IEC TR 61000-1-9:2024 PDF

Electromagnetic compatibility (EMC) - Part 1-9: General - Evaluation of uncertainty for the measurement of harmonic current emissions

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Title (English):

IEC TR 61000-1-9:2024

Electromagnetic compatibility (EMC) - Part 1-9: General - Evaluation of uncertainty for the measurement of harmonic current emissions

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 23
Publication date:: March 11, 2024
Edition:: IEC TR 61000 edition 1 version 1
ICS:: 33.100.01

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Description (English):

IEC TR 61000-1-9:2024 which is a Technical Report, provides examples for the evaluation of measurement uncertainty of harmonic emission tests performed using IEC 61000-3-2 and IEC 61000-3-12, and their application to the relevant conformity decisions. It also contains practical formulae to enable calculations in accordance with ISO/IEC Guide 98-3 (GUM).

Technical details

Technical committee: SC 77A - EMC - Low frequency phenomena
SKU: IEC TR 61000-1-9:2024

Abstract

Overview

IEC TR 61000-1-9:2024 is a Technical Report from the IEC that addresses electromagnetic compatibility (EMC) measurement uncertainty for harmonic current emissions. It provides practical formulae, worked examples and spreadsheet files to evaluate measurement uncertainty for tests performed under IEC 61000-3-2 and IEC 61000-3-12, using the ISO/IEC Guide 98-3 (GUM) approach. The report is aimed at helping testing laboratories and conformity assessors apply uncertainty analysis to conformity decisions.

Key topics and technical requirements

Scope and methodology: Applies the GUM (ISO/IEC Guide 98-3) method to harmonic emission tests and describes a measurement model (including single-phase measurement circuits).
Uncertainty components: Detailed treatment of major contributors, including:
- current measurement equipment performance,
- input impedance of current measurement devices,
- test voltage RMS value and its harmonic distortion,
- loading effect of voltmeters,
- method-related effects and worst‑case scenarios.
Worst‑case and typical examples: Tables and annexes present worst‑case uncertainty budgets for different equipment classes and selected harmonics (e.g., Class A, C, D, various harmonic numbers).
Formulas and spreadsheets: Practical formulae link each uncertainty source to its contribution; accompanying spreadsheets facilitate hands‑on calculations in line with GUM.
Conformity decisions: Guidance on how measurement uncertainty supports pass/fail decisions for harmonic current limits, compatible with ISO/IEC 17025 and JCGM 106 practices.

Practical applications and users

Who benefits:

Accredited testing laboratories (ISO/IEC 17025) performing EMC harmonic tests.
Conformity assessment bodies and certification schemes evaluating compliance with harmonic limits.
EMC engineers and product manufacturers who need to quantify uncertainty when demonstrating compliance with / limits.

Overview

Key topics and technical requirements

Scope and methodology: Applies the GUM (ISO/IEC Guide 98-3) method to harmonic emission tests and describes a measurement model (including single-phase measurement circuits).
Uncertainty components: Detailed treatment of major contributors, including:
- current measurement equipment performance,
- input impedance of current measurement devices,
- test voltage RMS value and its harmonic distortion,
- loading effect of voltmeters,
- method-related effects and worst‑case scenarios.
Worst‑case and typical examples: Tables and annexes present worst‑case uncertainty budgets for different equipment classes and selected harmonics (e.g., Class A, C, D, various harmonic numbers).
Formulas and spreadsheets: Practical formulae link each uncertainty source to its contribution; accompanying spreadsheets facilitate hands‑on calculations in line with GUM.
Conformity decisions: Guidance on how measurement uncertainty supports pass/fail decisions for harmonic current limits, compatible with ISO/IEC 17025 and JCGM 106 practices.

Practical applications and users

Who benefits:

Accredited testing laboratories (ISO/IEC 17025) performing EMC harmonic tests.
Conformity assessment bodies and certification schemes evaluating compliance with harmonic limits.
EMC engineers and product manufacturers who need to quantify uncertainty when demonstrating compliance with / limits.

IEC TR 61000-1-9:2024 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Abstract

Overview

Key topics and technical requirements

Practical applications and users

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