PD IEC TR 60909-1:2002 Short-circuit currents in three-phase a.c. systems. Factors for the calculation of short-circuit currents according to IEC 60909-0
2002PD IEC TR 60909-1:2002 Short-circuit currents in three-phase a.c. systems. Factors for the calculation of short-circuit currents according to IEC 60909-0