Wideband Current Transducer Traceable Calibration up to 10 A and 1 MHz

Area of Science:

• Electrical Engineering
• Metrology

Background:

• Energy efficiency is critical in industry due to rising electrical energy consumption.
• Accurate power quality and traceable metering are essential for energy efficiency management.
• Current transducers measure electrical events up to megahertz frequencies, including pulse and transient currents.

Purpose of the Study:

• To present an enhanced traceable calibration methodology for current transducers.
• To extend calibration capabilities to 10 A and 1 MHz, a tenfold increase in current level at high frequencies.
• To improve the accuracy and traceability of current transducer measurements.

Main Methods:

• Development of a traceable calibration methodology based on a metrological traceability chain.
• Utilizing a calculable current shunt for calibration.
• Extending calibration capabilities to 10 A and 1 MHz.

Main Results:

• Achieved traceable calibration of current transducers up to 10 A and 1 MHz.
• Established a calibration method that is unique for these parameters.
• Obtained an uncertainty of less than 0.2% for the transimpedance ratio.

Conclusions:

• The enhanced methodology significantly advances the calibration of current transducers at high frequencies and current levels.
• This improved calibration supports more effective energy efficiency management and power quality monitoring.
• The method provides a traceable and highly accurate solution for current transducer characterization.