> On Jan 4, 2022, at 7:08 PM, Jonathan Chapman via cctalk
> wrote:
>
>> much of it related to Niagara Falls and other power systems
>> modeled after it.
>
> The IIRC oldest US generating station still in operation (on original
> hardware anyway) is at Mechanicville, NY. It is hydroelectric
On 1/4/22 4:04 PM, Grant Taylor via cctalk wrote:
> I knew about 50 and 60 Hz and DC growing up. I learned about 400 (?) Hz
> being used in military applications about a decade ago. 25 Hz was a
> surprise to me over the last year or so. I read some interesting
> things, much of it related to Ni
> The IIRC oldest US generating station still in operation (on original
> hardware anyway) is at Mechanicville, NY.
Well that ruined my evening, Wikipedia says the generating station now uses the
power to mine bitcoins, because it's more profitable than selling it to the
public grid.
Thanks,
J
> much of it related to Niagara Falls and other power systems
> modeled after it.
The IIRC oldest US generating station still in operation (on original hardware
anyway) is at Mechanicville, NY. It is hydroelectric and originally fed 40 Hz
AC to Schenectady. They just sped up the alternators when
On 1/4/22 4:46 PM, Chuck Guzis via cctalk wrote:
In fact, in my neighborhood, each house has a big green disconnect
box on the street fed by 3-phase 11KV. Every so often, the utility
sends out a notice that they'll be "re-balancing" the distribution.
I imagine that that involves nothing more
On 1/4/22 3:14 PM, Jonathan Chapman wrote:
>> High-leg delta is independent of open- or closed-delta.
>
> That's correct.
>
>> Open delta uses two single-phase transformers primaries connected to
>> phases AB and BC.
>
> A to C is also valid, presumably it's rotated if there's a lot of open delt
