In the second part of their article, Vitaly Gurin and Marius Grisaru explore the impact of voltage rise rate and gap spacing on the coefficients of variation (CV%) of transformer oil breakdown voltage (BDV). Studies suggest that the CV% decreases linearly with higher voltage rise rates and linearly with the logarithm of gap spacing, highlighting the importance of consistent reporting of CV% in insulation studies.
The statistical scatter of breakdown voltages of transformer oil – Part II
Vitaly Gurin and Marius Grisaru explore the impact of voltage rise rate and gap spacing on the coefficients of variation (CV%) of transformer oil breakdown voltage.
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