End-of-Life Evaluation of RTV Coated Porcelain and Glass Insulators under Pollution Conditions
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Abstract
Ageing of Room Temperature Vulcanising (RTV) silicone rubber coated porcelain and glass disc insulators are reported under combined voltage stress and salt-fog conditions till the loss of hydrophobic properties of RTV coating in an ageing chamber. The electrical characteristics are obtained by online monitoring of leakage current and material characteristics are analysed by Energy Dispersive X-Ray (EDX) analysis. RTV coated glass insulators shattered into pieces after 2600 hours of ageing while RTV coated porcelain after ageing for 4600 hours lost its hydrophobic properties and started behaving like a normal un-coated porcelain disc insulator.
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How to Cite
Saleem, S. A., Amarnath, J., Aravind, K. A., & Devendranath, D. (2009). End-of-Life Evaluation of RTV Coated Porcelain and Glass Insulators under Pollution Conditions. Power Research - A Journal of CPRI, 9–15. Retrieved from https://cprijournal.in/index.php/pr/article/view/957
References
- Devendranath D, Channakeshava and Rajkumar A D, "Leakage Current and Charge in RTV Coated Insulators Under Pollution Conditions", IEEE Trans DEI, 2002, Vol. 9, pp. 294-299.
- Gutman I, Hartings R and Riquel G, "IEC 5000 Hours Ageing Test: Critical Review and Further Test Development", Proceedings of the International Symposium on Electric Power Engineering, Sweden, Vol. High Voltage Technology, pp. 310-315, 1995.
- Carrano de Almeide L E and HyltenCavallius N, "A Model for Thermal Runaway of HVDC Line Insulators", CEPEL Report 2013/80.
- Grouch A G, Swift D A, Parraud R and De Decker D, "Ageing Mechanisms of AC Energised Insulators", 22-203, 26th August–1st September 1990 CIGRE Session.
- "Basic Environmental Testing Procedures, Part 2, Tests Ka. Salt Mist", Publication IEC 68–2–11 (1981).
- Devendranath D, Girija G, Shivkumara Aradhya R S, Gunasekaran B and Bhaskaran A, "Development and Application of a Multi-channel Current Integrator-cum-peak Classifier for Online Monitoring of Leakage Current on RTV Coated Insulators", IEE Proc. GTD, Vol. 152, No. 2, pp. 247-252, March 2005.
- Gutman I, Hartings R, Matsuoka R and Kondo K, "Experience with IEC 1109, 1000h Salt-fog Test: Experience and Suggestions for Improvements", Nordic Insulation Symps., 1996, June 10-12, pp. 389-398.
- Gorur R S, Karady G G, Jagota A, Shah M and Yates A M, "Ageing in Silicone Rubber Used for Outdoor Insulation", IEEE Trans. PD, 1992, Vol. 7, pp. 525-538.