Average breakdown voltage at 20°C
Calculation of Breakdown Voltage (Test acc. to IEC 60851.5.4.2, cylinder)
| Calculation of average value Ds | Example | ||
|---|---|---|---|
| Ds=t*Vµ(volt), with Ds : breakdown voltage t : increase with insulation, t = da - dnom, with da : outer diameter dnom : bare wire diameter Vµ : Volt per micron insulation | Test with cylindrical electrode dnom = 0.071mm (41 AWG) da = 0.083mm t = da - dnom = 0.083 - 0.071 = 0.012mm = 12 µm Vµ = 220 V/µm, therefore Ds = 12µ * 220 V/µ = 2,640 V | ||