Evaluation of Thermal Stability of Nomex Brand Paper in Main Transformer of Shinkansen Train Series 100

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  • 新幹線電車用主変圧器中におけるノーメックス紙の熱的安定性の検証
  • シンカンセン デンシャヨウシュ ヘンアツキ チュウ ニ オケル ノーメックスシ ノ ネツテキ アンテイセイ ノ ケンショウ

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Nomex® brand paper has been used as wire wrapping insulation material of main transformers of Shinkansen Train Series 100 with silicone oil. After approximately 12-13 years service, 8 transformers of Series 100 were sampled to evaluate degradation of Nomex® brand paper in terms of tensile strength and intrinsic viscosity. All data were compared with initial data. The result of less degradation shows Nomex® has good thermal stability in silicone oil in the main transformer of Shinkansen Train which were used in very severe condition.

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