IEC TR 60909-2:2008 pdfダウンロード

IEC TR 60909-2:2008 pdfダウンロード。Short-circuit currents in three-phase a.c. systems – Part 2: Data of electrical equipment for short-circuit current calculations
1 1.1 General
Scope and object
This part of IEC 60909 comprises data of electrical equipment collected from different countries to be used when necessary for the calculation of short-circuit currents in accordance with IEC 60909-0. 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 in this report may be applied for calculating short-circuit currents in low-voltage networks 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 or electricity suppliers. For overhead lines and cables the electrical data may in some cases also be calculated from the physical dimensions and the material following the equations given in this report.
Thus this technical report is an addition to IEC 60909-0.
It does not, however, change the basis for the standardized calculation procedure given in IEC 60909-0 and IEC 60909-3.
1.2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60909-0:2001 , Short-circuit currents in three-phase a.c. systems – Part 0: Calculation of currents IEC 60909-3:- 1 , Short-circuit currents in three-phase a.c. systems – Part 3: Currents du-ring two separate simultaneous line-to-earth short-circuit currents and partial short-circuit currents flowing through earth 2
2.1 Data for electrical equipment General The data presented are necessary for the calculation of short-circuit currents. They are sometimes presented in the form of curve sheets and sometimes in the form of examples in tables.
In the case of easy equations they are given for the calculations of positive-sequence and zero-sequence short-circuit impedances for overhead lines and cables.
In all, 1 5 National Committees provided information in response to a questionnaire sent out before the first edition of this report.
Table 1 of the first edition of this report is given in Annex A. In some cases, average values or characteristic trends as function of rated power, rated voltage, etc. are given.