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PD IEC TR 61000-1-9:2024 Electromagnetic compatibility (EMC) - General. Evaluation of uncertainty for the measurement of harmonic current emissions, 2024
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- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Uncertainty evaluation for harmonic emissions tests in IEC 61000-3-2 and IEC 61000-3-12 [Go to Page]
- 4.1 Methodology
- 4.2 Measurement model
- Figure 1 – Measurement circuit for single-phase equipment [Go to Page]
- 4.3 Uncertainty components for worst-case scenario [Go to Page]
- 4.3.1 Method
- 4.3.2 Current measurement equipment
- 4.3.3 Input impedance of the current measurement equipment
- 4.3.4 Test voltage RMS value
- 4.3.5 Harmonic distortion of the test voltage
- 4.3.6 Loading effect of the voltmeter
- 4.4 Uncertainty budget for Class A harmonic 5
- Tables [Go to Page]
- Table 1 – Worst-case uncertainty budget for Class A, Harmonic 5
- 5 Uncertainty budget for typical measurement data [Go to Page]
- 5.1 General
- 5.2 Current measurement equipment
- 5.3 Input impedance of the measurement equipment
- 5.4 Test voltage RMS value
- 5.5 Harmonic distortion of the test voltage
- 5.6 Loading effect of the voltmeter
- 6 Measurement uncertainty supporting conformity decisions
- Annex A (informative)Worst-case uncertainty budgets for various EUT classesof tests and selected harmonics [Go to Page]
- Table A.1 – Worst-case uncertainty budget for Class A, Harmonic 5
- Table A.2 – Worst-case uncertainty budget for Class A, Harmonic 6
- Table A.3 – Worst-case uncertainty budget for Class A, Harmonic15
- Table A.4 – Worst-case uncertainty budget for Class A, Harmonic 40
- Table A.5 – Worst-case uncertainty budget for Class C, Harmonic 3
- Table A.6 – Worst-case uncertainty budget for Class C, Harmonic 5
- Table A.7 – Worst-case uncertainty budget for Class C, Harmonic 11
- Table A.8 – Worst-case uncertainty budget for Class D, Harmonic 3
- Table A.9 – Worst-case uncertainty budget for Class D, Harmonic 11
- Bibliography [Go to Page]
