Calibration of Ratio Transformer

摘要

This paper describes a calibration technique for decade ratio transformers which is performed by comparison measurement at 1 kHz. 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.