Electrical Breakdown Strength Results from the EU Testing Program for Potential ITER Insulation

  • A. J. Broadbent
  • J. Crozier
  • K. D. Smith
  • A. J. Street
  • J. M. Wiatrzyk
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)

Abstract

Insulation systems will be a key element in the future construction and impregnation of the coils for the ITER device. Electrical barrier layers have been specified to improve the electrical reliability, and this program includes ceramic plasma sprayed coatings, Kapton, Nomex and Mica in conjunction with various Epoxy resins. The electrical breakdown strengths in liquid nitrogen of twenty-two different insulation systems are reported. The final results of this program are presented and compared with the results from a benchmark testing program (insulation system based on anhydride cured DGEBA resin and S2 glass).

Keywords

Aromatic Amine Bond Coat Acid Anhydride Breakdown Strength Insulation System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    A. J. Broadbent “Report of the Benchmark Tests of Insulation Material for ITER” Oxford Instruments report to the NET team September 1994.Google Scholar
  2. 2.
    ASTM D3755–86 (90) Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Under Direct Voltage Stress ASTM 1916 Race St, Philadelphia.Google Scholar
  3. 3.
    ASTM D149–92. Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies. ASTM 1916 Race St, Philadelphia.Google Scholar
  4. 4.
    A. J. Broadbent, J. Crozier, K. D. Smith, A. J. Street, J. M. Wiatrzyk “Initial Results from the Testing of Potential ITER Insulation Materials” Cryogenics 1995 Vol 35 Number 11 Pages 701–703.CrossRefGoogle Scholar
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    A. J. Broadbent, J. Crozier, K. D. Smith, A. J. Street, J. M. Wiatrzyk “Initial Results from the Testing of Potential ITER Insulation Materials” Cryogenics 1995 Vol 35 Number 11 Pages 701–703.CrossRefGoogle Scholar
  6. 5.
    J. B. Schutz, J. B. Darr, R. P. Reed “Dielectric Strength of Candidate ITER Insulation Materials” Advances in Cryogenic Engineering (Materials) Vol 40 Pages 1059–1066.Google Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • A. J. Broadbent
    • 1
  • J. Crozier
    • 1
  • K. D. Smith
    • 1
  • A. J. Street
    • 1
  • J. M. Wiatrzyk
    • 1
  1. 1.Oxford InstrumentsSpecial ProjectsEynsham, Witney, Oxon.England

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