SCADA (was Re: Help to identify a computer?)

[Chuck Guzis]

On 17 Feb 2007 at 22:14, woodelf wrote:

> Lets not forget EDISON promoted DC as well.
> When you think about it, the RPM of the generator
> is the limiting factor. You can't have your moving
> parts move too fast.
> Or too slow -- hamster powered night light.
> http://www.otherpower.com/hamster.html

Oh, the steel mill had 250VDC distribution, as well as higher 
voltages for the overhead cranes and welders.  

I once witnessed a plant electrician mistakenly wire a 120v 60Hz 
water cooler to 250 VDC.  The ensuing meltdown was fun to watch.  His 
boss told him to pack it back up and return it to stores with a tag 
saying something to the effect that it was a manufacturing defect.

Cheers,
Chuck