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Electrical1948
Electrical
Hi all,
In the IEC standards for transformer and motors the following formula is provided for calculating the resistance at temperature Θ2:
R2/R1 = (Θ2 + 235) / (Θ1 + 235)
235 = copper
In University I learned the following equation: R2/R1 = (1 + 𝛼(Θ2Θ1)
What is the difference?
In the IEC standards for transformer and motors the following formula is provided for calculating the resistance at temperature Θ2:
R2/R1 = (Θ2 + 235) / (Θ1 + 235)
235 = copper
In University I learned the following equation: R2/R1 = (1 + 𝛼(Θ2Θ1)
What is the difference?