IEEE C37.110-2007
$56.33
IEEE Guide for the Application of Current Transformers Used for Protective Relaying Purposes
| Published By | Publication Date | Number of Pages |
| IEEE | 2007 | 79 |
Revision Standard – Active. Revision of IEEE Std C37.110-1996. The characteristics and classification of current transformers (CTs) used for protective relaying are described. This guide also describes the conditions that cause the CT output to be distorted and the effects on relaying systems of this distortion. The selection and application of CTs for the more common protection schemes are also addressed.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C37.110ā¢-2007 Front cover |
| 3 | Title page |
| 6 | Introduction Notice to users Laws and regulations Copyrights Updating of IEEE documents Errata |
| 7 | Interpretations Patents Participants |
| 10 | Contents |
| 13 | Important notice 1. Overview 1.1 Scope 1.2 Purpose 2. Normative references |
| 14 | 3. Definitions |
| 16 | 4. Current transformer characteristics and classification 4.1 Current transformer equivalent circuit and phasor diagrams |
| 18 | 4.2 Current transformer secondary excitation characteristics |
| 19 | 4.3 Knee-point voltage |
| 20 | 4.4 Current transformer accuracy |
| 23 | 4.5 Dynamic characteristics |
| 31 | 4.6 The effects of remanence |
| 34 | 4.7 Fundamental transformer equation |
| 35 | 5. General application of current transformers 5.1 Current transformer burdens |
| 37 | 5.2 Ratio selection 5.3 Long-term and short-term thermal ratings |
| 38 | 5.4 Current transformer secondary output accuracy class voltage |
| 39 | 5.5 Connecting current transformers in series 5.6 Three-phase connections |
| 40 | 5.7 Auxiliary current transformers 5.8 Bus configuration |
| 41 | 5.9 Current transformer location |
| 42 | 5.10 Minimizing the effects of current transformer saturation 5.11 Determining current transformer steady-state performance using secondary excitation curves |
| 43 | 6. Effects of current transformer saturation on relays 6.1 Saturation effects on electromechanical relays 6.2 Saturation effects on static relays |
| 44 | 6.3 Saturation effects on differential relays 6.4 Unbalanced current measurement |
| 45 | 6.5 Current transformer performance under geomagnetic-induced current conditions 7. Specific applications of current transformers 7.1 Overcurrent relays |
| 49 | 7.2 Differential protection |
| 66 | 7.3 Distance protection |
| 68 | 7.4 Other types of high-speed protection |
| 69 | Annex A (informative) IEC standards on current transformers |
| 72 | Annex B (informative) List of ANSI C accuracy class values and burdens |
| 73 | Annex C (informative) Remanent flux in current transformers |
| 74 | Annex D (informative) Optical current sensor systems |
| 77 | Annex E (informative) Bibliography |
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