The 28-kV, novel, environmental-friendly, thermoplastic elastomeric insulators were tested under slightly modified IEC 1109 5000-h (Annex C) conditions for their long-term performance. The modifications were made to more closely represent the actual service environment than the conditions used in the IEC. Various stresses applied include UV-A radiation, heat, rain, clear mist and salt fog, in addition to electrical. After 5000-h aging, there was discoloration, loss of hydrophobicity, and a loss of hydrocarbon bonds. Overall, the insulators looked intact despite the molecular and microstructural changes
No takes yet. Share an insight, caveat, or question.
Sundararajan et al. (2007) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: