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• The protection of telecommunications lines and equipment against lightning discharges
• TABLE OF CONTENTS
• CHAPTER 9 – FIBRE OPTIC CABLE LIGHTNING DAMAGE ASSESSMENT
  • 1 General
  • 2 Introduction
  • 3 Direct buried cables
    • 3.1 Lightning damage mechanisms in buried cable
    • 3.2 Annual damage rate for buried cable (first approach)
    • 3.3 Annual damage rate for buried cable (second approach)
    • 3.4 Improvement due to shield wires
    • 3.5 Improvement due to route redundancy
  • 4 Aerial cables
    • 4.1 Annual lightning damage rate assessment for aerial cable
    • 4.2 Improvement due to joint use with a power line (aerial construction)
    • 4.3 Improvement due to route redundancy
  • References
• CHAPTER 10 – OVERVOLTAGES AND OVERCURRENTS MEASURED ON TELECOMMUNICATION SUBSCRIBER LINES
  • 1 General
  • 2 Measuring equipment
  • 3 Classification of lines
  • 4 Parameters of the overvoltages and overcurrents
    • 4.1 Classification
    • 4.2 Peak value xp
    • 4.3 Front time or rise time T1
    • 4.4 Steepness of the front or rate of rise S
    • 4.5 Equivalent decay time to half-value T2
    • 4.6 Specific energy
    • 4.7 Statistical evaluation of lightning parameters
      • 4.7.1 Introduction
      • 4.7.2 Logarithmic normal distribution [5]
      • 4.7.3 One-side truncated logarithmic normal distribution
      • 4.7.4 Heterogeneous population
  • 5 Results
    • 5.1 General
    • 5.2 Rural area
    • 5.3 Urban/suburban area
  • 6 Conclusions
  • References
  • Appendix I – Measurement results in Canada
    • I.1 Introduction
    • I.2 General survey description
    • I.3 Monitoring techniques
    • I.4 Results
  • Appendix II – Measurement results in France
    • II.1 Introduction
    • II.2 Measuring equipment and experimental line characteristics
    • II.3 Analysis of induced overvoltages
    • II.4 Statistical analysis of induced overvoltages
    • II.5 Conclusions and outlook
    • References
  • Appendix III – Measurement results in Germany
    • III.1 Introduction
    • III.2 Measuring equipment
    • III.3 Application of surge voltage counters
    • III.4 Results
    • III.5 Conclusions
  • Appendix IV – Measurement results in Italy
    • IV.1 Introduction
    • IV.2 Measuring equipment, location and route characteristics
    • IV.3 Parameters of measured overvoltages and overcurrents
  • Appendix V – Measurement results in Japan
    • V.1 Introduction
    • V.2 Lightning surge voltage
    • V.3 Lightning surge current
    • References
  • Appendix VI –Measurement results in the United States of America
    • VI.1 Introduction
    • VI.2 Measuring equipment, location and route characteristics
    • VI.3 Parameters of measured overvoltages and overcurrents
    • VI.4 Conclusions
    • References