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科普知識
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電流傳感器

提高霍爾電流傳感器霍爾電流傳感器的方技術(shù)方法

發(fā)布日期:2022-10-09 點(diǎn)擊率:102

  除了安裝接線、即時標(biāo)定校準(zhǔn)、注意霍爾電流傳感器的工作環(huán)境外,通過下述方法還可以提高測量精度:

  1、原邊導(dǎo)線應(yīng)放置于傳感器內(nèi)孔中心,盡可能不要放偏;

  2、原邊導(dǎo)線盡可能完全放滿傳感器內(nèi)孔,不要留有空隙;

  3、需要測量的電流應(yīng)接近于傳感器的標(biāo)準(zhǔn)額定值IPN,不要相差太大。如條件所限,手頭僅有一個額定值很高的傳感器,而欲測量的電流值又低于額定值很多,為了提高測量精度,可以把原邊導(dǎo)線多繞幾圈,使之接近額定值。例如當(dāng)用額定值100A的傳感器去測量10A的電流時,為提高精度可將原邊導(dǎo)線在傳感器的內(nèi)孔中心繞十圈(一般情況,NP=1;在內(nèi)孔中繞一圈,NP=2;……;繞九圈,NP=10,則NP×10A=100A與傳感器的額定值相等,從而可提高精度);

  4、當(dāng)欲測量的電流值為IPN/10的時,在25℃仍然可以有較高的精度。

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