David Dahle

David Dahle

Posted on 01/25/2014


Photo taken on January 25, 2014


See also...

The Powerline Graveyard The Powerline Graveyard



Keywords

13.8kV
CLF01
SOS05
SOS 13.8kV


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Xcel Energy - Sioux Falls, SD

Xcel Energy - Sioux Falls, SD
A look towards the north end of the rebuilt portion of the South Sioux 4160V system. The dividing switch between the South Sioux and Cliff Ave. systems is visible, as is the relatively unmolested Cliff Ave. 4160V system. Yes, the pole in front is that one that used to have the wood-pin arm and L-M transformer!

The line crossing the NSP line is actually a municipal line (circuit #2, I believe, and this section was one of the last parts that was rebuilt from 2400 to 13.8kV).

danny electric, Power Lines have particularly liked this photo


Comments
Power Lines
Power Lines
Sad to see that old wood pin arm and the L-M can are gone. I always liked those! Does NSP/Xcel have any L-M's on their 13.8 kV system?
3 years ago.
David Dahle has replied to Power Lines
I think so, but haven't really thought to check the older parts of the 13.8 system in detail. Will keep an eye out for these.
3 years ago. Edited 3 years ago.
Power Lines has replied to David Dahle
It would be interesting to see what NSP's old standard for 13.8 was back in the day. I should get some pictures of some of CL&P's earliest 8/13.8kV multigrounded distribution some times--they had some odd stuff on it. Looks a LOT like old co-op stuff except for bigger insulators.
3 years ago.
David Dahle has replied to Power Lines
It seems that the late 4160V standard (wood cross braces) was adapted to 13.8kV by adding a second 6" disk and larger bowl insulators for the higher voltage, the major difference being a change in transformer mounting (directly to the pole or on brackets) and moving the neutral and secondaries below the transformer.

The next step up from 4160V was originally 23.9kV or 34.5kV.
3 years ago. Edited 3 years ago.