Harmonic Distortion Calculator

Harmonic Distortion

Calculate total harmonic distortion (THD) in electrical systems from nonlinear loads such as VFDs, UPS systems, and LED lighting to assess power quality issues.

Fundamental Current (A)

3rd Harmonic (%)

5th Harmonic (%)

7th Harmonic (%)

11th Harmonic (%)

Formula

THD = sqrt(H3^2 + H5^2 + H7^2 + H11^2) x 100; Total RMS = I1 x sqrt(1 + H3^2 + H5^2 + H7^2 + H11^2); Neutral Current = I1 x H3 x 3 (triplen harmonics); K-Factor = 1 + sum(Hn^2 x n^2)

Frequently Asked Questions

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