IEEE C57.12.34-2022
$44.42
IEEE Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers, 10 MVA and Smaller; High-Voltage, 34.5 kV Nominal System Voltage and Below; Low-Voltage, 15 kV Nominal System Voltage and Below (Published)
Published By | Publication Date | Number of Pages |
IEEE | 2022 | 56 |
Revision Standard – Active. Certain electrical, dimensional, and mechanical characteristics are set forth, as well as certain safety features of three-phase, 60 Hz, liquid-immersed, self-cooled, pad-mounted, compartmental-type distribution transformers. These transformers are rated 10 MVA and smaller, with the high-voltage limit of 34.5 kV nominal system voltage and below, and with low-voltage limit of 15 kV nominal system voltage and below. This standard covers the connector, bushing, and terminal arrangements for radial or loop-feed systems. This standard does not cover the electrical and mechanical requirements of any accessory devices that may be supplied with the transformer.
PDF Catalog
PDF Pages | PDF Title |
---|---|
1 | IEEE Std C57.12.34™-2022 Front Cover |
2 | Title page |
4 | Important Notices and Disclaimers Concerning IEEE Standards Documents |
8 | Participants |
10 | Introduction |
11 | Contents |
12 | 1. Overview 1.1 Scope 1.2 Purpose |
13 | 1.3 Word usage 2. Normative references |
14 | 3. Definitions 4. Ratings 4.1 Kilovolt-ampere ratings 4.2 Voltage ratings 4.3 Tap ratings |
15 | 5. Impedance voltage 5.1 Nominal percent impedance voltage 5.2 Tolerance on impedance voltage 5.3 Tolerance on impedance voltage on a tap 6. Basic lightning impulse insulation levels |
17 | 7. Tests 7.1 General 7.2 Dielectric tests 7.3 Dielectric test levels 8. Construction 8.1 General 8.2 Compartment configuration 8.3 Access |
18 | 8.4 Enclosure security and coating system 8.5 Pad attachment 8.6 Lifting 8.7 Connectors, bushings, and terminals |
21 | 8.8 Instruction nameplate 8.9 Oil preservation 8.10 Tanks 8.11 Grounding provisions |
22 | 8.12 Components for loop primary cable systems 9. Storage 10. Installation 11. Other requirements that may be specified for some applications |
44 | Annex A (informative) Accessories for three-phase pad-mounted transformers A.1 General A.2 Bail A.3 Overcurrent protection |
46 | A.4 Underinsulating liquid loadbreak switches |
49 | A.5 Liquid-level indicating devices |
50 | A.6 Liquid temperature indicating devices |
51 | A.7 Accessory boxes A.8 Underinsulating liquid surge arrester |
52 | A.9 Internal current transformer |
53 | A.10 Winding hot-spot monitors |
54 | Annex B (informative) Clarification of the horizontal angle of loading B.1 General |
55 | Annex C (informative) Bibliography |
56 | Back cover |