System and method for modulating a power supply in a relay test system
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United States of America Patent
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Jul 10, 2012
Issued Date -
N/A
app pub date -
Jun 13, 2008
filing date -
Jul 30, 2007
priority date (Note) -
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Abstract
A system and method are provided for using a class H amplifier in a tester for testing protective relaying equipment, particularly useful in conducting end to end testing. The class H amplifier is configured to provide separation between the amplifier and the power supply of the tester using a DSP which also offers flexibility for programming algorithms to realize efficiencies in matching the waveform to the output rail. End to end testing is also improved by including expected results for the test case used by the tester to enable the tester to determine how close the results are to what is expected. This offers time savings and is less prone to error in that the expected results can be predetermined by a qualified/experienced professional.
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