Title :
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
fDate :
6/1/1989 12:00:00 AM
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;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
