Using a Current Loop and Homogeneous Primary Winding for Calibrating a Current Transformer

Autor:	Martin Odehnal, Karel Draxler, Vlastimil Rada, Jan Kucera, Renata Styblikova
Rok vydání:	2013
Předmět:	Physics Spectrum analyzer Toroid business.industry Electrical engineering Current transformer Conductor Optics Electromagnetic coil Electromagnetic shielding Electrical and Electronic Engineering Current (fluid) business Instrumentation Current loop
Zdroj:	IEEE Transactions on Instrumentation and Measurement. 62:1658-1663
ISSN:	1557-9662 0018-9456
Popis:	This paper presents two methods for determining the ratio error and the phase displacement of a protective current transformer (PCT) with a transformation ratio of 10 kA/1 A and a measuring current transformer (MCT) with a transformation ratio of 20 kA/5 A. The primary conductor passed by a current (10 or 20 kA) placed in the center of the toroid is replaced by a current loop with ten turns placed in the center of the toroid. In the second case, the conductor is replaced by ten turns uniformly distributed along the circumference of the toroid. The primary current (2 or 1 kA) is measured in both cases using a toroidal current comparator, and the secondary current difference is evaluated by means of a current transformer (CT) error measurement system. The errors were also measured using a CT analyzer.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2c2fee243255296e02acb0f37c28930e https://doi.org/10.1109/tim.2012.2228073 Zobrazit plný text záznamu