Influence of vibrations on dielectric properties of "Epoxy-Mica-Glass" insulation

• Autorzy: Subocz L.
• Konferencja: II International Conference on Advances in Processing, Testing and Application of Dielectric Materials, September, 15-17, 2004, Wrocław
• Języki publikacji: EN

Abstrakty

EN

The paper presents effect of vibration on the dielectric properties of "epoxy-mica-glass" insulation of the HV stator bar. I The measurements of dielectric dispersion were carried out for time domaine and frequency domaine in range 10^-4-10⁶ Hz. The tests have proved that there occurs a viscoelasticity phase in insulation in which the relaxation shows the features characteristic for structures where the crosslinking processes have not been completed. The measurements ofj isothermal polarization and depolarization currents have proved that in the insulation under testing there occurs the high relaxation originating from thermally activated carrier loads, where the latter relaxation prevails over the other dipole structures. It has been confirmed that the vibrations induce an increase in insulation conductivity as well as an increase in j loads of structural polarity and at the phase boundary. The results obtained indicate that vibrations cause mainly the 1 quantitative increase of relaxation domains and aggravate the insulation morphology structure ordering degree. Further on, it j has been confirmed that the analysis of insulation dielectric parameters in domains of frequency and time leads to sirnila conclusions.

Słowa kluczowe

EN

epoxy-mica-glass insulation; VLF spectroscopy; vibration

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
• Rocznik: 2004
• Tom: Vol. 40, nr 15
• Strony: 212--216
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Subocz L.

• Institute of Electrical Engineering, Technical University of Szczecin, Poland

Bibliografia

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