Image: B&O RR powerhouse
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Description: Powerhouse for the Baltimore Belt Line of the Baltimore and Ohio Railroad, part of the first mainline railroad electrification in 1895. Photo from 1910, when the B&O installed these rotary converters having a combined capacity of 5,000 kw, used to convert 13,200-volt, 3 phase, 25-cycle AC to 675 volts DC. In 1936, these rotary converters were replaced by mercury arc rectifiers.
Title: B&O RR powerhouse
Credit: reprinted in the Baltimore & Ohio Magazine, April, 1940. From collection of User:JGHowes.
Author: Baltimore and Ohio Railroad
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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