Hi Resitance Short
Hi Resitance Short
(OP)
Anyone want to give a shot at explaining a common thermographic term in equation form? The term "hi-Resistance-Short" is used to describe a localized hot spot on electrical contacts/connections. Trying to explain this term litterally as a function of common electrical laws seems rough, or I missed a point. Any help appreciated.





RE: Hi Resitance Short
TTFN
RE: Hi Resitance Short
We often have high resistance connections which show up as hot spots.
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RE: Hi Resitance Short
Power(heat)= I*I*R (sorry I can't write squared symbol)
Now R is increased so Heat is increased causing more heat and oxidization and more increase in R and so on in this regenerative action.
Maged A. Mohamed
http://magedm.freeyellow.com
http://www.magedsoft.com
RE: Hi Resitance Short
It looks like I looked too deep. The answer is not with Ohm's Law but in the power equation and perspective. The hot spot(high resistance short)is an unintentional load on the current loop that affects resistance and source current and therefor power measured at the source. Thanks to all for your response.
RE: Hi Resitance Short
Maged A. Mohamed
http://magedm.freeyellow.com
http://www.magedsoft.com