Ratio Transformer (Inductive Voltage Divider) Calibration

About this Article
This article by Toshiaki Aoki and Katsumi Yoko was presented at the 1995 NCSL Symposium was published in the Proceedings.

Abstract

This paper describes a technique for calibration of a decade ratio transformer, or inductive voltage divider (IVD), which is performed by comparison measurement at 1kHz. Comparison measurement is made between a device under test and a standard ratio transformer which is calibrated for the first decade by Japan Electric Meters Inspection Corporation. A method using this approach is outlined that uses a commercially available precision capacitance bridge, a four-terminal-pair LCR meter, and three-terminal capacitors. Experimental results are given to demonstrate the validity of the calibration technique.

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IVD Calibration