David Dahle

David Dahle

Posted on 07/20/2015


Photo taken on July 19, 2015


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12.5kV
34.5kV


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Northern States Power - Sioux Falls, SD

Northern States Power - Sioux Falls, SD
One of two 34.5/12.5kV step-downs powering a loop serving Garretson, Baltic, and Sherman. I haven't found the other one yet, but it's probably even on the same 34.5kV line that serves my block!

I should add - all 9 of these cans are 500kVA apiece!

Sean Kinnier, Lewis Perkins, Tony Glen and 2 other people have particularly liked this photo


Comments
Justin S
Justin S
So at one point did they ditch the 69 kV in favor of 34.5 kV? I wonder why they downgraded.

I've located another step down setup with three cans per phase- Bongards, MN
goo.gl/iLQIXL
2 years ago.
David Dahle has replied to Justin S
There used to be just a 13.8/12.5kV stepdown along this road before the 34.5kV distribution system appeared. This afternoon I decided to follow the 12.5kV line down from SD115 back towards Sioux Falls to see where the other stepdown was and found 2 more 34.5/12.5kV padmounts - and now realize the Renner Junction sub put out 12.5 and not 13.8, which falls right into our observations as to the usage of the two voltages.

So I was able to confirm that Renner, Crooks, Baltic, Dell Rapids, Sherman, and Garretson all run on 12.5kV - fed from no less than FOUR sources (there were only two originally - the Dells and Renner Junction subs).
2 years ago.
Justin S has replied to David Dahle
Gotcha. At first when I seen this I didn't realize how it was all tied together but it makes sense now. I actually followed that 12.5 kV line on Google earth last night and seen what looked like the two padmounts you found.
2 years ago.
David Dahle has replied to Justin S
One on 72nd St. North and the other near the Renner / Crooks exit.

Renner Junction sub was near NW corner of the I-29 / I-90 interchange.
2 years ago.