How to calculate the IDMT Curves for MiCOM and SEPAM relays

Issue
Need to know how to calculate the IDMT curves for the MiCOM and SEPAM relays

Product Lines
MiCOM & SEPAM

Environment
Tripping IDMT Curves

Resolution
Attached are the two tools to calculate the IDMT Curves for the all the MiCOM and all the SEPAM relays.
Note: The tools are not interchangeable.  Unprotect sheets to work with formulas.  Charts are not included.

Conversion of TMS (Time Multiplier Setting) to Time delay (seconds):

Publicerad för:Schneider Electric Sverige