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...