EMP Evaluation of Junction Boxes, Junction-Box Covers, and Gaskets

Abstract

This study reports test results from RFI testing of electrical junction boxes with bolt-on covers. A number of cover-gasket configurations were tested. Tests indicate that a large improvement in the shielding effectiveness of junction boxes can be obtained by increasing the number of cover bolts or using a Metex 'combo strip' gasket. A simple field fix that provides a large increase in shielding effectiveness can be made by doubling the number of cover bolts used on the junction boxes.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1975
Accession Number
ADA010631

Entities

People

  • D. J. Leverenz
  • P. H. Nielsen
  • R. G. Mccormack

Organizations

  • Construction Engineering Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Antennas
  • Electromagnetic Radiation
  • Frequency
  • Junction Boxes
  • Materials
  • Power Levels
  • Power Supplies
  • Radio Frequency
  • Repetition Rate
  • Rubber Gaskets
  • Shielding
  • Signal Generators
  • Spark Gaps
  • Test And Evaluation
  • Test Equipment
  • Test Fixtures
  • Transmission Lines

Fields of Study

  • Computer science

Readers

  • Aerospace Test and Evaluation
  • Electrical Engineering
  • Solar Photovoltaics and Thermoelectric Devices.