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直尺

普通塑殼自動開關的電流參數

發布日期:2022-07-14 點擊率:75

  1.框架額定電流:指開關可以長期通過的電流.

  2.脫扣器額定電流,它又分為兩個參數:

  (1)熱脫扣器額定電流,它等于脫扣器額定電流.

  (2)瞬時脫扣器整定電流,它以脫扣器額定電流的倍數來表示.

  3.短路分斷電流,它由開關的型號確定,也分為兩個參數:

  (1)額定運行短路分斷電流.

  (2)額定極限短路分斷電流. 

  如: DZ20G——200/3300 脫扣器120A 
  表示:開關框架額定電流為200A,熱脫扣器額定電流為120A,瞬時脫扣器整定電流為1200A(10倍),額定運行短路分斷電流為50kA,額定極限短路分斷電流為100kA.


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