Commonwealth Electric Company, Fifty-Sixth Street Station

Allgemeines

FirmennameCommonwealth Electric Company, Fifty-Sixth Street Station
OrtssitzChicago (Ill.)
StraßeFifty-Sixth Street
Art des UnternehmensElektrizitätswerk
AnmerkungenEines von drei Werken der "Commonwealth Electric Company". Gelegen an den Gleisen der "Chicago & Eastern Illinois Railroad". Errichtet 1899 als Vierleiter-Drehstromwerk. Kesselhaus (46 x 110 ft.) mit sechs 400-PS-Kesseln mit Überhitzern, drei Worthington-Kühltürmen (H= 80 ft, D= 20 ft.) für die Einspritzkondensation, Maschinenraum (55 x 120 ft.) mit vier Maschinensätzen für 2300/4000 V mit f= 60 Hz. Dazu gehört ferner ein altes Werk für Bogenlicht (Kesselleistung: 700 PS, zwei Porter-Allen- und drei Williams-Maschinen (zusammen 750 PS, Einzeldaten unbekannt) und 20 Bogenlichtmaschinen.
Quellenangaben[Am. Inst Elect. Eng.: Chicago electrical handbook (1904) 76]




Produkte

Produkt ab Bem. bis Bem. Kommentar
Elektrizität 1899 Beginn (erbaut)      




Betriebene Dampfmaschinen

Bezeichnung Bauzeit Hersteller
Dampfmaschinen um 1899 Southwark Foundry & Machine Co.
Dampfmaschine um 1899 Southwark Foundry & Machine Co.




Maschinelle Ausstattung

Zeit Objekt Anz. Betriebsteil Hersteller Kennwert Wert [...] Beschreibung Verwendung
1904 Dampfkessel 6   Babcock & Wilcox Co. Einzelleistung 400 PS Mit Ãœberhitzern und Meade conveyorn für die Kohle und automatischer Rostbeschickung  




Firmen-Änderungen, Zusammenschüsse, Teilungen, Beteiligungen


Zeit = 1: Zeitpunkt unbekannt

Zeit Bezug Abfolge andere Firma Kommentar
1899 Nebenwerk zuvor Commonwealth Electric Company 1899 erbaut




Allgemeines

ZEIT1904
THEMABeschreibung
TEXTSituated just west of the Chicago & Eastern Illinois tracks is the 56th Street polyphase generating plant of the Commonwealth Electric Company. This plant is a notable one in many ways; for example, its location near a fashionable boulevard in the heart of a residence district. Its history as a pioneer in the three-phase, four-wire generating service, and its unique engineering features, combine to make it, although installed five years ago, a most interesting central station. The station building proper, 112x120 feet, is an attractive one in appearance. The style of architecture of the building is such that none of its beauty is lost in the attainment of structural solidity. The boiler room, about 46 x 110 feet, contains six 400-horse-power Babcock & Wilcox boilers with superheating coils. A Meade conveyor carries the coal from the hoppers, into which cars are unloaded, to the bunkers
of 1,000 tons capacity above the boilers. All boilers are equipped with automatic stokers, and above the boilers is a large space reserved for a possible future installation of an economizer. Three large Worthington cooling towers, 80 feet in height and 20 feet in diameter, containing 10,000 cooling tiles each, cool the injection water supplied to the jet condensers used with the several generating units. In the engine room, 55 feet in width, 120 feet in length, 57 feet in height in the clear, there are three polyphase generating units, two 1,000-kilowatt sets and one 400-kilowatt set. These units are identical in design, being of the vertical cross-compound type of the Southwark
Foundry Machine Company's design, and the generator of the revolving field type, giving three-phase, 60-cycle,
4,000 volts delta pressure, 2,300 volts, phase to neutral. Two steam-driven exciter sets, eacli of 30 kilowatts capacity, and one induction motor-driven set of the same capacity, furnish the necessary exciting and auxiliary
operating current for the station. The switchboard is of liberal double-deck design, very handsome in appearance, and extends along the west wall toward the north end of the building. All line oil switches on this board are hand operated, the generator and bus tie switches only being of the remote control compartment type. The upper section of the board comprises the operating panels, while on the lower panels are the selector knife switches used in connection with the duplicate busses. Pressure compensators are provided 011 all lighting circuits, thus obviating return pressure wires.
Between the old and the new plant of the generating station there has been built an intermediate structure for the accommodation of compartment oil switches of the solenoid operated type; but the substation frequency changing machines occupy the north end of the engine room, and their location defines the extent of the present and future 56th Street Generating Station. The unoccupied floor space in the new plant is sufficient for the accommodation of four 1,000-kilowatt motor generator sets, but there are contemplated at present two 500 and two 1,000-kilowatt sets, the two 500 sets being already installed. At the south end of the station there has also been installed one 50-kilowatt induction motor-driven exciter set, there being space for additional installation of these units. The frequency changing motor generating sets consist of two machines of 60O and 500-kilowatt capacity respectively, mounted on the same shaft and with a common base. The motor requires a supply of 25-cycle, 9,000-volt, three-phase energy, while the generator delivers 3-phase, 60-cycle energy at 4,150 volts delta pressure. The neutral for the 60-cycle machine is brought out and connected to the neutral of the system, both being grounded.
QUELLE[Am. Inst Elect. Eng.: Chicago electrical handbook (1904) 76]


ZEIT1904
THEMABeschreibung des Werks für Bogenlampen
TEXTAt the north of the new plant stands the old arc-light plant, the only remaining series arc-light plant owned by
the company. This plant was one of the original acquisitions of the company at the time of the general consolidation of electric light interests which gave rise to the Commonwealth Electric Company. This plant contains about 700 horse-power capacity in boilers, with two Porter-Allen engines and three Williams engines, all aggregating about 750 horse-power. Twenty arc-light machines of various types supply a load of eight hundred and forty 1,200-candle-power and six hundred and eighty 2,000-candle-power arc lights. Most of the arc-light machines are driven from a 45-foot
jack shaft, formerly direct connected at each end to a 500-horse-power engine, but now motor driven. The series arc-lamp load is decreasing at a rate of about 10 per cent annually, and the ultimate displacement of this system by the low-tension arc is anticipated by the company. In the old arc plant there are two motors, one of 600-kilowatt and the other of 300-kilowatt capacity, connected at the ends of a long jack shaft driving the arc machinery. One of these is a complete motor generator set similar to those described above and is so connected as to enable it to do duty either as a motor, driving the shaft, or as a frequency changing set. The switching facilities for the substation have been provided for in the intermediate structure built especially for that purpose, and the control of these switches is afforded by an extension to the original switchboard, located in the engine room. The generating machinery in this plant will probably remain intact and operate, at least for a time, as daily "Peak" machinery, thus giving another illustration of the policy of centralizing generating capacity, particularly during long-time light-load periods.
QUELLE[Am. Inst Elect. Eng.: Chicago electrical handbook (1904) 77]