Re: VSD's and Line Reactors

> Why do they "highly recommend" it? Can they give you a precise

answer?

> Is it because they make more money on this part?

As far as I can tell, this is the answer. in order to sweeten the
decision, they extend the warantee of the VSD by one additional year
if the Line Reactor is used.

>
> I have never used a line reactor on a VFD (also known as VSD,

although

> that term
> includes mechancal as well as electronic variable speed drives).

I sold VSD's many years ago, and stopped just as the mrket saturated
and the IGBT (sp?) drives started comming out. We sold for the last
6 step (Graham) manufacture when everybody was PWM.

I had not heard of line reactors but did over power factor units to
bring the drives close to unity.

From what I read, it looks like protection of external devices as
well.

Dave