CYMCAP-SCR, Short Circuit Cable Rating

Demo Version

The Short Circuit Cable Rating (SCR) add-on module to CYMCAP is dedicated to the rating of cables for short circuit currents. The implemented method is described in the IEC Standard 949 (1988) "Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects".

CYMCAP computes both adiabatic and non-adiabatic ratings. CYMCAP-SCR offers two possibilities according to the known input data:    • Compute the maximum short-circuit current that a cable component can carry given the short circuit time together with the initial and final temperatures.    • Compute the final temperature that a given cable component will reach for a specified short circuit current and initial temperature. The short circuit rating can be computed for up to the five metallic layers in the CYMCAP model:    • Conductor    • Sheath    • Sheath Reinforcement    • Concentric Neutral / Skid Wires    • Armour