This paper introduces the use of thin film copper strips as a potential approach for online quantification of corrosive sulphur content in transformer insulating oils. The progression of sulphur corrosion is tracked by means of the changes in resistance of the thin film copper strips which is measured based on low-resistance measurements using the four-wire measurement method. The results show that the change of resistance of thin film copper is a function of the level of corrosive sulphur compounds (i.e. in ppm) and the bulk temperature of the oil.

中文翻译：

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大型自耦变压器中腐蚀性硫含量的在线定量

本文介绍了使用薄膜铜带作为在线量化变压器绝缘油中腐蚀性硫含量的潜在方法。硫腐蚀的进展是通过薄膜铜带的电阻变化来跟踪的，这是基于使用四线测量方法的低电阻测量来测量的。结果表明，薄膜铜的电阻变化是腐蚀性硫化合物水平（即ppm）和油体温度的函数。