Time-Series → Harmonic Spectrum (FFT)
Upload a measured or simulated waveform (CSV with time + voltage/current columns), run an FFT in the browser, and see the per-order spectrum compared to ENA G5/5 EHV planning levels. Heavier-duty cousin of the harmonics lab — works on real data.
Try sample
waveform *Time-series CSV with a header row — at least one numeric column.
Expected CSV format: a header row, one column with time (seconds), one column with the value (volts / amps / pu). The tool auto-picks the first two numeric columns and you can override. The FFT assumes the file contains a whole number of fundamental cycles — round-clip your data first if it doesn't.