IEC TR 60909-2 Short-circuit currents in three-phase a.c. systems – Part 2: Data of electrical equipment for short-circuit current calculations
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IEC TR 60909-2 Document Information:
Title
Short-circuit currents in three-phase a.c. systems – Part 2: Data of electrical equipment for short-circuit current calculations
International Electrotechnical Commission
Publication Date:
Nov 1, 2008
Scope:
This Technical Report comprises data collected from different countries to be used when necessary for calculating short-circuit currents in accordance with IEC 781 and IEC 909.
Generally, electrical equipment data are given by the manufacturers on the name plate or by the electricity supplier. In some cases, however, the data may not be available. The data presented in this report may be applied for calculating short-circuit currents in low-voltage systems if they are in accordance with typical equipment employed in the user’s country. The collected data and their evaluation may be used for medium or high voltage planning purposes and also for comparison with data given by manufacturers. For overhead lines the electrical data may be calculated from the physical dimensions.
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