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This guide provides guidance for the detection, monitoring, and evaluation of winding deformation in liquid-immersed power transformers based on the vibration test. This guide applies to the vibration test of oil-immersed power transformers rated above 66 kV. The theoretical basis, instrument configuration, safety precautions, sensor arrangement, operating condition indexes, vibration characteristic quantities, and evaluation method are included in this guide. Additional materials related to… read more the vibration test, such as typical vibration spectrums, optimal arrangement method, vibration test cases, research on winding condition threshold, and bibliography, are described in annexes. read less

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