FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions, symbols and indices
3.1 Definitions related to frequency analysis
3.2 Definitions related to harmonics
3.3 Definitions related to distortion factors
3.4 Definitions related to interharmonics
3.5 Notations
3.5.1 Symbols and abbreviations
3.5.2 Indices
4 General concepts and common requirements for all
types of instrumentation
4.1 Characteristics of the signal to be measured
4.2 Accuracy classes of instrumentation
4.3 Types of measurement
4.4 General structure of the instrument
4.4.1 Main instrument
4.4.2 Post-processing parts
5 Harmonic measurements
5.1 Current input circuit
5.2 Voltage input circuit
5.3 Accuracy requirements
5.4 Measurement set-up for emission assessment
5.5 Assessment of harmonic emissions
5.5.1 Grouping and smoothing
5.5.2 Compliance with emission limits
5.6 Assessment of voltage harmonic subgroups
6 Other analysis principles
7 Transitional period
8 General
Annex A (informative) Measurement of interharmonics
Annex B (informative) Measurements above the harmonic
frequency range up to 9 kHz
Annex C (informative) Technical considerations for
grouping method
Bibliography
Figures and Tables