This part of GB 1094 applies to liquid-immersed transformers, identifies power transformers according to their cooling methods, defines temperature rise limits and gives the methods for temperature rise tests.
Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Cooling Methods 5 Normal Cooling Conditions 6 Temperature Rise Limits 7 Temperature Rise Tests Annex A (Informative) Dissolved Gases Analysis for the Detection of Local Overheating Annex B (Informative) Techniques Used in Temperature Rise Testing of Liquid-Immersed Transformers Annex C (Informative) Hot-spot Winding Temperature Rise Determination for OFAF and OFWF Cooled Transformers Based on the Top-liquid Temperature in Tank Annex D (Informative) Methods to Estimate the Hot-spot Winding Temperature Rises Annex E (Informative) Application of Optical Fibre Sensors for Winding Hot-spot Measurements Bibliography