Electrical schematic for GMG-158 amplidyne excitation

Discussion of products from the American Locomotive Company. A web site with current Alco 251 information can be found here: Fairbanks-Morse/Alco 251.

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Electrical schematic for GMG-158 amplidyne excitation

Postby Fred Walter » Thu Aug 13, 2015 2:29 pm

There was an older discussion of similar to this in 2011 or 2012. Since I didn't find it I started a new topic.

I'm looking for a schematic/ manual for an Alco 251 GE generator and GMG-158 amplidyne. I am looking for the values of the resistors used for powering the amplidyne shunt field. They appear to be 22 and 88 ohms, but I can't determine how they are connected. The S6 may be the same.

Thanks
Fred Walter
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Re: Electrical schematic for GMG-158 amplidyne excitation

Postby Alcoman » Sat Aug 15, 2015 7:00 pm

I have a schematic for the S-6 on CD if you are interested. I can also make you a print copy. The CD is $35.00 and the print copy which is 4 large sheets is $100.00
Contact me off list if you want these.
John
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