is titled "Instrument transformers – Part 1: General requirements." It serves as the umbrella standard for all current, voltage, and combined instrument transformers.
Applies to all instrument transformers.
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The outlines several critical performance and safety parameters that manufacturers must satisfy: IEC 61869-1:2007
I can provide the targeted formulas or specific criteria found in the relevant sub-parts of the standard. Share public link Iec 61869-1 Pdf
Understanding the standard's test categories is essential for manufacturers and quality assurance professionals.
: Applies to instrument transformers with analogue or digital outputs used for measurement, protection, and control.
Manufacturers utilize the document to design hardware that meets global legal and safety baselines.
| Change Category | Description | |---|---| | | Consolidated IEC 61869-6:2016 into IEC 61869-1 | | Expanded Scope | Now covers HV applications (nominal voltage >1 kV AC or >1.5 kV DC) with frequency range extended up to 400 Hz, plus DC applications | | Test Reclassification | Reclassified certain special tests as type tests or routine tests | | New Test Additions | Added type tests, special tests, and a new clause for commissioning tests | | New Annexes | Added Annexes E, F, G, and I | is titled "Instrument transformers – Part 1: General
The standard includes both normative (mandatory) and informative (guidance) annexes:
Lists the other standards that are referenced as normative requirements, including high‑voltage test techniques (IEC 60060‑1), environmental testing procedures (IEC 60068 series), and insulation coordination standards (IEC 60071 series).
Moreover, the standard has a , meaning it is expected to remain valid without major revisions until at least that year. This gives manufacturers and users a predictable, stable reference for the coming years.
The second edition introduces several substantial technical changes compared to its predecessor: The IEC sells standards to fund its ongoing
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As of 2025, an official IEC 61869-1 PDF typically costs between 250 and 350 CHF (Swiss Francs). While expensive, it is an investment in regulatory compliance.
Defines dielectric strength, including power-frequency voltage withstand and lightning impulse tests to protect against system surges.