Turn-tester for windings with a magnetic core

Author

Zhao, Xiu-Min ; Zhao, Yi-Tao

Author_Institution

Inst. of Machinery & Factory Design, Taiyuan, China

Volume

39

Issue

5

fYear

1990

fDate

10/1/1990 12:00:00 AM

Firstpage

799

Lastpage

801

Abstract

A turn-tester for windings on a magnetic core is described. A temporary winding is wound on the core to form a current transformer. Based on the principle of current comparators for calibrating current transformers, the error of the current transformer thus formed is measured. The number of turns can be correctly determined from the characteristics of this current transformer. With an error of 2×10 ^-5 , the accuracy of this type of turn testing is very high, especially for cores made of iron-nickel alloy. An error on the order of 0.1% to 0.01% is attainable, which means that an error of less than 1 turn is possible when the number of turns is less than 1000 to 10000

Keywords

calibration; comparators (circuits); current transformers; electric current measurement; test equipment; transformer testing; transformer windings; calibration; current comparators; current transformer; instrument transformer; magnetic core; tester; transformer windings; turn testing; Capacitance; Clocks; Current measurement; Current transformers; Magnetic cores; Microprocessors; Pulse measurements; Registers; Switching circuits; Transducers;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.58631

Filename

58631