在等电位工作状态下校准多元感应分流器

doi:10.3969/j.issn.1000-1158.2024.07.02

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Abstract A method for calibration of multiple inductive current dividers (MICD) is proposed.The I/V converter consisting of a voltage follower and a resistor is introduced in the calibration circuit, resulting in the same status for the current ratio of the branches of the MICD both in the calibration and the actual working condition.The MICD with 11 branches has been calibrated compared with an independent reference current provided by a reference current transformer (CT) used to avoid the influence on the current ratio of the branches.The MICD were calibrated at 20、 55、 400Hz and 1kHz.The results showed that the measurement standard uncertainty of ratio errors were better than 0.2μA/A and phase errors were better than 1.5μrad at the ratio of 10:1.

Key words： electrical metrology multiple inductive current dividers equipotential current proportion ratio error phase error;calibration

Received: 14 September 2023 Published: 04 July 2024

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TB971

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	Articles by authors
	YANG Di
	LIN Jun
	ZHANG Jiangtao
	SHI Zhaomin
	PAN Xianlin

Cite this article:

YANG Di,LIN Jun,ZHANG Jiangtao, et al. Multiple Inductive Current Dividers Calibration on Equipotential Working Condition[J]. Acta Metrologica Sinica, 2024, 45(7): 935-940.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2024.07.02 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2024/V45/I7/935

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