File:Factory and industrial management (1891) (14597556017).jpg

Identifier: factoryindustria23newy (find matches)
Title: Factory and industrial management
Year: 1891 (1890s)
Authors:
Subjects: Engineering Factory management Industrial efficiency
Publisher: New York (etc.) McGraw-Hill (etc.)
Contributing Library: Engineering - University of Toronto
Digitizing Sponsor: University of Toronto

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s pertinent to our presentsubject, however, to draw attention to the fact that the voltage at thisplant has recently been increased from 11,000 to 22,000 volts, makingit possible to transmit four times the energy over the same lines. Al-though this was intended when the plant was first installed it wasthought best to gain experience with the lower voltage before adoptingthe higher for every day operation, the more so since the capacity ofthe lines was amply sufficient to transmit at the lower voltage all thepower that could then be disposed of in Buffalo. However, themarket for Niagara power has grown very rapidly, demanding theerection of a third transmission line and the above increase in voltage. One of the most important uses of high-tension current at thepresent time is in suburban and interurban electric railway work. Anotable example is furnished by the Union Traction Company, ofIndiana, which operates a system of electric railways, including 153 ELECTRIC POWER TRANSMISSION. 87
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INDUCTION MOTOR, TRANSFORMERS AND HIGH POTENTIAL SWITCHBOARD, HELENA, MONTANA. miles of track and serving 300,000 people, from one central powerplant. This power plant is located at Anderson and distributes three-phase alternating current at 14,000 volts to eight sub-stations locatedalong the railway lines running to Indianapolis, Marion and )\Iuncie.These sub-stations are provided with transformers, rotary convertersand storage batteries for furnishing direct current to the trolley lines.In addition there is a portable sub-station mounted upon a car whichmay be taken to any point to help out a local sub-station where the loadis temporarily heavy. Some interesting data have been obtained by the Union TractionCompany, showing the cost of power at the bus-bars. In July, 1901,this amounted to $3,673.33 for 953,000 KW. hours, or $.00384 perKW.-hour. The road has been very successful and a number of exten-sions are contemplated. It may be well to draw attention here to one or two general c

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