CEI EN 60909-3 : 2011

INTRODUCTION
1. Scope and object
2. Normative references
3. Terms and definitions
4. Symbols
5. Calculation of currents during two separate
   simultaneous line-to-earth short circuits
6. Calculation of partial short-circuit currents
   flowing through earth in case of an
   unbalanced short circuit
7. Reduction factor for overhead lines with
   earth wires
8. Calculation of current distribution and reduction
   factor in case of cables with metallic sheath or
   shield earthed at both ends
Annex A (informative) - Example for the calculation
                       of two separate simultaneous lineto-
                       earth short-circuit currents
Annex B (informative) - Examples for the calculation
                       of partial short-circuit currents
                       through earth
Annex C (informative) - Example for the calculation
                       of the reduction factor r1 and the current
                       distribution through earth in case of a
                       three-core cable
Annex D (informative) - Example for the calculation
                       of the reduction factor r[3] and the current
                       distribution through earth in case of three
                       single-core cables
Annex ZA (normative) - Normative references to
                       international publications
                       with their corresponding
                       European publications