IEEE C37.23-2015

$45.83

IEEE Standard for Metal-Enclosed Bus

Published By	Publication Date	Number of Pages
IEEE	2015

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Description

Revision Standard – Active. Metal-enclosed (ME) bus assemblies for indoor and outdoor use are discussed in this standard. The types of assemblies covered are nonsegregated-phase bus, cable bus, segregated-phase bus, and isolated-phase bus. Rated maximum voltages of ac ME bus assemblies range from 1058 V through 38 kV with continuous-current ratings of 600 A through 26 000 A for self-cooled ratings and up to 50 000 A for forced-cooled ratings. Rated maximum voltage levels of dc ME bus assemblies range from 300 V through 3200 V with continuous-current ratings of 600 A through 15 000 A. Service conditions, ratings, temperature limitations and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and application are discussed. A guide for calculating losses in isolated-phase bus is included.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C37.23-2015 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
7	Participants
9	Introduction
11	Contents
12	IMPORTANT NOTICE 1. Overview 1.1 Scope 1.2 Purpose
13	2. Normative references
14	3. Definitions
17	4. Normal (usual) service conditions
18	5. Ratings 5.1 General 5.2 Voltage and insulation levels
20	5.3 Rated power frequency 5.4 Rated current
25	6. Tests 6.1 General
26	6.2 Design tests
35	6.3 Production tests
36	6.4 Field tests
37	7. Construction 7.1 Materials and finish
38	7.2 Grounding 7.3 Adjacent and supporting structure 7.4 Ventilation
39	7.5 Forced cooled
40	7.6 Vapor barriers 7.7 Fire barriers
41	7.8 Insulating materials for covering buses and connections 7.9 Terminations and flexible connections 7.10 Switches or links for station-service transformers 7.11 Secondary wiring
42	8. Miscellaneous accessories
44	Annex A (normative) Cable bus A.1 General A.2 References A.3 Definitions A.4 Service conditions A.5 Ratings A.6 Tests
46	A.7 Construction
49	Annex B (informative) Guide for calculating losses in isolated-phase bus B.1 General B.2 Conductor losses
51	B.3 Skin effects
55	B.4 Enclosure losses
62	B.5 Power consumption of cooling equipment B.6 Sample solutions
70	B.7 Structural steel losses
71	Annex C (informative) Application guide for ME bus in unusual service conditions C.1 General C.2 Ambient air temperature above 40 °C C.3 Ambient air temperature below –30 °C C.4 Application at unusual altitudes
72	C.5 Other conditions that may affect design and application
73	C.6 Modification of equipment for unusual environment
75	Annex D (informative) Guide for handling, storage, and installation D.1 General D.2 Handling
77	D.3 Pre-operation check
78	Annex E (informative) Bibliography