IEC/TR 60865-2 Ed. 2.0 en:2015

Current Revision
Short-circuit currents - Calculation of effects - Part 2: Examples of calculation

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Short-circuit currents - Calculation of effects - Part 2: Examples of calculation

PUBLISH DATE 2015

Short-circuit currents - Calculation of effects - Part 2:

Examples of calculation

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.
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