This second edition cancels and replaces the first edition published in 2000. The example given in Clause 8 is new and mirrors the introduction of the new 6.8 of IEC 60909-0:2016.Ĭlause 9 gives the circuit diagram and the data of a test network and the results for a calculation carried out in accordance with IEC 60909-0, to offer the possibility for a comparison between the results found with a digital program for the calculation of short-circuit currents and the given results for and in a high-voltage network with power station units, generators, asynchronous motors and lines in four different voltage levels 380 kV, 110 kV, 30 kV and 10 kV. The example given in Clause 8 is new and mirrors the introduction of the new 6. The three examples given in Clauses 5, 6 and 7 are similar to those given in IEC TR 60909-4:2000 but they are revised in accordance with IEC 60909-0, which replaces it. The three examples given in Clauses 5, 6 and 7 are similar to those given in IEC TR 60909-4:2000 but they are revised in accordance with IEC 60909-0, which replaces it. Iec 61078:2016 this international standard describes: - the requirements to apply when reliability block diagrams (rbds) are used in dependability analysis. This document does not include additional requirements but gives support for the modelling of electrical equipment in the positive-sequence, the negative-sequence and the zero-sequence system (Clause 4), the practical execution of calculations in a low-voltage system (Clause 5), a medium-voltage system with asynchronous motors (Clause 6) and a power station unit with its auxiliary network feeding a large number of medium-voltage asynchronous motors and low-voltage motor groups (Clause 7). This edition includes the following significant technical changes with respect to the previous edition:- contribution of windpower station units to the short-circuit current - contribution of power station units with ful size converters to the short-circuit current - new document structure.This publication is to be read in conjunction with Počet stran:ġ49 Mám zájem o normu IEC 60909-0-ed.2.IEC TR 60909-4:2021 which is a Technical Report, is intended to give help for the application of IEC 60909-0 for the calculation of short-circuit currents in 50 Hz or 60 Hz three-phase AC systems. short-circuit currents in three-phase a.c. This edition constitutes a technical revision. IEC 64, Edition 2.0, Telecontrol equipment and systems - Part 5-604: Conformance test cases for the IEC 64 companion standard IEC 6, Edition 1. This second edition cancels and replaces the first edition published in 2001.
It establishes a general, practicable and concise procedure leading to results which are generally of acceptable accuracy and deals with the calculation of short-circuit currents in the case of balanced or unbalanced short circuits. The fourth edition IEC/EN 6 (4th Edition) will become a mandatory standard covering safety for medical devices on December 31, 2018.1,2 As with any new standard edition, there are changes that necessitate additional evaluations of the product beyond those required by the previous edition. IEC 60909-0:2016 is applicable to the calculation of short-circuit currents in low-voltage three-phase AC systems, and in high-voltage three-phase AC systems, operating at a nominal frequency of 50 Hz or 60 Hz.
systems Part 0: Calculation of currents Courants de court-circuit dans les rseaux triphass courant alternatif Partie 0: Calcul des courants INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION.
Anglicky a francouzsky - Elektronické PDF (8961.50 CZK) This is a preview - click here to buy the full publication IEC 60909-0 Edition 2.0 2016-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Short-circuit currents in three-phase a.c.