 |
| Purchase Information |
| Use this form to request purchase information on IEC online subscriptions. |
|
|
Document IEC 60865-1 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
IEC 60865-1 Document Information:
Title
Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods
Courants de court-circuit - Calcul des effets - Partie 1: Définitions et méthodes de calcul
International Electrotechnical Commission
Publication Date:
Sep 1, 1993
Scope:
This International Standard is applicable to the mechanical and thermal effects of short-circuit currents. It contains standardized procedures for the calculation of the effects of the short-circuit currents in two sections as follows:
— Section 2 - The electromagnetic effect on rigid conductors and flexible conductors.
— Section 3 - The thermal effect on bare conductors and electrical equipment.
For cables and insulated conductors reference is made, for example, to IEC 949 and IEC 986.
Only a.c. systems for rated voltages up to and including 420 kV are dealt with in this standard.
The following points should particularly be noted:
1) The calculation of short-circuit currents should be based on IEC 909.
2) Short-circuit duration used in this standard depends on the protection concept and should be considered in that sense.
3) These standardized procedures are adjusted to practical requirements and contain simplifications with safety margins. Testing or more detailed methods of calculation or both may be used.
4) In section 2 of this standard, for arrangements with rigid conductors, only the stresses caused by short-circuit currents are calculated. Furthermore, other stresses can exist, e.g. caused by dead-load, wind, ice, operating forces, earthquake. The combination of these loads with the short-circuit loading should be part of an agreement and/or be given by standards, e.g. erection-codes.
The tensile forces in arrangements with flexible conductors include the effects of dead-load. With respect to the combination of other loads the considerations given above are valid.
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
