Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Transformer testing
Reexamination Certificate
2007-06-05
2007-06-05
Nguyen, Vincent Q. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Transformer testing
C324S547000, C324S076110
Reexamination Certificate
active
11513517
ABSTRACT:
A current transformer test method implemented using a test device, is useful to verify proper CT installation and operation, and does not rely on the generator (or other system) to be in a state of relatively high assembly. The test device allows a current transformer to be tested by supplying an alternating current (AC) signal to a primary winding of the current transformer to thereby induce an AC signal in a secondary winding of the current transformer. The test device is used to simultaneously monitor the phases of the supplied AC signal and the induced AC signal so that a determination can be made as to whether the current transformer secondary winding is properly installed relative to the current transformer primary winding, and to simultaneously monitor the current magnitudes of the supplied AC signal and the induced AC signal so that the turns ratio of the current transformer can be determined.
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Cook John S.
Davis Randall D.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz
Nguyen Vincent Q.
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