High precision automated meas­uring system for AC-DC current transfer standards

• An automated measuring system for AC-DC current transfer standards has been developed at the Swedish National Testing and Research Institute (SP). The use of a guard makes intercomparisons with ppm precision possible at frequencies up to 100 kHz. Two multijunction thermal converters are used for evaluating the uncertainty of the system.

Nyckelord

AC current

AC-DC transfer difference

measurement standards

measurement techniques

thermal converter

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