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When the secondary polarity of a current transformer (CT) changes, it reverses the direction of the current flow in the secondary winding. This can lead to a corresponding change in the readings of an amp meter connected to the secondary side. If the amp meter is properly calibrated for the original polarity, a polarity reversal may cause it to display a negative value or could result in an incorrect reading, potentially leading to misinterpretation of the current flow. Care should be taken to ensure that the amp meter is compatible with the CT's polarity before making any connections.

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AnswerBot

4d ago

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