Re: Using 240VAC on 140VAC Varic

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

Original poster: Finn Hammer <f-h-at-c.dk> 

Brett,

I have 2 140 Volts variacs in my 240V power controller.

http://home5.inet.tele.dk/f-hammer/tesla/ambassador/troller/troller.htm

They are ganged, and you can do the same.

It is not necessacary to actually join the motion of the 2 variacs, you can 
just turn them one by one.
Hook them up like this:


Please view in a fixed-width font such as
                  Courier.





            +----------9 <----------------
            |          9            ^
            |          9            |
            |          9            |
            |          9            |
            |          9          0-280V
     -------)----------9            |
    ^       |          9            |
    |       |          9            |
    |       |                       v
    |       +----------9 <-----------------
   240V                9
    |                  9
    |                  9
    |                  9
    v                  9
    -------------------9
                       9
                       9
Cheers, Finn Hammer



Tesla list wrote:
>Original poster: Brett Miller <brmtesla2-at-yahoo-dot-com>
>Dan,
>I have two 20 amp 140VAC variacs now.  One General
>Radio non enclosed component variac, and one enclosed
>generic brand with voltmeter, breaker and recepticle.
>Although I would hate to ruin the GR I really will
>need a 240VAC variac in the somewhat near future as I
>plan on testing a secondary wound on a 12 inch
>Sonotube former I have sitting in my lab.  It would be
>nice to be able to run a 4 or 6 pack MOT stack of 240
>with a variac that didn't weigh (or cost) as much as
>the 240 variety.  I would definately be willing to
>give it a try, especially if others have done it in
>the past without smoking their windings.
>-Brett
>
>--- Tesla list <tesla-at-pupman-dot-com> wrote:
>  > Original poster: "Mccauley, Daniel H"
>  > <daniel.h.mccauley-at-lmco-dot-com>
>  >
>  > Has anyone tried running 240VAC on a variac rated
>  > for 0-140VAC ?
>  > I know there are issues, but just curious if anyone
>  > actually tried it.
>  >
>  > Thanks
>  > Dan
>  >
>  >