SN EN 61000-4-7 : 2002

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
      current-transformers
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
Annex ZA (normative) Normative references to international
         publications with their corresponding European publications
Bibliography

Applies to instrumentation intended for measuring spectral components in the frequency range up to 9 kHz which are superimposed on the fundamental of the power supply systems at 50 Hz and 60 Hz.