IEEE 142-2007

$145.71

IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems

Published By	Publication Date	Number of Pages
IEEE	2007	225

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Description

Revision Standard – Inactive-Reserved. The problems of system grounding, that is, connection to ground of neutral, of the corner of the delta, or of the midtap of one phase, are covered. The advantages and disadvantages of grounded vs. ungrounded systems are discussed. Information is given on how to ground the system, where the system should be grounded, and how to select equipment for the ground of the neutral circuits. Connecting the frames and enclosures of electric apparatus, such as motors, switchgear, transformers, buses, cables, conduits, building frames, and portable equipment, to a ground system is addressed. The fundamentals of making the interconnection of a ground conductor system between electric equipment and the ground rods, water pipes, etc., are outlined. The problems of static electricity— how it is generated, what processes may produce it, how it is measured, and what should be done to prevent its generation or to drain the static charges to earth to prevent sparking—are treated. Methods of protecting structures against the effects of lightning are also covered. Obtaining a low-resistance connection to earth, use of ground rods, connections to water pipes, etc., are discussed. A separate chapter on electronic equipment is included.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std 142-2007 Front Cover
3	IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems
4	Abstract/Keywords
6	Introduction/Notice to users
7	Participants
9	Contents
11	Chapter 1 System grounding 1.1 Introduction
12	1.2 Definitions
14	1.3 Purposes of system grounding
15	1.4 Methods of system neutral grounding
32	1.5 Obtaining the system neutral
38	1.6 Location of system grounding points
48	1.7 Grounding of industrial and commercial generators
58	1.8 Autotransformers
63	1.9 System grounding for uninterruptible power systems
67	1.10 Portable mining equipment supply systems
70	1.11 Creation of stray currents and potentials
72	1.12 Avoiding common-mode noise
73	1.13 Limiting transferred earth potentials
74	1.14 “Resonantly” produced voltages
76	1.15 Grounding of dc power systems
80	1.16 Normative references
83	1.17 Bibliography
85	Chapter 2 Equipment grounding 2.1 Basic objectives
87	2.2 Fundamental concepts
105	2.3 Equipment grounding as influenced by type of use 2.4 Outdoor open-frame substations
109	2.5 Unit substations
110	2.6 Installations serving heavy portable electric machinery
114	2.7 Interior wiring systems
120	2.8 Interior unit substations and switching centers
121	2.9 Utilization equipment
124	2.10 Normative references
126	2.11 Bibliography
129	Chapter 3 Static and lightning protection grounding 3.1 Introduction 3.2 Static grounding
150	3.3 Lightning protection grounding
166	3.4 Normative references
169	3.5 Bibliography
171	Chapter 4 Connection to earth 4.1 Resistance to earth
179	4.2 Ground electrodes
184	4.3 Methods and techniques of construction
186	4.4 Measurement of resistance to earth
192	4.5 Normative references
197	Chapter 5 Electronic equipment grounding 5.1 Introduction 5.2 Definitions
198	5.3 History of computer grounding
200	5.4 System or equipment to be grounded
201	5.5 Grounding electronic equipment
210	5.6 Effects of internal rectifiers in computers
211	5.7 Grounding of shields
214	5.8 Interference from radio frequencies
215	5.9 Case histories
217	5.10 Normative references
218	5.11 Bibliography
221	Index A–E
222	F–G
223	H–R
224	S–T
225	U–Z