Hi Stuart:
Yes, especially if wound on a laminated core like a 3 phase transformer.
In fact one could probably use the high current windings of a small
3 phase transformer. It would take a bit of research to chose the
correct wire size, windings turns and etc to match your VFW and motor.
Don
On Tue, Jul 27, 2010 at 10:46 PM, Stuart Stevenson <[email protected]>wrote:
> I have seen reactors used to quiet a vfd. A reactor is merely a coil of
> wire.
>
> On Tue, Jul 27, 2010 at 3:57 PM, Andy Pugh <[email protected]
> >wrote:
>
> > On 27 July 2010 21:43, Don Stanley <[email protected]> wrote:
> >
> > > The solution was a 5% KDR filter from TCI in Milwaukee Wi in the VFD
> > > output.
> >
> > I suspect some ferrite beads on the output lines helped with my rather
> > troublesome VFD noise problem. Though I also added an input filter and
> > shielded power cables at the same time, so don't have the data to
> > deconvolve the various effects.
> >
> > The input filter was initially troublesome, tripping the ELCB in the
> > main supply. The solution I found was to power the VFD through a
> > zero-crossing SSR controlled by EMC2. As the mains voltage is always
> > zero at switch-on there is no current spike into the filter caps, and
> > no tripping of the breaker. So far it has been a 100% success for
> > about a year.
> >
> > --
> > atp
> >
> >
> >
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>
> --
> dos centavos
>
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