cctalk Digest, Vol 88, Issue 2

[Jonathan Chapman]

One of the top Google results:

https://www.engineeringradio.us/blog/2012/02/the-open-delta-three-phase-service/

Really really, there's only two pigs on the pole. And yet, delta power, though at a lower rating than transformer nameplate (vs. if you had three).

Thanks,
Jonathan

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Tuesday, January 4th, 2022 at 14:56, Grant Taylor via cctalk <cctalk at classiccmp.org> wrote:

> On 1/4/22 8:52 AM, Jonathan Chapman via cctalk wrote:
>
> > Indeed. This is not corner-grounded delta. Once you figure out open
> >
> > delta, look at dog-leg.
>
> I did some brief reading on open delta and now think that it requires
>
> three lines, independent of ground. So I fail to see how open delta
>
> would be any benefit save for a simpler transformer (fewer coils) or
>
> fewer transformers. It seems as if you would have the same line and
>
> insulator cost as more common (closed) delta.
>
>
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Grant. . . .
>
> unix || die