s:c ISOLATJO: JSSYMPOSIUM

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1 ' / s:c ISOLATJO: JSSYMPOSIUM \fe.~~*** UNIVERStTATSBIBUOTHEK HAN^4OVER TECHNtSCHE INFORMAHONSBIBLIOTHEK ODENSE DANMARK

2 INDHOLDSFORTEGNELSE INDLEDNING ELECTRICAL PHENOMENA AT INSULATION BOUNDARIES Andreas Kelen, D.Sc.(Eng.) ASEA AB, Central Laboratories, Vasteras, Sweden. RAPPORTER Elektriske faenomener ved isolationers grsensef lader. Gransefladers indflydelse pa gennemslag. 1. BREAKDOWN PREDICTION IN COMPRESSED SF g G.C.Crichton, I.W. McAllister, A.Pedersen and S. Vibholm Department of Physics, Building 3098, The Technical University, DK-2800 Lyngby, Denmark. FLASHOVER ON A SOLID RESISTANCE SURFACE Prof. C.Huraux, Dr.ing. G.Peyregne and Dr. AM.Rahal Laboratorie de G6nie Electrique, Associe au C.N.R.S. (LA304) University Paul Sabatie - TOULOUSE (France). THE INFLUENCE OF METALLIC PARTICLES AND CONTAMINATION ON THE DC FLASHOVER OF EPOXY RESIN SPACERS IN AIR AND G.Brannstrom E.San Roman A.E.Vlasttfs Royal Inst. of Technology Tech.University of Denmark S Stockholm 70, Sweden DK 2800 Lyngbyf, Denmark j C.4. DC FLASHOVER OF EPOXY RESIN SPACERS IN AIR AND SF 6 / S5. A.E.Vlast<5s E.San Roman G. Brannstrom Techn. University of Denmark Royal Inst. of Technology DK 2800 Lyngby, Denmark S Stockholm 70, Sweden r- - j OVERSLAG LANGS GRENSEFLATEN MELLOM FAST OG FLYTENDJ? ISOLASJON. \ - H.Danielsen oq L.Lundgaaard Elektrisitetsrorsyningens Forskningsinstitutt (EF-1) Norge M.U.Anker Norges Tekniske Hogskole, Norge

3 Mikroskopiske faenomener ved grgnseflader PARTICLE- AND OIL MOTION CLOSE TO ELECTRODE SURFACES Dr. Uno Gafvert ASEA AB, Central Laboratories, Vasteras, Sweden. / (7. THERMOSTIMULATED DEPOLARIZATION CURRENTS ON A DIELECTRIC \ -^ SURFACE Prof. C. Huraux and Dr. B. Despax Laboratoire de G nie Electrique, Associfi au C.N.R.S. (LA304) University Paul Sabatier - TOULOUSE (France).. IAKTTAGELSER AV ELEKTRISKA YTURLADNINGAR I OLIKA ISOLA- TIONSSYSTEM - KOMPANJONFENOMEN. A. Bartnicki H. Bergqvist B.Gerdsberg civ.ing. civ.ing. civ.ing. Hogspanningslaboratoriet, CTH, Sverige Ha jspaendings-track ing 9. THE EFFECT OF SOME FACTORS ON THE RESULTS OF INCLINE PLANE TRACKING TESTS * Dipl.ing. V.K.Jaakkola Oy Stromberg Ab, Vaasa, Finland 10. "MERRY GO ROUND" ACCELERATED TRACKING TEST METHOD? Developing manager H.M.Paulsen Siemens A/S, Trondheim, Norway. Ass.professor K.O.Tangen Technical University, Trondheim (NTH) Norway Lab.ass. K.Rye The Norwegian Research Institute of Electricity Supply (EFI) Trondheim, Norway. Ass.professor J.Sletbak Technical University, Trondheim (NTH) Norway.

4 ldninqspr0vning ll. DELISOLERTE MELLEOMSPENNINGSANLEGG - 12 OG 24 kv. ET FELLES DANSK-NORSK PROSJEKT T.Bartholin K.O.Tangen 3.T.Benjaminsen Siemens A/S NTH/EFI EFI Danmark Norge Norge 12. NEDBRYDNING AF SP NDINGSSATTE EPOXYISOLATORER UNDER EN CYKLISK LANGTIDSPAVIRKNING MED TEMPERATUR OG FUGTIGHED Civ.ing. Esben Larsen, Lektor N.Balslev Stserkstramsafdelingen, bygn. 325 Danmarks tekniske Hejskole DK-2800 Lyngby, Danmark. 13; MALEMETODE TIL BRUG VED VURDERING AF EPOXYISOLATORERS NEDBRYDNINGSFORHOLD UNDER EN CYKLISK LANGTIDSPAVIRKNING MED TEMPERATUR OG FUGTIGHED Civ.ing. Esben Larsen og tek.ing. O.Skilbreid Staerkstromsafdelingen, bygn. 325 Danmarks tekniske Hojskole DK-2800 Lyngby. Danmark. 14. AFPR0VNING I FORBINDELSE MED UDVIKLING AF ISOLATIONS- SYSTEMER FOR KOMPAKTE KAPSLEDE H0JSPiENDINGSSNL G. Afd.ing., lie.tech. Bohdan Luczyrfski A/S LK-NES, Kabenhavn SIMULTANEOUS THERMAL/ELECTRICAL AGING OF POLYMER INSULATION Siv.ing. H.Faremo, siv.ing. H.Kulbotten The Norwegian Research Institute of Electricity Supply, EFI, Trondheim, Norway. Cl6. GASSING PROPERTIES OF TRANSFORMER OILS Tekn.lic. Marja-Liisa Surakka and Dipl.ing. V.K.Jaakkola OY StrSmberg Ab, Vaasa, Finland THE EVALUATION OF THE THERMAL ENDURANCE OF ELECTRICAL INSULATING MATERIALS - SOME NEW TRENDS IN IEC Andreas Kelen, D.Sc. (Eng.) ASEA, Central Laboratories, VSSsterSs, Sweden.

5 C 18. AFKORTEDE LEVETIDSFORS0G N.Balslev Staerkstramsafdelingen Danmarks tekniske Hajskole DK-2800 Lyngby, Danmark. Partielle udladninger 19. OPTICAL MEASUREMENTS OF PARTIAL DISCHARGES IN OPEN CAVITIES IN POLYETHYLENE Bo Svarrer Hansen Frede Levring High Voltage Laboratory, Electri Power Engineering Dept., Technical University of Denmark, Bldg. 329, DK-2800 Lyngby, Denmark. 20. DETECTION OF PARTIAL DISCHARGES AND FREE PARTICLES IN GAS INSULATED EQUIPMENT BY ACOUSTIC EMISSION TECHNIQUES R.Hegerberg and L.Lundgaard The Norwegian Research Institute of Electricity Supply, Trondheim, Norway and G.Bvstun Electrical Engineering Dept., Norwegian Institute of Tech nology, Trondheim, Norway. C21. THE INFLUENCE OF SOME MATERIAL PARAMETERS ON THE ABILITY > OF A CAVITY SURFACE TO RESIST PARTIAL DISCHARGES. Determined by the Development in Pulse Distributions and by Microscopic Observations using a Scanning Electron Microscope. M.Henriksen, P.O.Henk, N.Balslev Electric Power Engineering Department Technical University of Denmark DK-2800 Lyngby, Denmark

6 Hejspandingsmaleteknik og isolationskoordinering C 22. UP-AND-DOWN METODEN I NY, ANALYTISK VURDERING Civ.ing. Peter Benn Thomsen Stserkstramsafdelingen, bygn. 325 Danmarks tekniske Hejskole DK-2800 Lyngby, Danmark. 23. METALLOKSYDAVLEDEREN EGENSKAPER NORMPR0VER ANVENDELSER Overing./dosent II A.Schei Elektrisitetsforsyningens Forskningsinstitutt (EFI) Trondheim, Norge