Earth Electrodes for Grounding NEMP Type Lightning

Abstract

An investigation was conducted into the properties of earth electrode systems over a frequency range covering the NEMP type lightning (rise times faster than 2 microseconds) power spectrum. Since this power spectrum extends well into the VHF region, conventional low frequency (less than 100 Hz) and historic impulse measurement techniques were not adequate to describe the electrode system's response to NEMP type lightning. Therefore, initial emphasis was placed on the development of a measurement technique that could be used to both: (1) Assess the performance of a given ground electrode; and (2) conduct a site survey to determine the best location for ground electrodes. Then the technique was used to evaluate the performance of various common ground electrode configurations (the subject of a companion paper to be published at a later date).

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1983
Accession Number
ADP002182

Entities

People

  • D. P. Millard

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alternating Current
  • Amplifiers
  • Connectors
  • Dielectric Properties
  • Direct Current
  • Electrodes
  • Electronic Equipment
  • Engineering
  • Frequency
  • Impedance
  • Lightning
  • Oscilloscopes
  • Power Spectra
  • Resistance
  • Spectra
  • Standards
  • Voltage

Readers

  • Aerospace Test and Evaluation
  • Electrical Engineering