IEC 60909 Ed. 1.0被替代

This standard is applicable to the calculation of short-circuit currents: -in low-voltage three-phase a.c. systems, -in high-voltage three-phase a.c. systems with nominal voltages up to 230 kV operating at nominal frequency (50 Hz or 60 Hz). This standardized procedure is given in such a form as to facilitate as far as possible its use by non-specialist engineers.

IEC 60909-0 Ed. 1.0

SS 421 01 68 Ed. 1 (1991) - Identical

UNE 21239:1994 - Identical

HD 533:1991 - Similar

VDE 0102 SUPP 2:1992 - Identical

BS 7639:1993 - Modified

VDE 0102 SUPP 1:2002 - Identical

VDE 0102:2002 - Similar

BIS IS 13234:1992 (R2017) - Identical