IEC TR 60909-4:2021 PDF Download
Standard EN Sample
Short-circuit Currents in Three-Phase AC Systems - Part 4: Examples for the Calculation of Short-Circuit Currents
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Technical paper IEC TR 60909-4:2021 offers instructions and examples for calculating short-circuit currents in three-phase AC systems. It is a companion to IEC 60909-0 and attempts to help with the standard's practical application.
The report's main topic is the modeling of electrical machinery in various systems, such as positive-, negative-, and zero-sequence systems. Examples of low-voltage systems, medium-voltage systems with asynchronous motors, auxiliary network-equipped power plant units, and wind power plant units are also included.
The report's examples have been updated to comply with IEC 60909-0, which supersedes the earlier version. A test network with circuit diagrams, information, and calculation results is also included in the report for comparison.
Significant technical updates, including adaptation to IEC 60909-0:2016, the addition of an example for wind power station units, and the correction of errors, are included in the second edition of IEC TR 60909-4:2021.
| Edition | 2.0 |
| ICS Codes | 17.220.01 - Electricity. Magnetism. General aspects 29.240.20 - Power transmission and distribution lines |
| Language(s) | English |
| File Size | 2.4 MB |
