This paper presents a survey to the design procedures of dry cooling moving limb arc welding transformer types. Two different methods are used for this purpose. The first method is based on analytical approach, while the second method is based on numerical approach, finite element method (FEM). A two dimensional finite element method is used to compute the flux distribution in each transformer parts. The transformer parameters, losses and losses distributions, electromagnetic force on the windings and force distribution, temperature rise and performance characteristics during the design process are calculated, also. The nonlinearly and saturation of iron core are taken into account by using the actual B-H curve of the iron core. This procedures is established and used to build and analyze different types and ratings of transformers. Theoretical, analytical and FEM, and experimental characteristics are carried out on 400A welding transformer and a comparison is given between them. It has been shown that the FEM method gives better results than analytical method, where a good agreement is obtained between the predicted characteristics that calculated using FEM and experimental ones.
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