Free power-quality tools

• COMTRADE to CSV converter

  Convert a COMTRADE record (.cfg + .dat, .cff or .zip) to a CSV file that opens in Excel, Python or MATLAB, in primary or secondary values. Free, in your browser: nothing is uploaded.

• COMTRADE file checker

  Check a COMTRADE record against IEEE C37.111 before you rely on it: revision, channels, scaling, sample count, time stamps and anything the reader had to assume. Free, in your browser.

• ITIC (CBEMA) curve checker

  Enter a voltage and a duration and see where the disturbance falls on the ITIC (CBEMA) curve and SEMI F47, with its IEEE 1159 category. Free, in your browser.

• Sample COMTRADE files

  Four synthetic records to download as .cfg + .dat or .cff: a ground fault, two sags and a harmonics record.

• COMTRADE viewer

  Open your own record in the browser: waveforms, RMS, sags and swells, harmonics, phasors and ITIC.