niteflyer46
Member
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- Celina, TX, USA
Is there a formula or table for temperature correction of ac inductive reactance?
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ambient temprature correction for ac inductive reactance
- Thread starter niteflyer46
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- Placerville, CA, USA
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- Retired PV System Designer
Yes. The correction factor is 1.Is there a formula or table for temperature correction of ac inductive reactance?
The resistive portion of the complex impedance will change in the same ratio as the DC resistance, but the inductive portion can only change as a result of the mechanical expansion of the wire. I would consider that negligible.
winnie
Senior Member
- Location
- Springfield, MA, USA
- Occupation
- Electric motor research
If the inductor is on some sort of core, then the permeability of that core will likely change with temperature, changing the inductance and the inductive reactance.
There will be no simple formula for this; you will need get data for the specific material involved.
-Jon
There will be no simple formula for this; you will need get data for the specific material involved.
-Jon
Carultch
Senior Member
- Location
- Massachusetts
Is there a formula or table for temperature correction of ac inductive reactance?
The NEC doesn't require you to temperature correct for resistance/reactance. The values you'll find for AC and DC resistance in Chapter 9 for your voltage drop calculations are based at 75C. And the chance that any properly sized wire will operate continuously at a hotter temperature than that, is vary rare.
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