IEC TR 60865-2:2015

FOREWORD
1 Scope
2 Normative references
3 Symbols and units
4 Example 1 - Mechanical effects on a 10 kV arrangement
   with single rigid conductors
5 Example 2 - Mechanical effects on a 10 kV arrangement
   with multiple rigid conductors
6 Example 3. - Mechanical effects on a high-voltage arrangement
   with rigid conductors
7 Example 4. - Mechanical effects on a 110 kV arrangement
   with slack conductors
8 Example 5. - Mechanical effects on strained conductors
9 Example 6 - Mechanical effects on strained conductors with
   dropper in the middle of the span
10 Example 7 - Mechanical effects on vertical main conductors
   (droppers)
11 Example 8 - Thermal effect on bare conductors
Bibliography

IEC TR 60865-2:2015(E) shows the application of procedures for the calculation of mechanical and thermal effects due to short circuits as presented in IEC 60865-1. Thus, this technical report is an addition to IEC 60865-1. It does not, however, change the basis for standardized procedures given in that publication. This second edition cancels and replaces the first edition published in 1994 and constitutes a technical revision. It includes the following changes. The determinations for auto reclosure together with rigid conductors have been revised. The configurations in cases of flexible conductor arrangements have been changed. The influence of mid-span droppers to the span has been included. For vertical cable-connection the displacement and the tensile force onto the lower fixing point may be calculated now. Additional recommendations for foundation loads due to tensile forces have been added. The subclause for determination of the thermal equivalent short-circuits current has been deleted (is part of IEC 60909-0:2001 now). The standard IEC 60865-1:2011 has been reorganized and some of the symbols have been changed to follow the conceptual characteristic of international standards.