Re: DC charging reactor

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "jimmy hynes by way of Terry Fritz <twftesla-at-qwest-dot-net>" <chunkyboy86-at-yahoo-dot-com>


you would slice the core as if you were cutting an airgap, so the flux runs
perpindicular to the slice. in your case it would be 1 square inch (1"x1"iron
bar). hope this helps. 

 Tesla list 
>
> wrote:  
> Original poster: "Daniel Barrett by way of Terry Fritz " 
>
> > Original poster: "D.C. Cox by way of Terry Fritz "
>
> > 
> > 
> > Imagine slicing through your core with a knife. Looking at the end view of 
> > the core you just sliced through, the will be looking at the cross 
> sectional 
> > area, ie, cutaway view. If the core measures 5 inches wide x 4 inches 
> high 
> > then the 5 x 4 in = 20 sq. inches of cross sectional area. 
> > 
> > This is what they are talking about --- the rectangular or square cross 
> > section area of the core material. The larger the cross sectional area 
> the 
> > more lines of magnetic flux lines that can be produced, and a higher 
> > magnetic flux produces more power per unit area. 
> >
>
> Hmmm. I'm still having tro! uble picturing this in my head, the part about 
> slicing through the core. There are about 6 dimentional ways of doing this 
> and I'm not sure which way you mean... If I throw out an example can you 
> elaborate? 
> For my reactor I cut a MOT core into its 'E' and 'I' sections. I sawed 
> the middle leg out of the E, turning it into a 'C'. I split the C into 2 
> piles of laminations and stuck these end to end forming a rectangular ring. 
> It measures 6.5 inches long by 4.5 inches wide. The ring width is about 1 
> inch and the laminiations are 1 inch thick. So it's as if I took a 1"x1" 
> iron bar and bent it 90 degrees four times forming a 4.5 x 6.5 rectangle. 
> There is a winding on each of the 6.5" sections. 
> So is the 'cross sectional area' simply 6.5 x 4.5? Surely the thickness 
> of the laminations (read overall iron mass) has to figure into this 
> somewhere. Help, I'm geometrically challenged and I cant get up ;)
>
> Smoke test says it handles 1400KVA witho! ut saturation...
>
> db
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> ! 
> JImmy
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