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Effect of modified surface structure of impregnated polypropylene film on capacitor dielectric properties during thermal ageing

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The results of ageing tests of biaxialy oriented impregnated capacitor polypropylene films with modified and unmodified surface structure are presented in this paper. The temperature dependence of factor D=tan δ 1/tan δ 0 (where tan δ 1 and tan δ 0 relate to impregnating fluid aged with and without polypropylene film, respectively), the relationship between factor D and the aromatic content of impregnating fluid and time dependence of dielectric strength for both types of film are presented. The possible destroying mechanism of the capacitor dielectric system is given.

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Der Aufsatz stellt die Ergebnisse von Alterungsprüfungen an imprägnierten Polypropylen-Folien für Kondensatoren vor. Es werden die Temperaturabhängigkeit des Quotienten D der tan δ-Werte mit und ohne Polypropylen-Film bezogen auf die Alterung des Imprägniermittels, die Beziehung des Faktors D mit dem Aromatenanteil des Imprägniermittels und die Zeitabhängigkeit der dielektrischen Festigkeit für die beiden Arten des Films behandelt. Der mögliche Mechanismus der Zerstörung des dielektrischen Systems des Kodensators wird angegeben.

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Received: 4 May 1998

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Andreyev, A., Jevtić, M. & Zhuravleva, N. Effect of modified surface structure of impregnated polypropylene film on capacitor dielectric properties during thermal ageing. Electrical Engineering 81, 271–274 (1998). https://doi.org/10.1007/s002020050050

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  • DOI: https://doi.org/10.1007/s002020050050

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