Hello Chris,

Sounds like you were cheated, just smoke, no blown apart transformers.
No burst phase correction capacitors. That's the whole objective to
leaving out the fuses...

Sorry to hear that your project was terminated in this fashion. I know
of the expense involved having worked around power equipment for years.
Lost an EMC Disk frame to bad phases in a data center that was expensive
as well, but just 1 EMC frame (fuses work).

Hope things improve.

Vern

Chris Loiacono wrote:
>
> >People that build commercial sized inverters, welding equipment, plasma
> >cutters...etc. Might have a simulation package. I was just suggesting a
> >semi real world test jig for 3 phase applications.
>
> If I don't find one soon, I may just try to put one together myself.
>
> >In the past I have worked with some very large Inverters or UPS units
> >(200 KW) these used triacs for switching. Something some how caused a
> >phase inversion and a triac (500 Amp variety) switched out of
> >phase....it was a mess to say the least, and I lost part of my data
> >center for a while...
>
> I had someone wiring a similarly sized proto over the phone. We took lunch
> breaks and returned to the phone an hour later.
> The poor fellow was a bit sullen & withdrawn when he told me that he had
> started again without waiting for my direction.
> In his infinite wisdom he thought that he might swap some wires around,
> thinking "it might work better like this"
> Needless to say, the cost of the custom SCR packs went up in smoke
> ($thousands) as did some distribution hardware that supplies the entire
> street. Too bad he also omitted the fuses.
> I saved the control board as a memento. And to think - this guy was about to
> be let go last week and I went to bat for him - successfully.....recounting
> this story has me wondering if I made a mistake....
>
> Chris
>
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