IEEE C57.12.24-2016(Redline)
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IEEE Standard for Submersible, Three-Phase Transformers, 3750 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 Volts and Below; Low Voltage, 600 Volts and Below (Redline)
| Published By | Publication Date | Number of Pages |
| IEEE | 2016 |
Revision Standard – Active. Certain electrical, dimensional, and mechanical characteristics are covered in this standard. It also takes into consideration certain safety features of three-phase, 60 Hz, liquid-immersed, self-cooled, submersible transformers with separable insulated high-voltage connectors. These transformers are rated 3750 kVA and smaller with high voltages of 34 500 GrdY/19 920 V and below and with low voltages of 600 V and below.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C57.12.24-2016 Front Cover |
| 2 | Title page |
| 4 | Important Notices and Disclaimers Concerning IEEE Standards Documents |
| 7 | Participants |
| 9 | Introduction |
| 10 | Contents |
| 11 | 1. Overview 1.1 Scope 1.2 Purpose 2. Normative references |
| 12 | 3. Definitions 4. Service conditions 4.1 Cooling air temperature limit 4.2 Submerged operation |
| 13 | 5. Rating data 5.1 Cooling class 5.2 Kilovolt-ampere ratings 5.3 Voltage ratings 5.4 Insulation levels |
| 14 | 5.5 Impedance voltage 5.5.1 General 5.5.2 Tolerance on impedance voltage 6. Tests 6.1 General |
| 15 | 6.2 Reference temperature 7. Construction 7.1 General |
| 18 | 7.2 Connectors and terminals 7.2.1 High-voltage connectors |
| 19 | 7.2.2 Low-voltage terminals |
| 21 | 7.2.3 Neutral terminal connections 7.3 Accessories 7.3.1 Tap changer |
| 22 | 7.3.2 Pressure relief 7.3.2.1 Manual pressure relief 7.3.2.2 Automatic pressure relief 7.3.3 Loadbreak switch 7.3.3.1 Loadbreak switch labeling |
| 23 | 7.3.3.2 Loadbreak switch location 7.3.3.3 Loadbreak switch rotation 7.3.3.4 Loadbreak switch current-carrying capabilities 7.3.3.5 Loadbreak switch material 7.3.4 Overcurrent protection 7.3.4.1 Full range, current-limiting fuses 7.3.4.2 Bayonet fuses |
| 24 | 7.3.5 Protective covers 7.4 Nameplate 7.5 Tank 7.5.1 Material requirements 7.5.1.1 Transformers located in a wet vault or manhole |
| 25 | 7.5.1.2 Transformers located in a vault or manhole with cycling conditions 7.5.1.3 Material thickness 7.5.2 Tank integrity 7.5.3 Hardware 7.5.4 Other materials 7.5.5 Cover |
| 26 | 7.5.6 Hand holes 7.5.7 Base 7.5.8 Lifting provisions 7.5.9 Grounding provisions 7.5.10 Finish |
| 27 | 7.5.11 Insulating liquid level marking 7.5.12 Connector and terminal markings 7.6 Components for primary cable system 7.7 Angular displacement 7.8 Audible sound levels |
| 28 | 8. Storage and installation 8.1 Storage 8.2 Installation |
| 29 | Annex A (informative) Use of pressure relief means |
| 30 | Annex B (informative) Bibliography |
| 31 | Back cover |
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