电磁兼容资料大全.chm

Abstract: 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.
Keywords: connection to earth, electronic equipment grounding, equipment
grounding, lightning protection, static protection, system grounding

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