The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON SYSTEMS AND CONTROL
Transactions ID Number: 89-135
Full Name: Augusto Ferreira Bradao Jr
Position: Professor
Age: ON
Sex: Male
Address: Av Prof Luciano Gualberto Trav 3, 158
Country: BRAZIL
Tel: 1130915113
Tel prefix: 55
Fax: 1130915313
E-mail address: brandao@pea.usp.br
Other E-mails: idasilva@tech.mak.ac.ug, acsilos@iee.usp.br,dimetri@uol.com.br,emdias@pea.usp.br
Title of the Paper: Inductive Voltage Transformers Calibration by the Parameters
Authors as they appear in the Paper: Augusto Ferreira Brandao Jr, Izaek P da Silva, antonio C de Silo, Dimitri Ivanov, Eduardo M Dias
Email addresses of all the authors: brandao@pea.usp.br,idasilva@tech.mak.ac.ug, acsilos@iee.usp.br,dimetri@uol.com.br,emdias@pea.usp.br
Number of paper pages: 10
Abstract: The accuracy class of an IVT – Inductive Voltage Transformer – is typically assessed in laboratory installations either by comparing with another IVT presenting greater accuracy and traceable to a national laboratory or by using a capacitive divider. Calibration in the field using internal parameters is considered herein, using results obtained from typical open and short circuit tests and winding resistances, performed with common meters. A Möllinger & Gewecke graphic diagram is employed together with the results of an accuracy test previously carried out to determine the exact value of the winding turn relation and of the primary winding dispersion reactance. These values are used to calculate the phase and ratio errors, which must lie between definite limits, defined by the accuracy class of the instrument. Four commercial IVTs were tested to determine the validity of the procedure. The errors are compared with those obtained with the Schering-Alberti method (AC!
Bridge and comparison with standard IVT).
Keywords: - Instrument Transformers, Inductive Voltage Transformer, Voltage Transducers, Measurement Errors, Error Estimation, Certification, Calibration
EXTENSION of the file: .pdf
Special (Invited) Session: ON SITE CALIBRATION OF INDUCTIVE VOLTAGE TRANSFORMERS
Organizer of the Session: 626-346
How Did you learn about congress:
IP ADDRESS: 143.107.163.27
