發布日期:2022-10-25 點擊率:69
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控制保護電器的觸頭接點,一般常用銀合金制成。如果采用其它金屬,在電弧高溫下容易氧化,從而增大接觸電阻,流過電流時使觸點溫度升高,溫度升高又促使接點更加氧化,這樣惡性循環作用最終將導致觸點燒壞。如果觸點采用銀合金,由于銀不易氧化,即使氧化層仍能保持很好的導電性,不致使觸點燒壞,能延長觸點壽命。所以接觸器和其它電器的觸點多采用銀合金制成。
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