AC and DC Electrical Aging of Polyethylene

Crine, J.‐P.

doi:10.1109/ceidp.2008.4772797

Cited by 6 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dielectric breakdown is related to the amount of space charge contained in the material. Indeed, in this study the electrical field applied to the specimens is about 1MV/cm and space charge can be built at the polymercopper interface and affects breakdown dielectric, as indicated by Mammeri et al [20] and Malec [21], It is reported that space charge content in samples aged under AC field is always significantly shorter than that under DC field [19]. DC breakdown voltage belongs on the polarity.…”

Section: Discussionmentioning

confidence: 58%

See 1 more Smart Citation

Breakdown Behaviour of Polyesterimide Enamelled Wire Subjected to Thermal Aging

Mohammed¹

2022

ACSM

View full text Add to dashboard Cite

This work concerns the effect of thermal aging on breakdown voltage of polyesterimide enamelled copper wire. Samples are aged in ovens at different temperatures. After aging, a large population of samples were taken and submitted to dielectric breakdown under AC and DC voltages. The material was characterized by TGA and DSC. The values of failure were treated statistically using Weibull model. The study shows a decrease in breakdown voltage with respect to aging time. DC breakdown voltage is greater than AC breakdown voltage. Under DC stress, breakdown voltage is related to the polarity. TGA thermograms exhibit one decomposition stage. The beginning temperature of the mass loss and the residue are greater in the case of pure samples. The glass transition temperature decreases as a function of aging time resulting to a plasticization in the material. In long-term, the decomposition occurs by a scission reaction of imide - bond and ester – bond at interface of polyesterimide-copper. A through discuss of the obtained results is given as well.

show abstract

Section: Discussionmentioning

confidence: 58%

“…It is allotted, in part, to the dissipated energy difference under the two types of electrical field and, in the second place, due to the fatigue induced by the AC voltage. This phenomenon has been pointed out by Crine [19]. The dielectric breakdown is related to the amount of space charge contained in the material.…”

Section: Discussionmentioning

confidence: 91%

Breakdown Behaviour of Polyesterimide Enamelled Wire Subjected to Thermal Aging

Mohammed¹

2022

ACSM

View full text Add to dashboard Cite

show abstract

“…Previous works on solid insulation showed that the breakdown voltage under DC ramp is higher than obtained under AC ramp [23][24][25][26][27]. In AC ramp the phenomenon is attributed in a certain manner to the dissipated energy due to the fatigue induced by the alternating stress [24,28]. The breakdown voltage under DC ramp depends on the polarity [24,29,30].…”

Section: Discussionmentioning

confidence: 86%

Breakdown strength measurements on cylindrical polyvinyl chloride sheaths under AC and DC voltages

Laifaoui

Herzine

Zebboudj

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

In this work, we study the effect of the applied voltage form and its rise speed on breakdown voltage of polyvinyl chloride sheaths. We first present the statistical model of Weibull used for processing the results, then we describe the experimental devices. We finally study the evolution of the nominal breakdown voltage with 8 different rise ramps up to 4.75 kV.s -1 and under different forms (AC 50 Hz, positive and negative DC voltage). A population of 50 samples has been used for calculating the mean breakdown field at each profile voltage.

show abstract