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產品分類

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干式電流互感器

電壓互感器的分類

發布日期:2022-04-18 點擊率:50

  (1)按安裝地點可分為戶內式和戶外式。35kV及以下多制成戶內式;35kV以上則制成戶外式。

  (2)按相數可分為單相和三相式,35kV及以上不能制成三相式。

  (3)按繞組數目可分為雙繞組和三繞組電壓互感器,三繞組電壓互感器除一次側和基本二次側外,還有一組輔助二次側,供接地保護用。

  (4)按絕緣方式可分為干式、澆注式、油浸式和充氣式。干式電壓互感器結構簡單、無著火和爆炸危險,但絕緣強度較低,只適用于6kV以下的戶內式裝置;澆注式電壓互感器結構緊湊、維護方便,適用于3kV~35kV戶內式配電裝置;油浸式電壓互感器絕緣性能較好,可用于10kV以上的戶外式配電裝置;充氣式電壓互感器用于SF6全封閉電器中。

  (5)按工作原理劃分,還可分為電磁式電壓互感器,電容式電壓互感器和電子式電壓互感器。

 

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