Electrical Properties and Lifetime Prediction of an Epoxy Composite Insulation Material after Hygrothermal Aging
Abstract
:1. Introduction
2. Materials and Methods
2.1. Volume Resistivity
2.2. Electrical Permittivity and Dielectric Loss
2.3. Breakdown Strength
3. Results
3.1. Volume Resistivity
3.2. Electrical Permittivity and Dielectric Loss
3.3. AC Breakdown Strength
4. Discussion
4.1. Lifetime Prediction
4.2. Variations in Dielectric Parameters with Aging Time
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Conflicts of Interest
References
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Aging Temperature (°C) | Aging Time (Hours) |
---|---|
95 | 180, 420, 660, 1000 |
85 | 185, 501, 720, 1010, 1501, 2008, 2538, 2944 |
75 | 502, 1006, 1511, 2013, 2469 |
Aging Conditions | Scale α (kV/mm) | Shape β |
---|---|---|
Unaged | 15.56 | 17.14 |
95 °C–95%RH–180 h | 16.88 | 18.83 |
95 °C–95%RH–420 h | 15.54 | 21.70 |
95 °C–95%RH–660 h | 15.90 | 10.29 |
95 °C–95%RH–1000 h | 16.93 | 18.90 |
85 °C–95%RH–185 h | 15.08 | 10.59 |
85 °C–95%RH–501 h | 15.64 | 8.34 |
85 °C–95%RH–2008 h | 16.75 | 7.46 |
85 °C–95%RH–2944 h | 15.28 | 9.15 |
75 °C–95%RH–1006 h | 17.02 | 10.00 |
75 °C–95%RH–1511 h | 16.57 | 9.22 |
75 °C–95%RH–2013 h | 16.73 | 9.34 |
75 °C–95%RH–2469 h | 16.24 | 14.28 |
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Yang, Y.; Ma, J.; Yap, M.; Wang, Q.; Chern, W.K.; Foo, Y.S.E.; Chen, Z. Electrical Properties and Lifetime Prediction of an Epoxy Composite Insulation Material after Hygrothermal Aging. Polymers 2023, 15, 1942. https://doi.org/10.3390/polym15081942
Yang Y, Ma J, Yap M, Wang Q, Chern WK, Foo YSE, Chen Z. Electrical Properties and Lifetime Prediction of an Epoxy Composite Insulation Material after Hygrothermal Aging. Polymers. 2023; 15(8):1942. https://doi.org/10.3390/polym15081942
Chicago/Turabian StyleYang, Yan, Jielin Ma, Malvern Yap, Qi Wang, Wen Kwang Chern, Yi Shyh Eddy Foo, and Zhong Chen. 2023. "Electrical Properties and Lifetime Prediction of an Epoxy Composite Insulation Material after Hygrothermal Aging" Polymers 15, no. 8: 1942. https://doi.org/10.3390/polym15081942