Select appropriate wire gauges based on current handling requirements:
In Excel terms, for a primary winding: [ N_p = \fracV_p4.44 \times f \times B_m \times A_e ] transformer design calculation excel
Pcore = k × f^α × Bmax^β × mass_core Use manufacturer data for k, α, β (e.g., for silicon steel: k~1.5, α~1.5, β~2.4). Select appropriate wire gauges based on current handling
: Ratio of copper area to total window area, often estimated as Window Area ( cap A sub w If the calculated temperature rise exceeds standard limits
a1=I1Ja sub 1 equals the fraction with numerator cap I sub 1 and denominator cap J end-fraction
Furthermore, a simplified thermal model is often included. By calculating the surface area of the tank and the total heat generated, the spreadsheet estimates the average temperature rise of the oil and windings. If the calculated temperature rise exceeds standard limits (e.g., $55^\circ C$ rise for oil), the engineer must loop back to Phase II to increase conductor size or reduce current density, thereby reducing heat generation.