There was a download of RelayTrippingCurves-PRO 2.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular version among RelayTrippingCurves-PRO users is 1.0. The program lies within Education Tools, more precisely Science Tools. This tool was originally developed by PROTELECTSA. We recommend checking the downloaded files with any free antivirus.
From the developer:
Relay Tripping Curves-PRO2 is a software that allows calculating the mathematical equations of the characteristic curves of the overcurrent protections according to the different standards of the main manufacturers of protection relays that exist in the market and representing these curves in a chart with a Log-Log scale in a friendly and simple way.
You may want to check out more software, such as GenScn, Illusionae or Foucault, which might be related to RelayTrippingCurves-PRO.