IEEE STD C57.110 2008
$39.00
IEEE Recommended Practice for Establishing Liquid-Filled and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents
| Published By | Publication Date | Number of Pages |
| IEEE | 2008 | 54 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C57.110-2008 Front Cover IEEE Std C57.110-2008 Front Cover |
| 3 | Title Page Title Page |
| 6 | Introduction Introduction |
| 7 | Notice to users Notice to users Laws and regulations Laws and regulations Copyrights Copyrights Updating of IEEE documents Updating of IEEE documents Errata Errata Interpretations Interpretations |
| 8 | Patents Patents Participants Participants |
| 10 | Contents Contents |
| 11 | Important Notice Important Notice 1. Overview 1. Overview 1.1 Scope 1.1 Scope 1.2 Purpose 1.2 Purpose |
| 12 | 2. Normative references 2. Normative references 3. General considerations 3. General considerations 3.1 Transformer losses 3.1 Transformer losses |
| 13 | 3.2 Transformer capability equivalent 3.2 Transformer capability equivalent |
| 14 | 3.3 Basic data 3.3 Basic data 3.4 Transformer per-unit losses 3.4 Transformer per-unit losses |
| 15 | 3.5 Transformer losses at measured currents 3.5 Transformer losses at measured currents |
| 17 | 3.6 Harmonic loss factorTPPT for winding eddy currents 3.6 Harmonic loss factorTPPT for winding eddy currents |
| 20 | 3.7 Harmonic loss factor for other stray losses 3.7 Harmonic loss factor for other stray losses |
| 22 | 4. Design considerations for new transformer specification 4. Design considerations for new transformer specification 4.1 Harmonic current filtering 4.1 Harmonic current filtering 4.2 Impact on the neutral 4.2 Impact on the neutral 4.3 Power factor correction equipment 4.3 Power factor correction equipment |
| 23 | 4.4 Electrostatic ground shields 4.4 Electrostatic ground shields 4.5 Design consideration outside the windings 4.5 Design consideration outside the windings 4.6 Harmonic spectrum analysis 4.6 Harmonic spectrum analysis 4.7 Design consideration in the windings 4.7 Design consideration in the windings |
| 24 | 5. Recommended procedures for evaluating the load capability of existing transformersTPPT 5. Recommended procedures for evaluating the load capability of existing transformersTPPT 5.1 Transformer capability equivalent calculation using design eddy-current loss data 5.1 Transformer capability equivalent calculation using design eddy-current loss data |
| 32 | 5.2 Transformer capability equivalent calculation using data available from certified test report 5.2 Transformer capability equivalent calculation using data available from certified test report |
| 34 | 5.3 Typical calculations for dry-type transformers 5.3 Typical calculations for dry-type transformers |
| 37 | 5.4 Typical calculations for liquid-filled transformers 5.4 Typical calculations for liquid-filled transformers |
| 40 | 5.5 Neutral bus capability for nonsinusoidal load currents that include third harmonic components 5.5 Neutral bus capability for nonsinusoidal load currents that include third harmonic components |
| 41 | Annex A (informative)Bibliography Annex A (informative)Bibliography |
| 43 | Annex B (informative)Comparison of UL K-factor definition and IEEE C57.110 harmonic loss factor definition Annex B (informative)Comparison of UL K-factor definition and IEEE C57.110 harmonic loss factor definition |
| 46 | Annex C (informative)Temperature rise testing procedures Annex C (informative)Temperature rise testing procedures |
| 52 | Annex D (informative)Tutorial discussion of transformer losses and the effect of harmonic currents on these losses Annex D (informative)Tutorial discussion of transformer losses and the effect of harmonic currents on these losses |
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