IEEE C57.12.90-2006
$80.71
IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
| Published By | Publication Date | Number of Pages |
| IEEE | 2006 | 94 |
Revision Standard – Superseded. Methods for performing tests specified in IEEE Std C57.12.00TM-2006 and other standards applicable to liquid-immersed distribution, power, and regulating transformers are described. Instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty transformers, grounding transformers, and mine transformers are excluded. This standard covers resistance measurements, polarity and phaserelation tests, ratio tests, no-load-loss and excitation current measurements, impedance and load loss measurements, dielectric tests, temperature tests, short-circuit tests, audible sound level measurements, calculated data, and certified test data.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C57.12.90-2006, IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers |
| 3 | Title page |
| 6 | Introduction Notice to users Errata |
| 7 | Interpretations Patents Participants |
| 11 | CONTENTS |
| 13 | 1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage |
| 14 | 2. Normative references |
| 15 | 3. Definitions |
| 16 | 4. General 4.1 Types of tests 4.2 Test requirements 4.3 Test sequence 4.4 Instrumentation |
| 17 | 5. Resistance measurements 5.1 Determination of cold temperature 5.2 Conversion of resistance measurements |
| 18 | 5.3 Resistance measurement methods |
| 19 | 6. Polarity and phase-relation tests 6.1 Subtractive and additive polarity |
| 21 | 6.2 Polarity tests: single-phase transformers |
| 22 | 6.3 Polarity and phase-relation tests: polyphase transformers |
| 25 | 7. Ratio tests 7.1 General |
| 26 | 7.2 Tolerances for ratio 7.3 Ratio test methods |
| 28 | 8. No-load losses and excitation current 8.1 General 8.2 No-load loss test |
| 31 | 8.3 Waveform correction of no-load losses 8.4 Temperature correction of no-load losses |
| 32 | 8.5 Determination of excitation (no-load) current 9. Load losses and impedance voltage 9.1 General |
| 33 | 9.2 Factors affecting the values of load losses and impedance voltage 9.3 Tests for measuring load losses and impedance voltage |
| 40 | 9.4 Calculation of load losses and impedance voltage from test data |
| 42 | 9.5 Zero-phase-sequence impedance |
| 45 | 10. Dielectric tests 10.1 General |
| 47 | 10.2 Switching impulse test procedures |
| 48 | 10.3 Lightning impulse test procedures |
| 52 | 10.4 Routine impulse test for distribution transformers |
| 55 | 10.5 Low-frequency tests 10.6 Applied voltage tests 10.7 Induced voltage tests for distribution and Class I power transformers |
| 56 | 10.8 Induced voltage test for Class II power transformers |
| 58 | 10.9 Partial discharge measurement 10.10 Insulation power-factor tests |
| 61 | 10.11 Insulation resistance tests |
| 62 | 11. Temperature-rise tests |
| 63 | 11.1 Test methods |
| 65 | 11.2 Resistance measurements |
| 66 | 11.3 Temperature measurements |
| 69 | 11.4 Correction of temperature rise test results |
| 70 | 12. Short-circuit tests 12.1 General |
| 71 | 12.2 Test connections |
| 72 | 12.3 Test requirements |
| 73 | 12.4 Test procedure |
| 74 | 12.5 Proof of satisfactory performance |
| 76 | 13. Audible sound emissions 13.1 General 13.2 Instrumentation |
| 77 | 13.3 Test conditions |
| 78 | 13.4 Microphone positions |
| 80 | 13.5 Sound power rating |
| 83 | 13.6 Presentation of results |
| 89 | 14. Calculated data 14.1 Reference temperature 14.2 Losses and excitation current 14.3 Efficiency 14.4 Voltage regulation of a constant-voltage transformer |
| 92 | Annex A (informative) Partial discharge measurement using radio-influence voltage instrumentation and its failure detection |
| 94 | Annex B (informative) Bibliography |
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