div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: cnica · PDF fileA norma IEC 61672-1 cancela e substitui a IEC 651 Desde então a International Electrotechnical Commission — IEC — considera a IEC 651 como norma src=https:reader035fdocumentsinreader035viewer20220817235a9e8a0b7f8b9a76178b7b6dhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv