Research on Ablation Resistance of Circuit Breaker Nozzle Material PTFE

XING Zhaoliang; JIAO Yanjun; ZHANG Chong; CHEN Min; LI Weiguo; CHEN Xin

doi:10.13296/j.1001-1609.hva.2017.02.024

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Research on Ablation Resistance of Circuit Breaker Nozzle Material PTFE

更新时间：2025-04-26

- Research on Ablation Resistance of Circuit Breaker Nozzle Material PTFE
- High VoltageApparatus Vol. 53, Issue 2, Pages: 154-158+165(2017)
- 作者机构：
  
  1. 全球能源互联网研究院先进输电技术国家重点实验室
  2. 国网江苏省电力公司
  3. 华北电力大学新能源电力系统国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.02.024
  CLC： TM561
- Published：2017
- 稿件说明：
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[1]邢照亮,焦彦俊,张翀,陈敏,李卫国,陈新.断路器喷口材料PTFE耐烧蚀性能的研究[J].高压电器,2017,53(02):154-158+165.

XING Zhaoliang, JIAO Yanjun, ZHANG Chong, et al. Research on Ablation Resistance of Circuit Breaker Nozzle Material PTFE[J]. High voltageapparatus, 2017, 53(2): 154-158+165.
[1]邢照亮,焦彦俊,张翀,陈敏,李卫国,陈新.断路器喷口材料PTFE耐烧蚀性能的研究[J].高压电器,2017,53(02):154-158+165. DOI： 10.13296/j.1001-1609.hva.2017.02.024.

XING Zhaoliang, JIAO Yanjun, ZHANG Chong, et al. Research on Ablation Resistance of Circuit Breaker Nozzle Material PTFE[J]. High voltageapparatus, 2017, 53(2): 154-158+165. DOI： 10.13296/j.1001-1609.hva.2017.02.024.

摘要

喷口材料的性能直接影响着断路器的开断特性

为研究喷口材料的耐烧蚀性能

文中设计了一套直流电弧发生装置

可以产生电压、电流、时间、弧长可控的直流电弧

在电弧轴向中充入气流模拟断路器吹弧对聚四氟乙烯（PTFE）的烧蚀

以PTFE材料经受一次电弧烧蚀所损失的质量作为其烧蚀性能的指标。结果表明:稳定燃烧的直流电弧呈现负电阻特性

PTFE的烧蚀量随着电弧电流的增大而增大

随着电弧功率的增加而增大

在电弧中充入气流

电弧燃烧不稳定

并且气流可以明显减少电弧对PTFE的烧蚀量。

Abstract

The performance of nozzle material directly affects the characteristic of circuit breaker. To investigate the ablation resistance of nozzle material of a circuit breaker

a DC electric arc generator is designed with controllable arc voltage

current

length and time. Air flow is blown into the electric arc along axial direction to simulate the PTFE ablation in circuit breaker

and the mass loss of PTFE after suffering arc ablation is taken as an indicator of its ablative performance. The results show that:1)the DC arc with stable combustion presents negative resistance characteristic;2)the mass loss of PTFE increases with increasing arc current and arc power; and 3)the arc becomes unstable when blowing air flow

and the air flow can significantly reduce the arc ablation of PTFE.

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