I have modfied and improved the T/C curve presented in Time-Current Curve Part 2 – Discrimination. The changes are:

  1. Each curve can now be set to any curve type
    • Standard Inverse
    • Very Inverse
    • Extremely Inverse
    • Long Time Inverse
  2. Added earth fault curve – Definite Time (DT). Settings are
    • Earth Fault Setting as a factor of In (xIn)
    • Earth Fault High Setting as a factor of In (xIn)
    • Earth Fault Time Setting

A typical curve is shown below:

Please take time to read the Disclaimer before downloading.

Download:Time-current-curves V2