Electrical news and engineering . current is supplied from the secondariesof house lighting transformers. The switches, of whichthere are twelve in use, have never once failed, and thesystem as a whole is giving every satisfaction. Power Distribution.A number of factors determined the choice of thepower distribution system, chief of which may be enumer-ated as follows.— 1. The main transformer station was located slightlymore than one and one-half miles from the factory loadcenter. 2. The factory load formed itself, largely, into fourcompact groups with centers about half a mile apart on theav

Electrical news and engineering . current is supplied from the secondariesof house lighting transformers. The switches, of whichthere are twelve in use, have never once failed, and thesystem as a whole is giving every satisfaction. Power Distribution.A number of factors determined the choice of thepower distribution system, chief of which may be enumer-ated as follows.— 1. The main transformer station was located slightlymore than one and one-half miles from the factory loadcenter. 2. The factory load formed itself, largely, into fourcompact groups with centers about half a mile apart on theav Stock Photo
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The Reading Room / Alamy Stock Photo

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2AXGGYW

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7.1 MB (327.2 KB Compressed download)

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1349 x 1852 px | 22.8 x 31.4 cm | 9 x 12.3 inches | 150dpi

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Electrical news and engineering . current is supplied from the secondariesof house lighting transformers. The switches, of whichthere are twelve in use, have never once failed, and thesystem as a whole is giving every satisfaction. Power Distribution.A number of factors determined the choice of thepower distribution system, chief of which may be enumer-ated as follows.— 1. The main transformer station was located slightlymore than one and one-half miles from the factory loadcenter. 2. The factory load formed itself, largely, into fourcompact groups with centers about half a mile apart on theaverage. Ease of interchange of factory motors demanded onestandard voltage for all motors, and as 550 volts had beenselected by the conference of the municipalities there re-mained no choice in this respect. Consideration of the above led to the adoption of a13200 volt distribution to the four load centers mentioned in2 above. At these points are located small transformerhouses with 550 volt distribution to the surrounding fac-. Motor-Geiierator Switchboard. tories. Fig. 2 shows in diagrammatic form the layout of theentire power system. The combined switching and transformer house at theGas Works is housed in a brick building. By means of thedisconnecting switches in this station the two outgoinglines, one spare and the local transformer may be con-nected to either of the duplicate trunk lines from the mainstation. These trunk circuits are of Xo. o B. & S. barestranded aluminum cable and the branch lines are of No. 2stranded aluminum. The three other transformer houses are of concreteslabs reinforced with expanded metal bolted to structuralsteel frames. Two of these stations have two three- phase 22s k.v.a. 13200-575 volt O.I.S.C. transformers instal-led at present. The primaries of these transformers are, ineach case, controlled by a 15000 volt automatic oil circuit-breaker. The City Owns the Motors..? radical departure is being made by the Board inthe supply of power to the

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