Re: Soft transformer turn on without a variac

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Original poster: davep <davep-at-quik-dot-com> 


>Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>
>Hi Ed,

>Would this be true even if the variac output was set to zero when first
>turned on?
         Yes.

         The surge results, largely, from the lack of inductance,
         since flux had not built up yet.


>Gerry R
>  >
>  > A large current surge when the variac is connected to the line is quite
>  > normal, depending on the phase at which the switch or relay closes.  The
>  > bigger the variac the lower its resistance and the bigger the surge.
>  >
>  > Ed

-- 
         best
         dwp

.