EXPLOSIVES PLANT "C' United States Government Nitro, West Virginia O o t W EH & O E a w J o PC EXPLOSIVES PLANT "C" UNITED STATES GOVERNMENT NITRO, WEST VIRGINIA Capacity: Turbo-generators 3,000 kw., boilers 35462 h.p. Buildings: Power House, brick with steel frame on concrete foundation. Boiler Houses are galvanized corrugated iron with steel frames on concrete foundations. Boiler houses, two, 564 ft. x 49 ft.; power house, 165 ft. x 40 ft.; Electrical Galleries, 165 ft. x 34 ft. Boilers: Thirty-four 1043 h.p. water tube. Four with superheaters. Metropolitan Cinder Catchers. Stokers : One ten retort underfeed for each boiler. Stoker Drive: Twelve 7x8 vertical reciprocating engines. Forced Draft: Ten turbine-driven blowers each having a capacity of 100,000 cu. ft. per minute, 6 in. static pressure. Stacks: Four 16 ft. unlined steel stacks, 264 ft. above boiler-house floor. Coal Handling: Three 200-tons per hour locomotive cranes each having a 5 cu. yd. bucket. Coal picked up by cranes and dropped into crusher cars on top of building. Ash Handling: Industrial railway having three-ton battery locomotives and side dump cars. Service Pumps: Eight 6,000 g.p.m. turbine-driven, supply- ing water to station and plant in general. Three 2500 g.p.m. turbine-driven centrifugal pumps for fire service. Two 2500 g.p.m. turbine-driven centrifugal pumps for town supply. Feed Pumps: Six 1,000 g.p.m. three-stage centrifugal pumps turbine-driven. 51 52 EXPLOSIVES PLANT "C" Heaters: Three open feed water heaters each 600,000 Ibs. per hour. Generating Equipment: Three 1,000 kw., 6600 volt, 3 phase, 60 cycle turbo-generators. Steam Conditions : 200 Ibs. saturated for general use in plant and 200 Ibs. with 100 F. superheat for power house. Exciters: One 25 kw. turbine-driven. Three 12.5 kw. direct connected. Series Lighting Circuits: Four 34 kv.a. series lighting circuits. Transformers: Six 150 kv.a. 6600/240 volts. Five 34 kw. Constant current 6.6 amps. Motor Generator: One 10 kw. 125 volt. Switching Equipment: Remote control electrically operated oil circuit breakers. Storage Battery: One 60-cell, 200 amp. for one hour. Reactance Coils: Six single-phase, 6 kv.a. 26 amp., 60 cycle, 6600 volt. Traveling Crane in Power House: Hand operated. District Served: Explosives Plant "C." Built: 1918. EXPLOSIVES PLANT "C 5 o EXPLOSIVES PLANT "C" EXPLOSIVES PLANT "C" 55 w - w > o O H I Q W H s 56 EXPLOSIVES PLANT C' BOILER HOUSE, UNITED STATES GOVERNMENT EXPLOSIVES PLANT "C' EXPLOSIVES PLANT "C" 57 58 EXPLOSIVES PLANT "C" FIRING AISLE IN BOILER HOUSE, UNITED STATES GOVERNMENT EXPLOSIVES PLANT "C" EXPLOSIVES PLANT "C r 59 60 EXPLOSIVES PLANT "C" o O EXPLOSIVES PLANT C" .N, n-YW-he- / * ^ - ^- * % ! ilr juittju. !i IK Jli Jt * u ; ^~ is s ,,. i>_fi :: ias. rx-~: EXPLOSIVES PLANT "C" F J OUTDOOR TRANSFORMER STATION, UNITED STATES GOVERNMENT EXPLOSIVES PLANT "C" EXPLOSIVES PLANT "C ! fcfeoo V CS-SCNTlAL. ORDislAR-l COMNECTIONS FOR. 1 ., 1 wwwvvv Z70V: . TRANSFORMER. CoMNBCT>OM ReilPe*rriA,U t-ECTIONfc TYPICAL CONNECTIONS. FOR. LI^HTINC, TKANd FORMERS TYPICAL POLE DIAGRAM, UNITED STATES GOVERNMENT EXPLOSIVES PLANT "C" EXPLOSIVES PLANT "C" t '*' \\i\ PLANT EXP Q w H S ^J TRANSFORMER EXPLOSIVES PLANT "C" 65 i { i i .*- tit- OS w k o o 6 C/3 PRUDENTIAL OIL CORPORATION Baltimore, Maryland BOILER HOUSE, PRUDENTIAL OIL CORPORATION PRUDENTIAL OIL CORPORATION CURTIS BAY (BALTIMORE, MD.) Capacity: 3900 boiler h.p. Building: Concrete foundations, brick walls and steel roof trusses. Boilers: Six 650 h.p. water tube boilers with combination stoker and gas or oil firing. One 1,000 h.p. gas-fired superheater. Stokers: Seven retort underfeed for each boiler. Stoker Drive: Two single cylinder and one two-cylinder non-condensing engines driving line shaft. Forced Draft: Two 80,000 cu. ft. turbine-driven blowers. Stacks: Two radial brick stacks each 9 ft. diameter, 200 ft. above boiler room floor. Coal Handling: 20-ton locomotive crane raises coal from cars to hopper. Ash Handling: 8 in. steam jet ash-conveyor. Steam Conditions: 135 Ib. pressure. Feed Pump: Two 250 g.p.m. and one 600 g.p.m. cen- trifugal pumps, turbine-driven. Heaters : One open-feed water heater, 4,000 h.p. District Served: Supplies steam to oil refinery. Built: 1915. Extension added in 1920. 69 70 PRUDENTIAL OIL CORPORATION j I I 3 o U DS w w O PRUDENTIAL OIL CORPORATION as o a, as o U i-j PRUDENTIAL OIL CORPORATION PRUDENTIAL OIL CORPORATION PRUDENTIAL OIL CORPORATION WILLIAMSBURG POWER STATION ANNEX '- ' . ' , Brooklyn Rapid Transit Company Brooklyn, New York WlLLIAMSBURG POWER STATION ANNEX, BROOKLYN, N. Y WILLIAMSBURG STATION ANNEX BROOKLYN RAPID TRANSIT COMPANY BROOKLYN, N. Y. Capacity: 70,000 kw. Building: Brick with steel frame on concrete foundations. Turbine room, 126 ft. x 75 ft. Generating Equipment: Two 35,000 kw., 11,000 volt, 25 cycle, 3 phase, horizontal turbo-generators. Condensing Equipment: Two 50,000 sq. ft. surface con- densers with turbine-driven auxiliaries. Feed Pumps: Three 8 in., 1,000 g.p.m. five-stage turbine- driven. Heaters: Two open-type, 1,000,000 Ibs. per hour. Service Pumps: One 1,000 g.p.m. turbine-driven. Traveling Crane: One 100 ton, four motor. Exciters: Two 135 kw. direct connected to generators. Switching Equipment: Remote control electrically oper ated oil switches. Storage Battery : One 59 cell, 320 for one hour. Reactance Coils: On feeders and bus. District Served: Railway System of Brooklyn. Built: 1920. 77 78 WILLIAMSBURG STATION ANNEX WILLIAMSBURG STATION ANNEX 79 80 WILLIAMSBURG STATION ANNEX HELL GATE STATION The United Electric Light and Power Company New York City i; 5" ' ^^^^^^^WI^SHPP1!S1I1|1{ ^ HELL GATE STATION THE UNITED ELECTRIC LIGHT AND POWER COMPANY NEW YORK, N. Y. Capacity: Initial, 150,000 kw. Ultimate, 300,000 kw. Building : Brick with steel frame, concrete foundation ; Boiler Room, 133 ft. x 369 ft. ; Turbine Room, 100 ft. x 369 ft. ; Electrical Galleries, reinforced concrete with bearing walls, 105 ft. x 211 ft. Boilers: Initial, 12, 1890 h.p., water tube with 2135 sq. ft. superheated surface per boiler. Stokers: Initial, two 14 retort (double end) for each boiler. Stoker Drive: Constant speed A.C. motors with variable speed transmission. Forced Draft: Initial, eight double inlet motor-driven blow- ers each having a capacity of 120,000 cu. ft. per minute at 7 in. static pressure. Stacks: Four 22 ft. dia. steel brick-lined, 258 ft. above boiler floor. Coal Handling: Two two-ton electrically operated steel towers (grab buckets raise coal from barges to hoppers and crushers at top of tower), cable cars to bunkers. Skip hoist and drag scraper for coal storage. Ash Handling: Hydraulic trough system with traveling grab buckets over pits. Generating Equipment: Initial, two 40,000 kw. 13200 volt, 60 cycle, 3 phase, horizontal turbo-generators, 90 % P.F. Two 35,000 kw. 11400 volt, 25 cycle, 3 phase, horizontal turbo-generator unity power factor. Two 2,000 kw. 2350 volt, 60 cycle, 3 phase, non-condensing horizontal house turbines, 80% P.F. Steam Conditions: 250 Ibs. pressure, 200 F. superheat. 83 84 HELL GATE STATION Condensers: Initial, four 2 pass, 50,000 sq. ft. surface with 70,000 g.p.m. pumping equipment for each. Circulating Pumps: Initial, two 35,000 g.p.m. pumps for each condenser. Condensate Pumps: Four 1200 g.p.m. and four 1350 g.p.m. motor-driven. Traveling Crane: Initial, one 4 motor 110 ton with 10 ton auxiliary hoist. One 90 ton with 50 ton auxiliary hoist on separate trolley. Feed Pumps: Initial, four 1,000 g.p.m. motor-driven and two 1,000 g.p.m. steam-driven. Fire Pumps: One 1,000 g.p.m., turbine-driven. Booster Pumps: Four 750 g.p.m., motor-driven. Closed Heater Condensate Pumps: Four 200 g.p.m., motor-driven. Fresh Water Pumps: Two 100 g.p.m., motor-driven. Ash Handling Pumps: Three 5,000 g.p.m., motor-driven. Service Pumps: Initial, two 1,000 g.p.m., motor-driven. Heaters: Initial, two open cylindrical type, 1,000,000 Ibs. per hour. Four 1750 sq. ft., closed type. Exciters: Initial, one 165 kw., direct connected to each 60 cycle turbine. One 135 kw., direct connected to each 25 cycle turbine. Two 25 kw., 250 volt D.C., motor-driven, and two 25 kw., 250 volt D.C., turbine-driven, for house alternators. Transformers: Initial, two banks of three 2500 kv-a., 13200/ 2300 volts. Motor Generators: Initial and ultimate, six 50 kw., 250 volt D.C. for switch control and emergency lighting. Switching Equipment: Remote control, isolated phase, electrically operated oil switches. Storage Batteries: Initial, two 118 cell, 240 ampere hour, batteries for switch control. One 104 cell, 240 ampere hour, storage for emergency lighting. HELL GATE STATION 85 Reactance Coils: Initial, generators (5% each) 2 sets of 1920 amp., 60 cycle, single phase, 13200 volt, 730 kv.a. Two sets of 1840 amp., 25 cycle, single phase, 11,000 volts, 585 kv.a. Bus ties (5% each), 2 sets of 1920 amps., 60 cycle single phase, 13200 volt, 730 kv.a. Two sets of 1840 amp., 25 cycle, single phase, 11,000 volts, 585 kv.a. Feeders (3%), 34 sets of 350 amperes, single phase, 67 and 80 kv.a. Interstation ties (5%), 12 sets of 350 amperes, single phase, 111 and 134 kv.a. House transformer (12%), 2 sets 263 amps., 60 cycle, single phase, 13200 volt, 256 kv.a. 2300 volt bus ties (20%), 1 set 1510 amps., 400 kv.a. District Served: Borough of Manhattan, Queens and the Bronx, and County of Westchester. Station Built: 1921. HELL GATE STATION 1=3 o EH < EH C/3 W EH ^ O HELL GATE STATION 87 CROSS SECTION THROUGH ELECTRICAL GALLERIES, HELL GATE STATION 88 HELL GATE STATION CROSS SECTION THROUGH FIRING AISLE, HELL GATE STATION HELL GATE STATION 1 I I I I ! ' i ' I ! ) iWftafl'. . J 1 Sri,! fill =^fc^--T^p=JF=^F=WWr l 90 HELL GATE STATION HELL GATE STATION 91 n htiMiigiii iii .5 1 ^ *">iiifii | \n\\\ H 4 I ^ j? \ W ffl HELL GATE STATION HELL GATE STATION., JANUARY 15TH, 1921 HELL GATE STATION o EH .. oooo ^ 162 COHOES STATION INTERIOR OF GATE HOUSE, COHOES STATION COHOES STATION 163 Cfi t w o o o fc - w 6 164 COHOES STATION COHOES STATION 165 166 COHOES STATION COHOES STATION 167 o H CC w W O B o cc w O 168 COHOES STATION SUBSTATIONS SUBSTATIONS 171 o JJ U H H CO 172 SUBSTATIONS SUBSTATIONS 173 OUTDOOR SUBSTATION, RIVERSIDE STATION, MUNICIPAL GAS Co. 174 SUBSTATIONS SUBSTATIONS 175 176 SUBSTATIONS SUBSTATIONS 177 178 SUBSTATIONS O o o o o o o o o o Wffiffi pqpq pq r: r- 4. o O ONS DESIGNED CO O H < PH H H O fl H S.S. II 02 CC "- c fi H-; S A O ^ o I I Qi co H h- 1 hJ ^ s H cd co H {H * " o K. i H - ^j .9 o^ in *" C3 -"tj pq ^ ^5 . g , "S S a . . CO -M O "a . , i i p^ OJ c . oJ .'P 2 "C 2 :l 'I : : :F.I fl ^ K*~ ^.^ - K ffi - ' M T a ^ ^ . -4-> "^ ' pq 14 DAY USE RETURN TO DESK FROM WHICH BORROWED LOAN DEPT. This book is due on the last date stamped below, or on the date to which renewed. Renewed books are subject to immediate recall. LD 21A-60m-4,'64 (E4555slO)476B General Library University of Californii Berkeley