2010 10th IEEE International Conference on Solid Dielectrics 2010
DOI: 10.1109/icsd.2010.5568077
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Abstract: F. (2010). Dielectric spectroscopy study of thermally-aged extruded model power cables. 2010 10th IEEE International Conference on Solid Dielectrics (ICSD), pp. 1-4. doi: 10.11091-4. doi: 10. /ICSD.2010 This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract-"Model" extruded power cables, having a much reduced geometry but using the same extrusion techniques and materials as full-sized cables, have been examined using dielectric spectros… Show more

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Cited by 13 publications
(5 citation statements)
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“…Finally, for the data presented in figure 7(b), evaluation of the slope of log/log plots of ε″ against frequency reveals a power law behaviour with an exponent ranging from ~−0.3 (sample aged for 4 h) to ~−0.5 (sample aged for 6 h). Since these values fall above the value of −1 [64] expected for DC conduction, we suggest that the imaginary dielectric data obtained from samples aged for times greater than 3 h presented in figure 7(b) are best interpreted in terms of a combination of charge transport and polarisation phenomena. Figure 8 shows exemplar time dependent DC conduction data, which were obtained from differently aged samples with the oxidised surface in contact with the cathode.…”
Section: Dielectric Responsementioning
confidence: 65%
“…Finally, for the data presented in figure 7(b), evaluation of the slope of log/log plots of ε″ against frequency reveals a power law behaviour with an exponent ranging from ~−0.3 (sample aged for 4 h) to ~−0.5 (sample aged for 6 h). Since these values fall above the value of −1 [64] expected for DC conduction, we suggest that the imaginary dielectric data obtained from samples aged for times greater than 3 h presented in figure 7(b) are best interpreted in terms of a combination of charge transport and polarisation phenomena. Figure 8 shows exemplar time dependent DC conduction data, which were obtained from differently aged samples with the oxidised surface in contact with the cathode.…”
Section: Dielectric Responsementioning
confidence: 65%
“…The peroxide byproduct levels, measured by Borealis using high-performance liquid chromatography (HPLC), before and after these degassing processes are shown in Table 1. In order to study the ageing effects, some of the degassed cable samples underwent an accelerated thermal ageing regime of 135°C for 60 days (1440 hours) [9]. In Figure 5, the effect of ageing on cables without an outer semicon layer can be observed.…”
Section: Samplesmentioning
confidence: 99%
“…As in the earlier discussion, the approximations in (12) and (13) reflect the limit of tan 2 δ approaching 0 for tan δ in the range 10 −3 − 10 −1 , ε air = 1, and the fact that ΔRe V r and ΔIm V r should be of the same order. For the spatial ratio d r ≃ 1, the relative uncertainty in both ε m ′ and tan δ increase monotonically with ε m ′ .…”
Section: Contribution Of Uncertainties Due To Electrical Noisementioning
confidence: 80%
“…Dielectric spectroscopy, the frequency response of εm, connects the empirical electrical response and associated polarisation models/mechanisms with independently determined structural and morphological properties of the material under question [10, 11]. Differences in the dielectric spectra of unaged and aged materials can, therefore, provide insight into the onset and development of degradation [12, 13].…”
Section: Introductionmentioning
confidence: 99%