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The use of organic materials in making polymeric insulators has many advantages. However, it also has a draw back that organic compounds degrade in outdoor environment by many factors. The major issue is that how long they will perform satisfactorily before the end of their useful life. This paper present the result of multistress lab aging on HTV SiR insulators. The environment used was of Islamabad,...
Materials used in the manufacture of polymeric insulators were ethylene propylene diene monomer (EPDM) and silicone rubber (SR). Non ceramic insulators have shown good performance even in hostile environments. Silicone rubbers helped considerably to eliminate the contamination problem. Silicone rubbers have low surface energy which offers a hydrophobic surface, which does not wet the surface, offering...
Summary form only given, as follows. Diagnostic measurements performed for surge arresters are normally studied by evaluating their suitability to detect ageing and degradation of metal oxide material. The suitability of different methods for revealing internal moisture in arresters has not been studied much. This aspect is considered in the paper based on measurement results obtained during a 1.5...
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