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In a typical power distribution grid, electric transformer power loss typically contributes about 40-50% of the total transmission and distribution loss. Energy efficient transformers are therefore an important means to reduce transmission and distribution loss.〔B. Kennedy, “Energy Efficient Transformers” McGraw-Hill, 1998.〕 With the improvement of electrical steel (silicon steel) properties, the losses of a transformer in 2010 can be half that of a similar transformer in the 1970s. With new magnetic materials, it is possible to achieve even higher efficiency. The amorphous metal transformer is a modern example.〔(J. Li, “Use of Energy Efficient Transformers in Asia”, presented in ''Asian Energy Conference 2000'', Hong Kong )〕 ==Notes and references== 〔 * World's largest Amorphous Metal Power Transformer: 99.31% Efficiency () *(Amorphous Metals in Electric-Power Distribution Applications ) * Australian Mandatory(Efficiency Requirements for Distribution Transformers ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「energy efficient transformer」の詳細全文を読む スポンサード リンク
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