Table of Contents

FOREWORD<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Cooling methods <br>5 Normal cooling conditions<br>6 Temperature rise limits<br>7 Temperature rise tests <br>Annex A (informative) - Hot-spot winding temperature <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rise determination for OFAF and OFWF cooled <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;transformers based on the top-liquid temperature <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;in tank <br>Annex B (informative) - Methods to estimate the hot-spot <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;winding temperature rises <br>Annex C (informative) - Techniques used in temperature rise <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;testing of liquid-immersed transformers<br>Annex D (informative) - Dissolved gases analysis for the <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;detection of local overheating<br>Annex E (informative) - Application of optical fibre sensors for <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;winding hot-spot measurements <br>Bibliography

Abstract

Pertains to liquid-immersed transformers, identifies power transformers according to their cooling methods, defines temperature rise limits and gives the methods for temperature rise tests.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 14