SANS 60909-3 : 1ED 2010(R2015)
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
SHORT-CIRCUIT CURRENTS IN THREE-PHASE A.C. SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORT CIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH
12-11-2023
11-23-2012
Describes procedures for calculation of the prospective short-circuit currents with an unbalanced short circuit in high-voltage three-phase a.c. systems operating at nominal frequency 50 Hz or 60 Hz, i. e. currents during two separate simultaneous line-to-earth short circuits in isolated neutral or resonant earthed neutral systems; partial short-circuit currents flowing through earth in case of single line-to-earth short circuit in solidly earthed or low-impedance earthed neutral systems.
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