Leakage Current and Charge in RTV Coated Insulators Under Pollution Conditions
##plugins.themes.academic_pro.article.main##
Abstract
Room temperature vulcanizing (RTV) silicone rubber coating has excellent leakage current suppression characteristics. It is used extensively on porcelain and glass insulators in pollution prone areas as an anti-pollution measure. A pollution aging chamber has been fabricated and an on line 4-channel personal computer (PC) based data acquisition system has been developed to conduct tests on RTV coated porcelain samples. A study of the dependence of the leakage current and the charge on the flow rate, conductivity and pressure of the solution forming the fog is reported. It was observed that a higher charge and a higher average leakage current were obtained at a higher flow rate and a higher conductivity. The results with coated HV insulators are consistent with those published in the literature with RTV coated fiber glass reinforced plastic (FRP) rods.
##plugins.themes.academic_pro.article.details##
How to Cite
Devendranath, D., Channakeshava, & Rajkumar, A. D. (2004). Leakage Current and Charge in RTV Coated Insulators Under Pollution Conditions. Power Research - A Journal of CPRI, 25–31. Retrieved from https://cprijournal.in/index.php/pr/article/view/982
References
- Fon'est, J.S., Lambeth, RT. and Oakeshott, D. R, “Research in the Rerformance of High Voltage Insulators in Polluted Atmospheres”, Pwc. I EE, 107 A, p. 172, 1960.
- IEEE Dielectric and Electrical Insulation Society’s Outdoor Service Environment Committee S-32-3 paper, “Protective Coatings for Improving Contamination Performance of Outdoor High Voltage Ceramic Insulators”, Paper 94 WM 096-8 PWRD, New York, January 30 - February 3, 1994.
- Chang, J.W. and Gorur, R.S., “Surface Recovery of Silicone Rubber Used for HV Outdoor Insulation”, IEEE Trans. DEI, V. 1,1994, pp. 1039-1046.
- Kim, S.H. and Hackam, R., “Effects of Saline Water Flow Rate and Air Speed on Leakage Current in RTV Coatings”, IEEE Trans. PD, V. 10, 1995, pp. 1956-1964.
- Kim, S.H., Cherney, E.A. and Hackam, R. “Effects of Filler Level in RTV Silicone Rubber Coatings in HV Insulators”, IEEE Trans. EI. V27, 1992, pp. 1065-1072.
- Aradhya, R.S.S., “Studies of Pollution Performance of Metal Oxide Surge Arresters”, Ph.D., dissertation, Indian Institute of Science, Bangalore, 1993.
- Devendranath, D., Mohan Rao, N.S., Channakeshava and Rajkumar, A.D., “Ageing studies on RTV coated insulator in salt-fog pollution”, IEEE PES Winter Mtg, Singapore, paper no.WM - 68, 2000.
- Kim, S.H., Cherney, E.A., Hackam, R. and Rutherford, K.G., “Chemical Changes at the Surface of RTV Silicone Rubber Coatings on Insulators During Dry Band Arcing”. IEEE Trans. DEI, V. 1, 1994, pp. 106-123.
- Kim, S.H., Cherney, E.A. and Hackam, R., “Hydrophobic Behavior of Insulators Coated with RTV Silicone Rubber”, IEEE Trans. EL, V. 27, 1992, pp. 610-622.
- Cherney, E.A., Hackam, R. and Kim, S.H., “Porcelain Insulator Maintenance with RTV Silicone Rubber coatings”, IEEE Trans. PD, V.7, 1992, pp. 713-719.
- Carberry, R.E. and Schneider, H.M., “Evaluation of RTV Coating for Station Insulators Subjected to Coastal Contaminations” , IEEE Trans. PD, V. 4, 1989, pp. 577-585.
- Kim, S.H., Cherney, E.A. and Hackam, R., “The Loss and Recovery of Hydrophobicity of RTV Silicone Rubber Insulator Coatings”, IEEE Trans. PD, V 5, 1990, pp. 1491-1500.
- Kim, S.H., Cherney, E.A. and Hackam, R., “Effects of Filler Level in RTV Silicone Rubber coatings Used in H. V. Insulators”, IEEE Trans. El, V. 27, 1992, pp. 1065-1072.
- Gorur, R.S., Karady, G.G., Jagota, A., Shah, M. and Yates, A.M., “Aging in Silicone Rubber Used for Outdoor Insulation”, IEEE Trans. PD, V. 17, 1992, pp. 525-538.
- Swift, D.A., “ac Flashover Mechanism of Water Droplets on an Hydrophobic Insulator”, 8th Int. Symps. on H. V. Engineering (ISH), Paper 44.09, 1993, pp. 1-4..
- Spellman, C.A., Young, H.M., Haddad, A., Rowlands, A.R. and Waters, R.T., “Survey of Polymeric Insulator Aging Factors”, 11th Int. Symps. on H. V. Engineering (ISH), Paper 4.160 PI, 1999, pp. 1-4.