IEE Proceedings B Electric Power Applications · 1983 · 29 citations · 0 references
EngineeringElectrical EngineeringCircuit TheoryElectromagnetismInstrumentationCurrent DistributionCurrent Measurement InstrumentsCurrent-voltage CharacteristicsElectrical CharacterizationElectrical MeasurementElectrical MetrologyCurrent MeasurementCurrent Measurement AccuracyCurrent Meter DesignCurrent SensingCurrent Sensing CircuitsElectrical Measurement SystemsElectromagnetic Current MetersShunt Measurement
A polyphase current measuring system is described. The design parameters are given, followed by theoretical consideration of how they can be met. The practical realisation, as well as some actual results, are given. It is shown that 450 kA peak AC currents with DC components, having time constants up to 250 ms, can be measured within 2% accuracy. The main advantages of this system are the potential-free measurements and the low cost compared to shunt or CT measuring systems.