IEC 60865-1 Ed. 3.0 b:2011

Current Revision

Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods

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IEC 60865-1 Ed. 3.0 b:2011

Name: IEC 60865-1 Ed. 3.0 b:2011 – Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods
Brand: International Electrotechnical Commission
SKU: IEC 60865-1 Ed. 3.0 b:2011
Price: 423.50 USD
Availability: InStock

Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods

PUBLISH DATE 2011

PAGES 108

Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods

IEC 60865-1:2011 is applicable to the mechanical and thermal effects of short-circuit currents. It contains procedures for the calculation of: the electromagnetic effect on rigid conductors and flexible conductors, the thermal effect on bare conductors.

For cables and insulated conductors, reference is made, for example, to IEC 60949 and IEC 60986. For the electromagnetic and thermal effects in d.c. auxiliary installations of power plants and substations, reference is made to IEC 61660-2. Only a.c. systems are dealt with in this standard.

This third edition cancels and replaces the second edition published in 1993 and constitutes a technical revision. The main changes with respect to the previous edition are:

The determinations for automatic reclosure together with rigid conductors have been revised.
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 now be calculated.
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 (it is now part of IEC 60909-0).
The regulations for thermal effects of electrical equipment have been deleted.
The standard has been reorganized and some of the symbols have been changed to follow the conceptual characteristic of international standards.