Precision Characterisation of Current Transformers and Shunts in the Audio Frequency Range

This paper presents a technique to compare two current transformers, or a current transformer and ac current shunts, with an uncertainty better than 1 uA/A and 1 urad at audio frequencies. Examples of such a comparison at frequencies from 10Hz to 10kHz are given. Due to its low uncertainty, the desc...

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Main Authors: Budovsky, Ilya, Marais, Louis, van Beveren, Laurens Willems
Format: Conference Proceeding
Language:English
Subjects:
AC current
Amplifiers
Current measurement
current shunt
current transformer
Current transformers
Frequency measurement
measurement
Measurement uncertainty
Resistors
Voltage measurement
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Marais, Louis
van Beveren, Laurens Willems
description This paper presents a technique to compare two current transformers, or a current transformer and ac current shunts, with an uncertainty better than 1 uA/A and 1 urad at audio frequencies. Examples of such a comparison at frequencies from 10Hz to 10kHz are given. Due to its low uncertainty, the described technique made it possible to accurately measure critical parameters such as common-mode dependence of a current transformer and impedance variation of current shunts with ac current applied.
doi_str_mv 10.1109/CPEM.2018.8501022
format conference_proceeding
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source IEEE Xplore All Conference Series
subjects AC current
Amplifiers
Current measurement
current shunt
current transformer
Current transformers
Frequency measurement
measurement
Measurement uncertainty
Resistors
Voltage measurement
title Precision Characterisation of Current Transformers and Shunts in the Audio Frequency Range
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