engleski

Local Overheating of Transformers with High Currents

Paper analyzes the impact of lead arrangements on losses and temperatures in structural steel parts of three-phase transformers. Six different lead arrangements of low voltage delta connected windings are considered in 3D FEM models. From calculation results it is possible to understand advantages and disadvantages of different lead arrangements. The analysis is finalized with a short presentation of the influence of magnetic shielding height on temperature and loss values.

transformer; coupled calculation; local overheating; high current leads

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