Peter C. Thompson via EV wrote:
I've just spent an entire week working with the standard
responsible for this, so all of this is VERY fresh in my mind. :)
Excellent! I'm delighted to see your company thinks it is important.
Though, I still worry about "unintended consequences".
When I was working with a high-power switchmode power supply, one of the
techs happened to be wearing a wristwatch with a metal band. He reached
over the supply to adjust something, and his wrist watch band got hot!
The flux leakage from the 50kw transformer was tiny -- maybe 0.1%. But
0.1% of 50kw is 50 watts -- easily enough to overheat the band. There
was no observable change in the operation of the supply at all. If he
hadn't jerked his hand away, he would have gotten burned!
I've heard of similar situations with people wearing rings or other
metal jewelry. There are also cases of burning up parts or traces on PC
boards in phones etc. due to stray EM fields. Even a tiny power loss
that's too small to detect can have serious consequences.
--
Education is the most powerful weapon which you can use to change the world.
-- Nelson Mandela
--
Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm
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