Calculation of the interruption capability of SF/sub 6/-CF/sub 4/ and SF/sub 6/-C/sub 2/F/sub 6/ mixtures. I. Plasma properties

Chervy, B; Riad, H.S.; Gleizes, Alain

doi:10.1109/27.491760

Cited by 41 publications

(19 citation statements)

References 19 publications

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“…At present, SF 6 /carbon tetrafluoride (CF 4 ) mixtures seem to be good candidate, and are widely investigated because of their effectiveness for arc quenching and dielectric insulation compared with natural gases. 5,6 In order to interrupt a fault current, a circuit breaker needs to operate successfully in two critical stages. The first is known as thermal recovery, during which the arc temperature is cooled down rapidly in a few microseconds around the time of the ac current reaching zero ("current zero").…”

Section: Introductionmentioning

confidence: 99%

Investigation on critical breakdown electric field of hot sulfur hexafluoride/carbon tetrafluoride mixtures for high voltage circuit breaker applications

Wang

Murphy

Rong

et al. 2013

Journal of Applied Physics

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Section: Introductionmentioning

confidence: 99%

Investigation on critical breakdown electric field of hot sulfur hexafluoride/carbon tetrafluoride mixtures for high voltage circuit breaker applications

Wang

Murphy

Rong

et al. 2013

Journal of Applied Physics

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“…The first of them, PTFE, contains C and F atoms; its structural formula is [-CF 2 CF 2 -] n . It has an extremely low coefficient of friction, a nonreactive character, and high melting temperature of 618 K and evaporation temperature of 809 K. This material is widely used as a nozzle material in high-voltage circuit breakers [4,12,13,14]. Both PMMA and POM include C, H, and O atoms.…”

Section: Polymers Treatedmentioning

confidence: 99%

Numerical and experimental investigations on thermal interaction between thermal plasma and solid polymer powders using induction thermal plasma technique

Tanaka¹,

Takeuchi²,

Sakuyama³

et al. 2007

J. Phys. D: Appl. Phys.

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Abstract. Interaction between thermal plasma and polymer solid powders was investigated using inductively coupled thermal plasma (ICTP) technique. Interaction between thermal plasmas and polymers is extremely important, for example, for design of down-sized circuit breakers, because it fundamentally affects the interruption capability of the circuit breakers. The ICTP technique was used in the present work because it presents the advantages of no contamination and good repeatability. The polytetrafluoroethylene (PTFE), polymethylmethacrylate (PMMA), polyethylene (PE), and polyoxymethylene (POM) were treated as polymer materials. Numerical modelling for injection of polymer solid powders into Ar thermal plasma was also made including thermal interactions between thermal plasmas and polymer powders. Results showed that PMMA-ablated vapour has a higher plasma-quenching efficiency than others; the polymer solid properties affect the plasma-quenching ability indirectly. Comparison of the calculated results to experimental results, showed good agreement from the viewpoints of the spatial distribution of ablated vapour concentration and the average solid particle velocity.

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“…In the context of growing concern with environmental issues, arc-quenching gases with high performance and low environment load are required for CBs. Arcquenching gases and gas mixtures other than SF 6 have been investigated previously [2,3], but no gases have been found to outperform SF 6 in arc-quenching efficiency.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of thermal interaction between polymer and argon induction thermal plasma

Takeuchi

Tanaka

Uesugi

et al. 2009

Elect Comm in Japan

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SUMMARYInfluence of polymer powder injection into Ar thermal plasmas was investigated by numerical approaches. Thermal plasma-polymer solid coupling phenomena such as melting and evaporation were considered to study plasma-quenching effect of polymer injection. Dominant process for decay of plasma temperature was examined by changing thermodynamic parameters such as melting, boiling temperatures and their latent heats of solid and liquid polymers. As a result, thermodynamic properties of evaporated polymer vapor directly affect plasma-quenching phenomena more markedly than the properties of liquid and solid which influence plasma quenching efficiency through the amount of evaporation.

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Calculation of the interruption capability of SF/sub 6/-CF/sub 4/ and SF/sub 6/-C/sub 2/F/sub 6/ mixtures. I. Plasma properties

Cited by 41 publications

References 19 publications

Investigation on critical breakdown electric field of hot sulfur hexafluoride/carbon tetrafluoride mixtures for high voltage circuit breaker applications

Investigation on critical breakdown electric field of hot sulfur hexafluoride/carbon tetrafluoride mixtures for high voltage circuit breaker applications

Numerical and experimental investigations on thermal interaction between thermal plasma and solid polymer powders using induction thermal plasma technique

Numerical simulation of thermal interaction between polymer and argon induction thermal plasma

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