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Re: Soft transformer turn on without a variac
Original poster: davep <davep-at-quik-dot-com>
>Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>
>Would this be true even if the variac output was set to zero when first
The surge results, largely, from the lack of inductance,
since flux had not built up yet.
> > 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