Table of Contents

FOREWORD<br>INTRODUCTION<br>1 Scope<br>2 Normative references<br>3 Terms and definitions and abbreviations<br>4 Responsibilities in the current transformer design<br>&nbsp;&nbsp;&nbsp;process<br>5 Basic theoretical equations for transient designing<br>6 Duty cycles<br>7 Determination of the transient dimensioning factor<br>&nbsp;&nbsp;&nbsp;K[td] by numerical calculation<br>8 Core saturation and remanence<br>9 Practical recommendations<br>10 Relations between the various types of classes<br>11 Protection functions and correct CT specification<br>Annex A (informative) - Duty cycle C - O software code<br>Annex B (informative) - Software code for numerical<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;calculation of K[td]<br>Bibliography

Abstract

Pertains to inductive protective current transformers meeting the requirements of the IEC 61869-2 standard.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	PEL/38