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Portable tester and related method for determining the primary winding to secondary winding current ratio of an in-service current transformer
Portable tester and related method for determining the primary winding to secondary winding current ratio of an in-service current transformer
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机译:用于确定在用电流互感器的一次绕组与二次绕组电流比的便携式测试仪及相关方法
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摘要
A portable tester for determining the primary winding to secondary winding current ratio of a current transformer while that transformer is in service, including a current probe having a split core positionable around an active power line supplying current to the transformer, an AC to DC converter to convert the AC output of that probe to a first DC signal, another AC to DC converter for converting the secondary output of the current transformer under test to a second DC signal, and a ratio meter for converting the first and second DC signal into a visual display of the ratio of those signals. A mechanism is provided for assuring proper location of the decimal point on the ratio meter. Polarity and burden testing is also provided.
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