IEC 60909-0:2016 - Short-circuit currents in three-phase a.c. systems - Part 0

Overview

This record identifies Edition 2.0 (2016) of IEC 60909-0, prepared by IEC TC 73. The standard concerns short-circuit currents in three-phase a.c. systems, and it is held here to pin the identity of the calculation-method edition. The record was retrieved on 2026-11-12.

According to the record, the 2016 edition includes 50 Hz and 60 Hz three-phase LV short-circuit calculations. The local implementation, however, does not cover the whole standard: it provides an explicitly bounded LV radial three-phase screen, which is only a restricted radial balanced-fault subset. The fault types and network structures the standard treats are therefore not all within the implementation's scope.

The record states two important limits. First, IEC lists a 2026 successor, and this entry does not establish conformance to that successor. Second, it does not establish current national adoption either. The record is therefore not a conformance statement but a traceable description of which edition the work follows. The practical consequence for a designer: the short-circuit screen can be useful for quick preliminary assessment and for selectivity and breaking-capacity checks, but for structures outside its scope (for example non-radial or unbalanced faults), and in projects needing formal conformance, the full text of the standard and a detailed calculation are required.

Key points

1. Standard: IEC 60909-0:2016, Edition 2.0, prepared by IEC TC 73; paid, only metadata used.
2. The 2016 edition includes 50 Hz and 60 Hz three-phase LV short-circuit calculations.
3. The local implementation covers only a restricted radial balanced-fault subset.
4. The implementation is an explicitly bounded LV radial three-phase screen.
5. IEC lists a 2026 successor; this entry does not establish conformance to it.
6. The entry also does not establish current national adoption.

Using it in design

• Use the short-circuit screen as a quick preliminary assessment and as a first step in selectivity and breaking-capacity checks.
• Do not rely on the screen for non-radial networks and unbalanced faults; run a detailed calculation.
• State in reports which edition (2016) was followed and do not claim conformance to the 2026 successor.
• For projects requiring formal conformance, consult the full text and the national adoption.

Who should read it

Electrical designers doing LV short-circuit calculations and developers documenting the scope of a calculation tool.

Publication details

Authors

IEC TC 73

Publisher

IEC

Year

2016

Edition

2.0

Document language

English

Source type

Standard

Access

Citation only

Licence

Copyright retained; citation only — the publisher’s terms apply to the original document

Citation