Comparison on losses and flux distribution among three 3-phase distribution transformers 1000kVA assembled from various amount of layers per stack of transformers core lamination
Date
2007-12-13Author
Ismail, Daut
Dina Maizana, Maiz Ahmad
Shuhaimi, Zakaria
Soib, Taib
Metadata
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This paper describes the results of an investigarion on the effect of different amount of layers per stack of core lamination in the three of 3 phase distribution transformers 1000kVA. The investigation involves the variant of power loss, building factor, total harmonic distortion of flux and flux leakages. The power loss and flux distribution have been measured using no load test in three types of model of setting of core built from the same size and type of M5 (CGO) laminations. The power loss of the transformer core assembled with 1 layer per stack of lamination is 7% better than the power loss of the transformer core assembled with 2 layer per stack of lamination and is also 9% better than the power loss of the transformer core assembled with 3 layers per stack of lamination, at 1.7T, 50 Hz. The flux leakage at the corner joint in the core assembled with 1 layer per stack of lamination is the lowest among the three of the transformer cores, over the whole flux density range. Total harmonic distortion flux is the largest in the transformer core with 3 layers per stack of lamination and smallest in the transformer core with 1 layer per stack lamination. Using 1 layer per stack of lamination of the transformer core.
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