A mathematical model of the admittance between tapped windings and their shield for ratio instruments

Author

Skubis, Tadeusz ; Met, Andrzej

Author_Institution

Inst. of Electr. & Electron. Meas., Silesian Tech. Univ., Gliwice, Poland

Volume

38

Issue

3

fYear

1989

fDate

6/1/1989 12:00:00 AM

Firstpage

764

Lastpage

768

Abstract

A mathematical model is developed for the equivalent admittance dependent on the measurable admittance distributed between the shield and individual sections of a tapped winding. The model makes possible the calculation of ratio instrument errors, correcting admittances, and the input admittance caused by the admittance to the shield. These parameters strongly depend on both the type of supply and the location of the shield with respect to the winding connection. Experimental results are presented that demonstrate the usefulness of the model for an enhancement of ratio instrument accuracy

Keywords

electric admittance; equivalent circuits; windings; correcting admittances; equivalent admittance; errors; input admittance; mathematical model; measurable admittance; ratio instruments; shield; tapped windings; Admittance measurement; Circuits; Electric variables measurement; Error analysis; Error correction; Grounding; Instruments; Mathematical model; Transformer cores; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.32189

Filename

32189