Characterisation of Polytetrafluoroethylene Nozzle Failure in Ultra-High Voltage Circuit Breakers

JianFeng Gao; Zhen Pang; CongRui Zhang; Cheng Chi; RuoYu Xu; Tan Liu; Yu Han; Yi Ding

doi:10.1049/ema3.70040

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Characterisation of Polytetrafluoroethylene Nozzle Failure in Ultra-High Voltage Circuit Breakers

更新时间：2026-09-24

- Characterisation of Polytetrafluoroethylene Nozzle Failure in Ultra-High Voltage Circuit Breakers
- Electrical Materials and Applications Vol. 3, Issue 1, (2026)
- 作者机构：
  
  1. China Electric Power Research Institute,Beijing,China
  2. State Key Laboratory of Advanced Power Transmission Technology,Beijing,China
  3. Contribution: Methodology, Validation, Formal analysis, Data curation, Writing - original draft
  4. Contribution: Data curation, Writing - original draft, Visualization
  5. Contribution: Writing - review & editing, Visualization
  6. Contribution: Software, Writing - review & editing
  7. Global Energy Interconnection Research Institute Europe GmbH,Berlin,Germany
  8. Contribution: Methodology, Formal analysis
  9. Contribution: Writing - review & editing
  10. Contribution: Funding acquisition, Project administration, Resources, Supervision, Visualization
  11. Contribution: Resources, Supervision, Project administration, Funding acquisition
- 作者简介：
- 基金信息：
- DOI：10.1049/ema3.70040
  CLC：
- Published：2026
- 稿件说明：
移动端阅览
JianFeng Gao, Zhen Pang, CongRui Zhang, et al. Characterisation of Polytetrafluoroethylene Nozzle Failure in Ultra-High Voltage Circuit Breakers[J]. Electrical Materials and Applications, 2026, 3(1).
DOI：

JianFeng Gao, Zhen Pang, CongRui Zhang, et al. Characterisation of Polytetrafluoroethylene Nozzle Failure in Ultra-High Voltage Circuit Breakers[J]. Electrical Materials and Applications, 2026, 3(1). DOI： 10.1049/ema3.70040.

摘要

Polymeric nozzles used in the arcing chamber of high-voltage circuit breakers confine the arc and regulate the gas flow

but are prone to ablation surface damage

stress cracking and other adverse changes when exposed to a harsh arcing environment—a long-standing problem that limits the electrical and mechanical endurance of the switching product. The present work adds fresh experimental evidence to understand the nozzle failure mechanisms by performing a comparative material examination of PTFE composite nozzles for 1100 kV gas-insulated switchgear (GIS) circuit breakers. Both post-service and virgin nozzles were characterised using a range of physical characterisations. These include X-ray diffraction (XRD)

scanning electron microscopy (SEM)

Raman spectroscopy

Fourier-transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). Results indicate that the mechanical properties of the nozzles

such as the tensile strength and elongation at break

diminished after heavy breaking duty. Molecular chains in the amorphous regions of the PTFE material experienced sliding

rearrangement and fracture while crystallinity increased.

Abstract

Polymeric nozzles used in the arcing chamber of high-voltage circuit breakers confine the arc and regulate the gas flow

but are prone to ablation surface damage

scanning electron microscopy (SEM)

Raman spectroscopy

Fourier-transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). Results indicate that the mechanical properties of the nozzles

such as the tensile strength and elongation at break

diminished after heavy breaking duty. Molecular chains in the amorphous regions of the PTFE material experienced sliding

rearrangement and fracture while crystallinity increased.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

The Temperature Reduction Characteristics of Water Droplets Freezing on Hydrophobic Surface

Molecular Design of a Novel Phosphorus–Nitrogen–Boron Synergistic Reactive Flame Retardant for Highly Fire-Safe and Smoke-Suppressive Polyurethane Elastomers

Breakdown Characteristics of PEEK Insulation Immersed in Synthetic Ester Liquid for Subsea Cable Connectors

Acoustic Metamaterial for Low-Frequency Sound Absorption in Urban Substations

Long-Term Thermal Stability of Electron-Beam-Irradiation-Crosslinked Polypropylene Films for Power Capacitors

Related Author

No data

Related Institution

No data

AI问答

⁰