| PrecisionMechanical 2006-02-24, 6:21 am |
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"Cliff" <Clhuprich@aol.com> wrote in message
news:h4atv1l04096m68eletbibeud76p4krcq8@4ax.com...
> On Thu, 23 Feb 2006 22:06:32 -0800, "PrecisionMechanical"
> <precisionmachinist@hotmail.com> wrote:
>
>
> But how does it work? Is it measuring true power or just amps?
> Whatever it is you get billed ...
>
in[color=darkred]
>
> While true do you really need electric heat?
>
outside[color=darkred]
>
> You could pay for air conditionig too ...
>
the[color=darkred]
>
> Problem can arise when the phases shift .... always a problem for large
> inductive power users or those near an undersized transformer.
>
> http://home.att.net/~waterfront-woo...seconverter.htm
> http://www.lmphotonics.com/pwrfact.htm
>
> Remember industrial places with three lighbulbs across the power lines?
> When one got dim ... or recall banks of capacitors, switched or
unswitched?
>
What gets really inneresting is where you drop the center tap of a wye
feed...your now going delta, w/ only 3 wires......
And then you pick it up again with a delta / to / wye
transformer........now, if you load the fourth wire you'll get all kindsa
wierd shit, phase/ phase on the HV side if you continue w / delta and only
using the new wye connection as "neutral".....for lighting loads, that
fluctuate....or somesuch....
This is never reccomended in the books concerning facility power
distribution--however, its quite commonplace at the utility level--and
appears to be a constant balancing act on their part.
--
SVL
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