File:Image from page 112 of "Electric railway journal" (1908).jpg

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English: Identifier: electricrailway331909newy

Title: Electric railway journal Year: 1908 (1900s) Authors: Subjects: Electric railroads Publisher: [New York] McGraw Hill Pub. Co Contributing Library: Smithsonian Libraries Digitizing Sponsor: Smithsonian Libraries

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Text Appearing Before Image: Pittsburg 1200-Volt Line—Luntzs Bridge with the compensators in circuit. When full speed is at- The generator fields are also connected in series throughtained the compensator is cut out and the motor direct a single equalizer bus, to insure both machines taking aconnected to the 13,200-volt buses. The oil switches con- correct proportion of the load.

Text Appearing After Image: Pittsburg 1200-Volt Line—Ellwood City Y trolling these connections are interlocked to prevent themotors being thrown direct on the full voltage when start-ing up from rest. TRANSMISSION LINE The working potential of the three-phase transmissionis 13.200 volts and the frequency 60 cycles per second. January 16, 1909.] ELECTRIC RAILWAY JOURNAL 95 The three wires are arranged in the form of an equilat-eral triangle, with sides 30 in. in length. An aluminumwire built up of seven strands and having a current car- 1 24 > - -30M

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Author Internet Archive Book Images

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