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Materiale electrotehnice

Materiale electrotehnice. II Conductia electrica 5. Conductia electrica a izolatorilor solizi. Structura disciplinei. 5. Conductia electrica a izolatorilor solizi. 5.1 Notiuni generale 5.2 Conductia ionica 5.3 Conductia electronica in campuri uzuale

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Materiale electrotehnice

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  1. Materiale electrotehnice II Conductia electrica 5. Conductia electrica a izolatorilor solizi Materiale electrotehnice Prof.dr.ing.Florin Ciuprina Facultatea de Energetica, 2009-2010, anul III ISE

  2. Structura disciplinei

  3. 5. Conductia electrica a izolatorilor solizi 5.1 Notiuni generale 5.2 Conductia ionica 5.3 Conductia electronica in campuri uzuale 5.4 Strapungerea izolatorilor solizi

  4. 5. Conductia electrica a izolatorilor solizi 5.1 Notiuni generale 5.2 Conductia ionica 5.3 Conductia electronica in campuri uzuale 5.4 Strapungerea izolatorilor solizi

  5. 5.1 Notiuni generale Curentul prin izolator la aplicarea unei tensiuni continue:

  6. 5.1 Notiuni generale Curent de absorbtie:

  7. 5.1 Notiuni generale Mecanisme de conductie: - electronica - ionica

  8. 5. Conductia electrica a izolatorilor solizi 5.1 Notiuni generale 5.2 Conductia ionica 5.3 Conductia electronica in campuri uzuale 5.4 Strapungerea izolatorilor solizi

  9. 5.2 Conductia ionica Ipoteze: • cristal ionic • conductie datorata ionilor pozitivi din interstitii

  10. 5. Conductia electrica a izolatorilor solizi 5.1 Notiuni generale 5.2 Conductia ionica 5.3 Conductia electronica in campuri uzuale 5.4 Strapungerea izolatorilor solizi

  11. 5.3 Conductia electronica in campuri uzuale

  12. 5. Conductia electrica a izolatorilor solizi 5.1 Notiuni generale 5.2 Conductia ionica 5.3 Conductia electronica in campuri uzuale 5.4 Strapungerea izolatorilor solizi

  13. 5.4 Strapungerea izolatorilor solizi Strapungere: • electrica • intrinseca • prin avalansa de electroni • termica Rigiditatea delectrica:Estr [MV/m] • depinde de: forma si natura electrozilor, forma si grosimea esantionului, frecventa campului electric, temperatura, etc.

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