Duval Triangle Method for Power Transformers Diagnostic

New GlobeCore lecture is about Duval triangle method. Duval triangle method – is a graphic method of transformer defect nature determining. 

This diagnostic method was developed in 1974 by well-known Canadian specialist M. Duval. Duval triangle method allows to plot the point on the graph based on the values of the concentrations of three gases (C2H2, C2H4, CH4), represented as a triangle. The triangle area, according to the Duval method, is divided into seven zones. Each zone corresponds to a certain defective condition of the transformer.

In this lecture, we talk about how to draw a Duval triangle and how to identify transformer defects using this triangle.