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鉗形表使用方法及注意事項

發布日期:2022-05-29 點擊率:59

  鉗形表初是通過用來測量交流電流的,但是現在萬用表有的功能它也都有,可以測量交直流電壓、電流,電容容量,二極管三極管,電阻,溫度,頻率等等
  鉗形表使用方法
  1、丈量前要機械調零
  2、選擇合適的量程,先選大,后選小量程或看銘牌值估算。
  3、當使用小量程丈量,其讀數還不顯著時,可將被測導線繞幾匝,匝數要以鉗口中心的匝數為準,則讀數=指示值×量程 / 滿偏×匝數
  4、丈量完畢,要將轉換開關放在量程處。
  5、丈量時,應使被測導線處在鉗口的中心,并使鉗口閉合緊密,以減少誤差。
  鉗形表注意事項
  1、被測線路的電壓要低于鉗表的額定電壓。
  2、測高壓線路的電流時,要戴絕緣手套,穿絕緣鞋,站在絕緣墊上。
  3、鉗口要閉合緊密不能帶電換量程

標簽:鉗形表

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