This standard contains standardized procedures for the calculation of the effects of the short-circuit currents in two sections as follows:
Section One — The electromagnetic effect on rigid conductors and sl?ck conductors.
Section Two — The thermal effect on bare conductors.
Only a.c. systems for rated voltages up to and including 72.5 kV are dealt with in this standard.
SIS SS IEC 865:1987 history
1987SIS SS IEC 865:1987 Calculation of the effects of short- circuit currents