| Autor: |
Motohiro Sato, Yasunobu Yokomizu, Katsuhiko Horinouchi, Yasunori Nakamura, Yuji Yoshitomo, Yoshinori Shimizu |
| Předmět: |
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| Zdroj: |
Electrical Engineering in Japan; Jun2021, Vol. 214 Issue 2, p1-15, 15p |
| Abstrakt: |
Regarding a PTFE (polytetrafluoroethylene) nozzle ablation due to arc radiation exposure in SF6 circuit-breaker, the ablated mass of the nozzle was formulated as a function of an arc current and an internal radius of the nozzle surface considering the radiation power absorbed on the surface. Furthermore, this formulation contributed to subsequent development of calculation method for evaluating gas pressure rise process during current interruption. And, verification experiments of the calculationmethodwere performedwith a model SF6 circuitbreaker equipped a puffer chamber. Calculation results derived from the developed calculation method showed good agreement with measured gas pressure rise process. On the basis of the verified results, a discussion wasmade to explain pressure rise mechanism. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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