Е-Публикации
Технически университет - София

Abstract: In this paper testing of a low power transformer in liquid nitrogen is presented. Transformer is cooled to 77 Kin order to reduce electric losses and increase efficiency and rated power. A center tapped step-down transformer is tested. Transformer rated parameters at room temperature are U1= 220 V, U2 =6 V, 12 =500mA. The transformer load characteristics are tested at room temperature and liquid nitrogen temperature environment. Measured results for V-A characteristics for variable load, electric power loss and efficiency are obtained and discussed.

References

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Issue

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