GB/T 15544.4-2017
ActiveShort-circuit current calculation in three-phase a.c.systems—Part 4: Currents during two separate simultaneous line-to-earth short circuits and partial short-circuit currents flowing through earth
三相交流系统短路电流计算 第4部分：同时发生两个独立单相接地故障时的电流以及流过大地的电流
Application Summary AI generated
This standard specifies calculation methods for short-circuit currents during two separate simultaneous line-to-earth faults in three-phase AC systems, including the partial currents flowing through the earth. It is applied in electrical power system design and analysis, particularly for grounding system evaluation and protection coordination in high-voltage transmission and distribution networks. The standard ensures accurate fault current determination for safety and equipment sizing in utility and industrial power systems.
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