17.2kV Overhead Distribution Transformer Standard
17.2kV Overhead Distribution Transformer Standard
(OP)
The utility that I work for has finally decided to convert our existing 4.16kV Overhead System to 17.2kV. One of the first steps is the need to create a 17.2kV Overhead Distribution Transformer Standard in order to go out to bid. Since this is a somewhat unique primary voltage, I was wondering if any U.S. utility personnel on this site have an existing standard they could share with me for this voltage level.
Thanks in advance.
Thanks in advance.






RE: 17.2kV Overhead Distribution Transformer Standard
RE: 17.2kV Overhead Distribution Transformer Standard
RE: 17.2kV Overhead Distribution Transformer Standard
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RE: 17.2kV Overhead Distribution Transformer Standard
Stick with a 'regionally common' voltage for your general area if you want to leverage purchasing power and existing knowledge bases.
You mentioned '4160' and 'U.S.', so I would expect that 15kV or 25kV (perhaps nominally 14400V L-G or 24970V L-L) would be far better choices.
RE: 17.2kV Overhead Distribution Transformer Standard
Other than that, I'd suggest contacting Cooper or other manufacturers. I know Cooper has "sample" specs that would be a good starting point. You'll have to weed out anything that is overly proprietary, of course.
You'll have to decide if you're using single-bushing or two-bushing configuration, what accessories you want, and most importantly, what efficiency you're willing to pay for.
FWIW, I agree (mostly) with other comments on voltage level. I've never seen it, but if it's common in your area, then maybe you're OK. In the Northwest we see 20.8 kV and some 23 kV - in addition to normal hodgepodge of 12 kV, 12.47 kV, 13.2 kV, and 13.8 kV. If you're going to jump over 15 kV level, you might as well jump up a little higher than 17.9. You'll get more kVA per $$.