David Dahle

David Dahle

Posted on 07/10/2015


Photo taken on June 29, 2015


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Otter Tail 'farm line' spec

Otter Tail 'farm line' spec
Here's the spec sheet for their 2400V farm lines - I'm assuming this is what the lines near Herman, MN looked like (although I assume all have been long since rebuilt to 12.5kV 4-wire Y). This particular spec was used on the Bloom, ND farm line - but even that one has been redone to more modern specs.

I also found a series of blueprints done up by the Minnesota Electric Light & Power Co. (not related to Minnesota Power) showing their 33kV specs, substation design, etc.

(SHSND files)

Tony Glen, Lewis Perkins, Qwerty Cody, Justin S and 2 other people have particularly liked this photo


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Power Lines
Power Lines
Nice find there. Looks like this was drawn up in 1925...seems a bit late for those "knuckle buster" cutouts featured in the pictures.

Do you know of any surviving poles of this generation anywhere?
2 years ago.
David Dahle has replied to Power Lines
None. They established grounded Y as their standard in the mid '50s and Jamestown (just west of Bloom) was one of the first to have its distribution system rebuilt from 2400 delta to 4160V Y.
2 years ago.
Tony Glen
Tony Glen
Reminds me of this line Summerland Electric Division 4.8kV - Summerland, BC
2 years ago.
David Dahle has replied to Tony Glen
I see the similarity!
21 months ago.