IEEE C57.119 2002
$42.25
IEEE Recommended Practice for Performing Temperature Rise Tests on Oil-Immersed Power Transformers at Loads Beyond Nameplate Ratings
| Published By | Publication Date | Number of Pages |
| IEEE | 2002 | 47 |
New IEEE Standard – Active. Reaffirmed 2008. Recommendations are made, where possible, regarding the performance and evaluation of temperature rise tests on oil-immersed power transformers beyond nameplate ratings. The intent is to assist power transformer manufacturers, and the ultimate users, in evaluating thermal performance of the transformers under varying loads.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | Title Page |
| 4 | Introduction |
| 5 | Participants |
| 7 | CONTENTS |
| 10 | 1. Overview 1.1 Scope 1.2 Purpose |
| 11 | 2. References |
| 12 | 3. Definitions and symbols 3.1 Definitions |
| 13 | 3.2 Symbols |
| 16 | 4. General 4.1 Preliminary evaluation 4.2 Cooling equipment operation 5. Precautions |
| 17 | 5.1 Thermal degradation 5.2 Other factors limiting loading 5.3 Monitoring of test results |
| 18 | 5.4 Maximum temperatures 6. Monitored data 6.1 Ambient air temperature 6.2 Oil temperatures 6.3 Other temperatures 6.4 Currents 7. Recorded data 7.1 Losses |
| 19 | 7.2 Temperature indicator readings 7.3 Tank surface and other temperatures 7.4 Oil levels 8. Oil samples 9. Test procedure for determining the thermal characteristics of oil-immersed power transformers |
| 20 | 9.1 Tap position and connection 9.2 Number of tests 9.3 Applied test currents 9.4 Discontinued tests |
| 21 | 9.5 Temperature rise test at rated load 9.6 Temperature rise test at reduced load |
| 22 | 9.7 Temperature rise test at load beyond nameplate rating 9.8 Evaluation of thermal data |
| 25 | 9.9 Evaluation of other data 10. Test procedure for performing load cycle temperature rise tests 10.1 Recommended prior tests 10.2 Information specified by user |
| 26 | 10.3 Determination of load cycle |
| 27 | 10.4 Preparatory calculations 10.5 Data recorded 10.6 Test procedure |
| 28 | 10.7 Interrupted test |
| 29 | 10.8 Assessment of transformer performance 11. Integrated test procedure for determining thermal characteristics and for performing load cyc… 11.1 Load cycle simulation 11.2 Preliminary evaluation |
| 30 | 11.3 Test procedure 11.4 Initial test 11.5 Conditioning load 11.6 Beyond maximum nameplate test 11.7 Final test |
| 31 | Annex A (normative) Loading guide equations |
| 33 | Annex B (informative) Tutorial |
| 44 | Annex C (informative) Hottest spot measurements using direct reading •ber optics temperature measurements |
| 46 | Annex D (informative) Bibliography |
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