File:B&O RR powerhouse.jpg
没有更高的分辨率。
B&O_RR_powerhouse.jpg （600 × 415像素，文件大小：107 KB，MIME类型：image/jpeg）
摘要
| 描述 |
English: 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. |
| 日期 | |
| 来源 | reprinted in the Baltimore & Ohio Magazine, April, 1940. From collection of User:JGHowes. |
| 作者 | Baltimore and Ohio Railroad |
许可协议
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原始上传日志
Transferred from en.wikipedia to Commons by Wdwd using CommonsHelper.
The original description page was here. All following user names refer to en.wikipedia.
- 2007-10-19 13:43 JGHowes 600×415× (109427 bytes) {{Information |Description=Powerhouse for the [[Baltimore Belt Line]] of the [[Baltimore and Ohio Railroad]], part of the first mainline [[Railway electrification system|railroad electrification]] in 1895. Photo from 1910, when the B&O was still using the
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| 日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
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| 当前 | 2011年6月24日 (五) 16:45 | | 600 × 415（107 KB） | File Upload Bot (Magnus Manske) | {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Powerhouse for the en:Baltimore Belt Line of the en:Baltimore and Ohio Railroad, part of th |
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