PD CLC/TR 50669:2017

European foreword
Introduction
1 Scope
2 General
3 Specific situation in the frequency range
   2 kHz - 150 kHz
4 Dimension of the EMC problem & Environment
5 Situation of emission levels and EMI
6 Specific EMC issues
7 Measurement issues
8 Emissions - Measurement and test results
9 EMI cases - Measurement and test results
10 Standardization, Legislation & Regulation
11 Conclusions
12 Recommendations
Annex A - MCS robustness A set of basic principles
          for field proven effective PLC systems
          operating in the CENELEC A-Band
Annex B - Measurement issues: Frequency-domain
          vs. Time-domain analysis
Annex C - Comparison of measurement methods
          for the frequency range 2 kHz - 150 kHz
Annex D - Acronyms and abbreviations
Bibliography

Provides EMC problems in the frequency range 2 kHz - 150 kHz, concerning EMC between electrical equipment in general as well as EMC between non-mains communicating equipment/systems (NCE) and mains communicating systems (MCS) as a particular issue.

Following to [1, 2, 3] having proceeded with the collection of related information, with this Technical Report, further extended information is provided including:

• the given EMC problems in the frequency range 2 kHz - 150 kHz, concerning EMC between electrical equipment in general as well as EMC between non-mains communicating equipment / systems (NCE) and mains communicating systems (MCS) as a particular issue

• the given situation of related emissions in the grid, with other measurement results

• EMI cases and related investigation results

• new findings on parameters to be considered when dealing with EMC in this frequency range, in particular related to

• the impact of the network impedance and its variation over time on the more or less disturbing effect of emissions in this frequency range

• the behaviour of emissions in this frequency range over time and the increasing need for performing also time domain measurements for comprehensively evaluating emissions and their disturbance potential

• the actual standardisation situation

• needs for the future, concerning

• measurement of related emissions

• investigation on the impedance of the grid / in installations over time

• closing gaps in standardisation

• installation guidelines and possibly regulatory measures related to the ageing effect.

In light of different positions on and in evaluating related EMC problems, with additional measurement results concerning emission levels in the supply network and results from investigations of additional proven EMI cases, the given problems are highlighted in more detail and recommendations for what to do in the future are provided.