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絕緣材料的耐熱等級有哪些

絕緣材料的耐熱等級有哪些
發布者: 發布時間:2013/11/10 星期日 閱讀:1次

  當溫度很高時。絕緣材料的性能惡化。絕緣電阻降低,耐熱及機械強度降低。介質損耗、應力變形增大。因此,提高絕緣材料的耐熱性能對保證電機安全運行延長使用壽命有重要意義。

  為保證絕緣材料安全和長久地可靠工作,規定了各種材料的最高允許溫度。

  耐熱性能可分為Y,A,E,B,F,H,C七個等級。各級的最高允許溫度分別為:90℃ 、105℃、120℃、130℃、155℃、180℃、180℃以上。


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