This article presents direct σDC and alternating σ (f) current conductivity measurements
obtained by the frequency domain spectroscopy (FDS) method on cellulose-transformer oil …

The paper presents an analysis of test results by Frequency Domain Spectroscopy (FDS) of
the loss tangent (tgδ) in electrotechnical pressboard impregnated with insulating oil and …

The aim of this study was to determine the frequency–temperature dependence of the AC
conductivity and relaxation times in humid electrical pressboard used in the insulation of …

The paper presents results of testing permittivity of an oil-impregnated electric pressboard
containing water nanoparticles depending on AC frequency, moisture content level and the …

The paper presents a model of hopping conductivity at direct and alternating current,
developed on the basis of the quantum phenomenon of electron tunnelling between …

The paper investigated the influence of temperature on the frequency dependence of the
conductivity of cellulose-ester insulation of power transformers containing nano-drops of …

The study determines the frequency–temperature dependence of the conductivity of a moist
solid insulation component of power transformers, impregnated with the innovative bio-oil …

This paper presents the results of the study of the direct current (DC) and alternating current
(AC) electrical properties of an electrical pressboard–bio-insulating oil–water composite in a …

In this study, the conductivity and permittivity of electrical pressboard—insulating liquid—
water composites were investigated, and the electrical properties of the composites and …

Influence of the humidity on dielectric properties of composites nanocrystalline cellulose–
triglycine sulfate in weak measuring field (1 V· cm− 1) was investigated from room …