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IEEE C57.13.1-2006

Historical Revision

IEEE Guide for Field Testing of Relaying Current Transformers

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Revision Standard - Superseded. This guide describes field test methods that assure that current transformers are connected properly, are of marked ratio and polarity, and are in a condition to perform as designed both initially and after having been in service for a period of time.
The scope of this guide is to describe field test methods that assure current transformers (CTs) are connected properly, are of marked ratio and polarity, and are in a condition to perform as designed both initially and after being in service for a period of time. Annex A describes wiring integrity checks, uses of test jacks and current shorting switch, and relay test equipment. Annex B illustrates excitation voltage measurement differences between rms responding voltmeters, commonly used under field conditions, and average responding voltmeters commonly used in laboratory tests and also discusses the effect of the source impedance. Annex C describes the characteristics, and other pertinent information, for optical current sensor systems used with protective relaying. It provides an overview of the components used in an optical sensor system, discusses the differences from conventional CTs, and provides testing information. Annex D is the bibliography for this guide.
The purpose of the guide is to provide information on the current technology for field testing of instrument transformers and to more closely coordinate the information with the other industry standards, for example, National Electrical Safety Code(R) (NESC(R)).

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.13.1
Publication Date Feb. 28, 2007
Language en - English
Page Count 38
Revision Level
Supercedes
Committee Power System Relaying and Control
Publish Date Document Id Type View
Oct. 31, 2018 C57.13.1-2017 Revision
Feb. 28, 2007 C57.13.1-2006 Revision
Nov. 30, 1980 C57.13.1-1981 Revision