Analysis of Transformer Tangled Winding Joints Open Welding Accident

Through analysis of 66kV transformer tangled winding connector open welding faults, the coordination of oil chromatographic analysis and electrical test can be used to find the defect and the location. It clarified the tangled windings of the transformer joint diagnosis of full open welding process in detail, and pointed out the direction for the future to find and the troubleshooting.