File:Image from page 112 of "Electric railway journal" (1908) - 14574583790.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—Span Construction Near New Castle The switchboard in each substation comprises two 400-kw, 13,200-volt synchronous motor and exciter panels; two400-kw, 1200-volt, d.c. generator panels; two 400-kw, 1200-volt, d.c. feeder panels, and two 1500-volt voltmeters andbracketSi The three-phase lightning arresters are of the multiple- i 94 ELECTRIC RAILWAY JOURNAL. [Vol. XXXIII. No. 3. gap type. All of the oil switches in the substations are The armatures of the d.c. generators are connected inof form K-4. series, with one terminal grounded, giving 1200 volts on The synchronous motors are started up on the a.c. side the feeder bus to which the other terminal is connected.

Text Appearing After 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.

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