Sulphur hexafluoride as a high-voltage insulation - selected problems

• Autorzy: Opydo W. , Juszczyk Z. , Stawicki J. , Opydo-Szymaczek J.
• Języki publikacji: EN

Abstrakty

EN

The paper presents some selected properties of sulphur hexafluoride (SF₆) a medium used for high-voltage insulation and electric arc suppression purposes. The results are presented of the studies aimed at determining the effect of the electrode material type, temperature, gas density and interelectrode gap on the SF₆ electric strength. The considered systems had both flat electrodes or one flat and the other (cathode) having the form of a rod of 3 mm or 30 mm diameter, ended with a hemisphere. The electrodes have been made of stainless steel or aluminum. The results were mathematically processed with the use of the Statistica [11] computer software. It was found that SF₆ temperature changes in the range from 243 K to 293 K with constant SF6 density did not cause variation of electric strength of the gas. Moreover, the effect of the electrode material type on electric strength of SF₆ was observed only in the systems distinguished by macroscopic uniformity of the electric field and in case of the gas density exceeding 15 kg/m³, corresponding to SF₆ pressure amounting about to 2.5-10⁵ Pa in the temperature 293 K. Physical interpretation of the study results is proposed and formulated. Additionally, the paper discusses the hazards arising from the use of SF₆ for the health of the persons operating the equipment and for the environment.

Słowa kluczowe

EN

high-voltage insulation; electric strength; sulphur hexafluoride (SF6); toxic byproducts

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Computer Applications in Electrical Engineering
• Rocznik: 2014
• Tom: Vol. 12
• Strony: 206--216
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Opydo W.

• Poznań University of Technology 60-965 Poznań, ul. Piotrowo 3a

autor

Juszczyk Z.

• Poznań University of Technology 60-965 Poznań, ul. Piotrowo 3a

autor

Stawicki J.

• Poznań University of Technology 60-965 Poznań, ul. Piotrowo 3a

autor

Opydo-Szymaczek J.

• Poznań University of Medical Science Department of Pediatric Dentistry 60-812 Poznań, ul. Bukowska 50

Bibliografia

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