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保定通力電器設備有限公司

簡體中文English加入收藏
PD系列出口型跌落式熔斷器

PD1系列出口型33kV~36kV跌落式熔斷器

瀏覽次數:

產品概述:
  跌落式熔斷器及拉負荷跌落式熔斷器是戶外高壓保護電器。它裝置在配電變壓器高壓側或配電線支干線路上、用作變壓器和線路的短路,過載保護及分、合負荷電流。跌落式熔斷器由絕緣支架和熔絲管二部分組成,靜觸頭安裝在絕緣支架兩端,動觸頭安裝在熔絲管兩端,熔絲管由內層的消弧管和外層的酚醛紙管或環氧玻璃布管組成。拉負荷跌落式熔斷器增強彈性輔助觸頭及滅弧罩,用以分、合負荷電流。
跌落式熔斷器在正常運行時,熔絲管借助熔絲張緊后形成閉合位置。當系統發生故障時,故障電流使熔絲迅速熔斷,并形成電弧,消弧管受電弧灼熱,分解出大量的氣體,使管內形成很高壓力,并沿管道形成縱吹,電弧被迅速拉長而熄滅。熔絲熔斷后,下部動觸頭失去張力而下翻,鎖緊機械,釋放熔絲管,熔絲管跌落,形成明顯的開斷位置,當需要拉負荷時,用絕緣桿拉開動觸頭,此時主動,靜助觸頭仍然接觸,繼續用絕緣桿拉動觸頭,輔助觸頭也分離,在輔助觸頭之間產生電弧,電弧在滅罩狹縫中被拉長,同時滅弧罩產生氣體,在電流過零時,將電弧熄滅。

技術參數:

產品結構圖:

 
 
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