Mb. Fatmi et al., PPS ELECTRICAL-PROPERTIES FOR POWER TRANSFORMERS, IEEE transactions on dielectrics and electrical insulation, 5(4), 1998, pp. 618-621
In order to find a material that can be used as wrapped insulating fil
m in the power transformer industry, we have tested polyphenylene sulf
one which is film characterized by a high thermal resistance, a high c
hemical resistance and an outstanding mechanical strength. The thermal
degradation study is of major importance in this application, so ther
mal aging test in the presence of silicone oil at 160 degrees C was ca
rried out in reactor. Dielectric breakdown, partial discharges, conduc
tivity, permittivity and dielectric loss measurement were studied in t
he investigation.