prEN 60909-3

Short-circuit current calculation in three-phase a.c. systems - Part 3: Currents during two separate simultaneous single phase line-to-earth short circuits and partial short-circuit currents flowing through earth

Scope

The object of this standard is to establish practical and concise procedures for the calculation of line-to-earth short-circuit currents during two separate simultaneous single phase short circuit and partial short-circuit currents through earth from electrical installations, leading to conservative results with sufficient accurate.