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IEEE 142-2007

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IEEE Grounding of Industrial Power Systems

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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.
The scope of this document is to provide concensus of the expertize on the subject of grounding of industrial and commercial power systems, equipemnt, lightning protection, connection to earth and computer system grounding.
As grounding systems technology advances, this recommended practice must be revised and updated to reflect these changes.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number 142
Publication Date Nov. 30, 2007
Language en - English
Page Count 250
Revision Level
Supercedes
Committee Industrial & Commercial Power Systems Standards Development Committee
Publish Date Document Id Type View
Nov. 30, 2007 142-2007 Revision
June 22, 1992 142-1991 Revision
Sept. 17, 1982 142-1982 Revision
Sept. 1, 1960 142-1956 Revision