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A multi-functional high voltage experiment apparatus for vacuum surface flashover switch research.

Bo Zeng1, Jian-cang Su2, Jie Cheng2

  • 1Department of Engineering Physics, Tsinghua University, Beijing 100084, China.

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|May 3, 2015
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Summary

A new high voltage apparatus enables research on vacuum surface flashover switches and insulation. It generates powerful pulses for testing dielectric materials and determining switch parameters like lifetime and breakdown voltage.

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Physics

Background:

  • High voltage insulation and surface flashover switches are critical components in various electrical systems.
  • Experimental research requires specialized apparatus capable of generating controlled high voltage pulses and electric fields.

Purpose of the Study:

  • To develop and present a multifunctional high voltage apparatus for experimental research.
  • To investigate the performance of vacuum surface flashover switches with diverse dielectric materials.

Main Methods:

  • The apparatus integrates pulse generation, axial and radial field units, and switch units.
  • It produces microsecond damped ringing pulses (up to 800 kV) or unipolar pulses (up to 830 kV).
  • Six experimental configurations are established by varying pulse waveforms and field distributions.

Main Results:

  • Preliminary experiments on vacuum surface flashover switches using different dielectric materials were performed.
  • Nanosecond pulses were generated in the radial field unit, functioning as a pulse transmission line.
  • Basic operational parameters, including lifetime and breakdown voltage, were obtained for the switches.

Conclusions:

  • The developed high voltage apparatus is suitable for studying vacuum surface flashover switches and high voltage insulation.
  • The research provides essential data on the performance characteristics of flashover switches, informing future designs and applications.