%0 Generic %1 ansorge2008evaluation %A ANSORGE, S. %A CAMENZIND, A. %A PRATSINIS, S. E. %A M.AMMANN, %A F.SCHMUCK, %A PAPAILIOU, K. O. %D 2008 %K Housing Rubber Silicone %T Evaluation of Silicone Rubber Housing Interfaces after Service Exposure and Performance Improvements by Nanofillers enriched Silicone Rubbers %X The paper addresses two experimental investigations - the behaviour and appearance of longitudinal and radial housing interfaces after service exposure as well as the first results on the impact of nanofiller enrichment of standard silicone rubber grades. Housing interfaces are formed between the glass-fibre reinforced rod and housing as well as between individual housing elements. The rod-housing interface is decisive for the function of the insulator; if being untight, moisture can penetrate and can lead to tracking underneath the housing, which looses its function with further accumulation, and a breakdown failure becomes very likely. Interfaces between housing elements are often directly exposed to the environment and can interact with the UV radiation, pollution or environmentally caused electrolytes. On 420 kV-insulators with Silicone Rubber housing having been installed in the Swiss EOS network, the relevant interfaces are investigated using the stringent approval procedures of product standards such as IEC 61109 as well as advanced microscope techniques. The results provide an unambiguous confirmation that no changes of the insulator performance were found after ten years of operational time. Nanfiller enrichment is a current subject for many industrial and non-industrial fields. An increasing number of materials used nowadays for the engineering of high voltage equipment are based on polymer materials. Although there has been generally a significant improvement of these materials over the last decades, there is still potential for further optimised materials, which are tailor-made for a specific application. The paper describes tests conducted with Silicone Rubber samples, in which commercially available fumed silica particles were mixed in. One parameter of the samples is the different specific surface areas of the particles. Another parameter consists in the particle treatment - hydrophilic (unmodified surface) or functionalized by different surface groups. Results from Incline Plane Testing are presented, where the erosion depth and rate of erosion are measured on such modified samples.

@conference{ansorge2008evaluation, abstract = {The paper addresses two experimental investigations - the behaviour and appearance of longitudinal and radial housing interfaces after service exposure as well as the first results on the impact of nanofiller enrichment of standard silicone rubber grades. Housing interfaces are formed between the glass-fibre reinforced rod and housing as well as between individual housing elements. The rod-housing interface is decisive for the function of the insulator; if being untight, moisture can penetrate and can lead to tracking underneath the housing, which looses its function with further accumulation, and a breakdown failure becomes very likely. Interfaces between housing elements are often directly exposed to the environment and can interact with the UV radiation, pollution or environmentally caused electrolytes. On 420 kV-insulators with Silicone Rubber housing having been installed in the Swiss EOS network, the relevant interfaces are investigated using the stringent approval procedures of product standards such as IEC 61109 as well as advanced microscope techniques. The results provide an unambiguous confirmation that no changes of the insulator performance were found after ten years of operational time. Nanfiller enrichment is a current subject for many industrial and non-industrial fields. An increasing number of materials used nowadays for the engineering of high voltage equipment are based on polymer materials. Although there has been generally a significant improvement of these materials over the last decades, there is still potential for further optimised materials, which are tailor-made for a specific application. The paper describes tests conducted with Silicone Rubber samples, in which commercially available fumed silica particles were mixed in. One parameter of the samples is the different specific surface areas of the particles. Another parameter consists in the particle treatment - hydrophilic (unmodified surface) or functionalized by different surface groups. Results from Incline Plane Testing are presented, where the erosion depth and rate of erosion are measured on such modified samples.}, added-at = {2021-03-23T23:26:02.000+0100}, author = {ANSORGE, S. and CAMENZIND, A. and PRATSINIS, S. E. and M.AMMANN and F.SCHMUCK and PAPAILIOU, K. O.}, biburl = {https://www.bibsonomy.org/bibtex/2d90097f3d21fdd25ad0ce280027adf4e/ceps}, interhash = {44508ce6ce393471e6264e369f51709c}, intrahash = {d90097f3d21fdd25ad0ce280027adf4e}, keywords = {Housing Rubber Silicone}, timestamp = {2023-12-21T14:40:24.000+0100}, title = {Evaluation of Silicone Rubber Housing Interfaces after Service Exposure and Performance Improvements by Nanofillers enriched Silicone Rubbers}, year = 2008 }