Transformers and Power Supplies
Transformer Copper Loss Calculator
Use Transformer Copper Loss to the copper loss calculation. The loaded example shows the arithmetic with practical electrical units.
Enter values for copper loss
Use one consistent electrical operating case for all fields.
How Transformer Copper Loss works
The arithmetic follows loss = I²R. Transformer Copper Loss uses Winding current, Winding resistance to report Copper loss.
With the loaded values, copper loss evaluates to 18.00 W. Isolate a single uncertain input during sensitivity checks.
Inputs for Transformer Copper Loss
Winding current and Winding resistance belong to Transformer Copper Loss. Keep source units with winding current.
Loaded numbers demonstrate the calculation; they are not equipment recommendations. Replace them with values from the case being evaluated.
- Winding current
- Example entry: 10 A.
- Winding resistance
- Example entry: 0.18 Ω.
Reading the Transformer Copper Loss result
This output represents Transformer Copper Loss. For secondary current, use Transformer Current Calculator.
The worksheet isolates arithmetic; final ratings need a broader equipment check.
Measurement and units
Check component ratings, isolation requirements, temperature, waveform, and manufacturer limits. Check prefixes on winding current. Use Linear Regulator Heat Calculator.
Preserve the measurement basis when testing alternatives.
Limits of this calculation
Winding resistance rises as the transformer warms. Compare this result with Current Transformer Burden Calculator when cT burden is also needed.
The result reflects the formula scope, not every connected component. Unentered effects remain outside Transformer Copper Loss.
A useful Transformer Copper Loss comparison
Record copper loss before testing a different winding current value.
Document the alternate winding current source.
Transformer Copper Loss record notes
Record source and operating details for winding current.
Retain raw copper loss beside its selected rating.
Questions about Transformer Copper Loss
What does Transformer Copper Loss calculate?
Transformer Copper Loss reports copper loss.
Can Winding current be zero?
For Transformer Copper Loss, measure any zero winding current directly.
Why can copper loss differ from measurement?
Winding resistance rises as the transformer warms. Recheck winding current.