A Study of SiR/EPDM Mixtures for Outdoor Insulators

A. Sykaras, V. Rajini, M. Danikas, R. Sarathi

Abstract


This paper deals with the flashover voltages on samples of silicone rubber/ethylene propylene diene monomer (SiR/EPDM) mixtures under the influence of a uniform electric field. Five different mixtures of SiR/EPDM were investigated. Various SiR/EPDM mixtures (100% EPDM, 10% SiR + 90% EPDM, 30% SiR + 70% EPDM, 50% SiR + 50% EPDM, 70% SiR + 30% EPDM, 90% SiR + 10% EPDM, 100% SiR) were tested for different water droplet arrangements, different water conductivities, different droplet volumes as well as different droplet positioning w.r.t. the electrodes. The 50% SiR + 50% EPDM mixture proved to be the best mixture regarding the flashover voltage.


Keywords


SIR; EPDM; insulators; high voltage; polymeric

Full Text:

PDF

References


R. Gorur, “High voltage outdoor insulation technology”, Cont. a. Dyn. Syst., Vol. 44, pp. 131-191, 1994

M. G. Danikas, "Ageing properties of silicone rubber materials used in high voltage composite insulators", J. Elec. Electron. Engg., Austr., Vol.15, No. 2, pp. 193-202, 1995

S. M. Gubanski, A. E. Vlastos, “Wettability of naturally aged silicone and EPDM composite insulators”, IEEE Transactions on Power Delivery, Vol. 5,No. 3, pp. 1527 – 1535, 1990

R. R. Prabu, S. Usa, K. Udayakumar, M. A. Khan, S. S. M. Abdul Majeed, “Electrical insulation characteristics of silicone and EPDM polymeric blends – Part I”, IEEE Trans. Diel. Electr. Insul., Vol. 14, No. 5, pp. 1207-1214, 2007

J. K. Kim, In-Hwan Kim, “Characteristics of surface wettability and hydrophobicity and recovery ability of EPDM rubber and silicone rubber for polymer insulators”, J. Appl. Polymer Sci., Vol. 79, pp. 2251-2257, 2001

O. Fujii, K. Honsali, Y. Mizuno, K. Naito, “A basic study on the effect of voltage stress on a water droplet on a silicone rubber surface”, IEEE Trans. Diel. Electr. Insul., Vol. 16, No. 1, pp. 116-122, 2009

E. Kuffel, W. S. Zaengl, J. Kuffel, High Voltage Engineering: Fundamentals, Eds. Newness, Oxford, UK, 2000

M. Mohseni, M. Geramian, H. Mirzadeh, “Manufacturing and evaluation of EPDM-silicone blends used in housing of high voltage composite insulators”, Proc. 17th Int. Conf. Electricity Distribution, Paper No. 44, Session 1, Barcelona, Spain, 2003

R. Deepalaxmi, V. Rajini, “Performance evaluation of gamma irradiated SiR-EPDM blends”, Nuclear Engineering and Design, Vol. 273, pp. 602-614, 2014

Α. Bairaktari, M. Danikas, X. Zhao, Y. Cheng, Y. Zhang, “Behaviour of Water Droplets Under the Influence of a Uniform Electric Field in Nanocomposite Samples of Epoxy Resin/TiO2”, Engineering, Technology & Applied Science Research, Vol. 3, No. 5, pp. 511-515, 2015

C. Charalambous, M. Danikas, Y. Yin, N. Vordos, J. W. Nolan, A. Mitropoulos, “Study of the Behavior of Water Droplets Under the Influence of a Uniform Electric Field on Conventional Polyethylene and on Crosslinked Polyethylene (XLPE) with MgO Nanoparticles Samples”, Engineering, Technology & Applied Science Research, Vol. 7, No. 1, pp. 1323-1328, 2017

M. G. Danikas, P. Rakitzis, K. Karakoulidis, “Study of parameters related to deterioration phenomena due to water droplets on polymeric surfaces”, J. Electr. Eng., Vol. 57, No. 3, pp. 130-137, 2006

M. G. Danikas, P. Ramnalis, R. Sarathi, “Experimental results on the behavior of water droplets on polymeric surfaces under the influence of electric fields: The case of an inclined test arrangement for PVC, rubber and silicone rubber”, Funktechnikplus Journal, Vol. 1, No.2, pp. 19-39, 2013

K. Karakoulidis, M. G. Danikas, P. Rakitzis, “Deterioration phenomena on polymeric insulating surfaces due to water droplets”, J. Electr. Eng., Vol. 56, No. 7-8, pp. 169-175, 2005

S. C. Kechagia, M. G. Danikas, R. Sarathi, “Water droplets and breakdown phenomena on polymer nanocomposite surfaces under the influence of uniform electric fields”, Malaysian Polym. J., Vol. 8, No. 2, pp. 41-47, 2013

A. Ragab, L. S. Nasrat, S. M. El-Khodary, S. El-Debeiky, “Performance of EPDM cable terminations under various polluted conditions”, International Journal of Innovative Research in Electrical, Electronics, Instrumentation and Control Engineering, Vol. 2, No. 8, pp. 1780-1783, 2014




eISSN: 1792-8036     pISSN: 2241-4487