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Calibration source for instruments to measure power and negative sequence current of dynamoelectric machines
Calibration source for instruments to measure power and negative sequence current of dynamoelectric machines
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机译:用于测量电动发电机功率和负序电流的仪器的校准源
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摘要
A calibration signal source for instruments to measure power and negative sequence current of a multi-phase electric power generator. Separate signals are provided to represent load current for each phase of the generator ultimately to be tested, and to represent the instantaneous differences in voltage between each phase and a reference phase. The calibration signals are derived from a single sine wave by providing a plurality of phase shift and voltage difference networks. Means are provided for amplitude control and elimination of harmonic distortion of the single sine wave, and therefore the output calibration signals share these characteristics.
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