Re: potential gain vs. power in TC systems

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

I want one :-))  Could be useful for 240V applications here 
perhaps.  What is the max V rating??  I like the CT modification 
idea.  Maybe I need to take mine apart.  I wonder if one could use 
two US style meters in a balanced 240V application where one is fed 
the voltage from one 240 side and neutral and the other is fed the 
other 240 volt side and neutral.

Gerry R.

> Original poster: Steve Conner <steve@xxxxxxxxxxxx>
>
> Hi Gerry,
>
> Remember we use 230V over here. The UK version of the Kill-A-Watt is 
> rated at 230V and 15A which is 3750VA. It looks very similar to 
> pictures that Terry posted of the US version, apart from having a UK 
> socket and plug pins, and seems to be made by the same Chinese 
> company, Prodigit, so I call it a Kill-A-Watt. The Prodigit model 
> number on it is 2000MU.
>
> A while back, I tested it against an old-fashioned electromechanical 
> wattmeter on a DRSSTC load, and found that the two meters agreed 
> within a few percent, even with the lousy power factor. I posted the 
> results here.
>
> It has an overload bleeper that sounds if you ever peg the A/D 
> converter for the current, but I've never heard it sound.
>
> If you want to measure even more power, it would be trivial to 
> modify the meter with a 10:1 current transformer across the internal 
> shunt, so it can read up to 37.5kVA :^)
>
> Steve Conner
> http://www.scopeboy.com/
>
>
> Tesla list <tesla@xxxxxxxxxx> wrote:
> Original poster: "Gerry Reynolds"
>
> Hi Steve,
>
> 3.3KW with a kill-a-watt meter??? Mine has a max rating of 125Vac
> and 15A for 1875VA. Are there larger ones out there???
>
> Gerry R.