IEEE C57.148-2020

$43.33

IEEE Standard for Control Cabinets for Power Transformers

Published By	Publication Date	Number of Pages
IEEE	2020	53

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Description

Revision Standard – Active. Requirements for the design and construction of control cabinets on power transformers are covered by this standard.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C57.148™-2020 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
11	Contents
13	1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage 2. Normative references
14	3. Definitions, acronyms, and abbreviations 3.1 Definitions
16	3.2 Acronyms and abbreviations
17	4. Cabinet-ordering specifications 5. Standard cabinet construction 5.1 General 5.2 Cabinet-housing criteria 5.3 Cabinet dimensions
18	5.4 Cabinet construction materials 5.5 Compartment styles and welding 5.6 General cabinet layout
19	5.7 Rain sheds 5.8 Fixed back and side panels 5.9 Swing panels 5.10 Doors, hardware, and gaskets
20	5.11 Ventilation and drains 5.12 Location of conduit entry points 5.13 Bottom plate for cable entrance
21	5.14 Finish coatings 5.15 External cabinet grounding and grounding terminals 5.16 Internal ground connections and ground bus
22	5.17 Lights, door switches, and AC power outlet 5.18 Wiring
23	5.19 Circuit protection 5.20 Contactors
24	5.21 Heaters 5.22 AC power and cooling control circuits 6. Numbering and labeling system 6.1 Device numbers 6.2 Current transformer numbering
25	6.3 Terminal block, device, and terminal labels
26	6.4 Current transformer circuit terminal block, terminal, test switch, and secondary wiring numbers
27	6.5 Control, alarm, and trip-circuit terminal blocks and terminal numbers 6.6 Wire markers
28	7. Drawing requirements 7.1 General
29	7.2 Cabinet layout 7.3 Electrical drawings
31	8. Cabinet construction options 8.1 General
34	8.5 Option E: Cooling control switches 8.6 Option F: Annunciator
35	8.7 Option G: Automatic transfer switch
36	8.8 Option H: Dead-front cabinet design 8.9 Option I: Visible air gap
37	8.10 Option J: Digital communications and telemetry
38	Annex A (normative) Figures
49	Annex B (informative) Sample checklist B.1 General user specified options
51	B.2 Annunciator table and checklist
53	Back cover