对电流元件,基准值为电流互感器(CT)的一次或二次的标称电流值。当电流源是两个不同变比的电流互感器的电流之和,其“基准值”将是共同的二次电流或-次电流,并按此归算和电流。(即归算到两个输入CT中额定值较大者)。例如,CT1=300/5A,CT2=10015A,为了求两个电流值的和,就得把CT2的变比归算到CT1的变比。在这种情况下,“基准值”为二次侧的5A或一次侧的300 A。
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