14 December 2016 Optical registration of transformer oil absorption processes in electrical pressboard nano-capillaries
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Proceedings Volume 10010, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VIII; 100101R (2016) https://doi.org/10.1117/12.2243269
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies 2016, 2016, Constanta, Romania
Abstract
The paper presents designed and built measurement system for measuring electrical pressboard oil absorption speed. During measurements the test bench allows for automatic record of oil level, time, temperature, humidity and atmospheric pressure. Measurements of Nytro Taurus oil, produced by Nynas company, absorption by pressboard, produced by Weidman company, were made.

It has been observed, that the absorption of oil takes place in three stages, duration of which are respectively τ1≈0,66 h, τ2≈109 h and τ3≈524 h. It was established that the time required to complete the oil absorption process takes more than 46 days. This means that at least as much time should take oil impregnation process of pressboard samples made for electrical measurements.
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Przemysław Rogalski, "Optical registration of transformer oil absorption processes in electrical pressboard nano-capillaries", Proc. SPIE 10010, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VIII, 100101R (14 December 2016); doi: 10.1117/12.2243269; https://doi.org/10.1117/12.2243269
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