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Ablated mass of PTFE nozzle due to high‐current SF 6 arc exposure: Formulation of ablated mass
Author(s) -
Sato Motohiro,
Horinouchi Katsuhiko,
Hiza Shuichi,
Nakamura Yasunori,
Shimizu Yoshinori,
Yokomizu Yasunobu
Publication year - 2019
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.23239
Subject(s) - nozzle , ablation , materials science , polytetrafluoroethylene , electric arc , radiation , arc (geometry) , circuit breaker , current (fluid) , mass transfer , high voltage , voltage , analytical chemistry (journal) , mechanics , electrode , composite material , optics , chemistry , physics , electrical engineering , aerospace engineering , mechanical engineering , engineering , thermodynamics , chromatography
Characteristics of PTFE ablation due to SF 6 arc exposure were studied to predict the ablated mass of PTFE nozzle in high‐voltage circuit breaker. From the measurement of the ablated mass, the predominant factor of the PTFE ablation was revealed as a radiation power of SF 6 arc. Subsequently, the radiation power absorbed in PTFE was formulated on the basis of the radiation transfer property and the arc physics. The formulation for the prediction of the PTFE ablated mass was established with the formulated radiation power and the measured masses. Finally, the validity of the PTFE ablated mass prediction was shown from the results of the error verification with the measured masses.