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鑒別電表是否燒壞的方法

發布日期:2022-04-26 點擊率:148

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1.在日常使用中發現電能表不能正常運轉或抄表中發現問題應首先懷疑電能表本身的問題。 

  2.看看電能表外觀有什么異常。首先看玻璃里面有沒有像白、黃色及線圈絕緣燒損的異物。如果有,說明表已經燒壞。 
 
  3.如果發現表尾燒焦,塑料表蓋變形,表異常運轉,應看看是否有電源線短路過。如果短路,再看保險絲熔斷沒有,保險絲沒熔斷,這無疑是保險絲已超過電能表的額定電流值。 

  4.當發現電能表異常運轉時,應知道是否大功率電器同時使用,或者是負荷(功率)已超過電能表的額定容量。例如:2a的電能表,其額定容量應為440w,如果是超過額定容量,就有可能將電能表燒壞。 

  5.電能表不轉,而電流線圈基本完好。如果用萬用表電阻檔測試電壓線圈,萬用表指針不動,這證明電壓線圈燒斷。

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