The causes of deformation in welding of transformer tank and precautionary steps are expounded in this paper. Its correction methods are introduced.

分析了变压器油箱焊接时变形产生的原因，提出了预防焊接变形的措施，介绍了焊接变形的矫正方法。

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The paper presents the advantages and disadvantages of vacuum drying in transformer tank, analyses machine set's disadvantages during its used, and puts forward the solving measures.

介绍了对变压器油箱内实施抽真空干燥时的优缺点，分析了真空机组改进前在使用过程中存在的问题，对此提出了解决措施。

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In order to protect the instrument and the experimentalist when the transformer tank vibration signal is on-line measured, a set of optical transmitting system is designed in this paper.

在线测量变压器器身振动信号时，为保护后续仪器以及人身安全，设计了一套光电传输系统。

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