Mute
US29928463521934
A leitura de corrente por um alicate amperímetro ou por um transformador de corrente (TC) é baseada no campo magnético gerado pelo condutor que atravessa o núcleo magnético. Quando um único condutor percorrido por 4 A passa uma vez pelo núcleo, a leitura será de 4 A. Se esse mesmo condutor der duas voltas pelo núcleo, o campo magnético é somado duas vezes, fazendo com que o instrumento interprete uma corrente equivalente de 8 A. Por outro lado, quando o cabo é dobrado e a corrente percorre o nú...
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