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Description / Abstract:
This publication provides a recommended practice for the
electrical design of industrial facilities. It is likely to be of
greatest value to the power-oriented engineer with limited
industrial plant experience. It can also be an aid to all engineers
responsible for the electrical design of industrial facilities.
However, it is not intended as a replacement for the many excellent
engineering texts and handbooks commonly in use, nor is it detailed
enough to be a design manual. It should be considered a guide and
general reference on electrical design for industrial plants and
buildings.
Tables, charts, and other information that have been extracted
from codes, standards, and other technical literature are included
in this publication. Their inclusion is for illustrative purposes;
where technical accuracy is important, the latest version of the
referenced document should be consulted to assure use of complete,
up-to-date, and accurate information.
It is important to establish, at the outset, the terms
describing voltage classi?cations. Table 1-1, adapted from IEEE Std
100-1992 [B5], indicates these voltage levels. The National
Electrical Code, described in 1.5.1, uses the term over 600
volts generally to refer to what is known as high
voltage. Many IEEE Power Engineering Society (PES) standards
use the term high voltage to refer to any voltage higher
than 1000. All nominal voltages are expressed in terms of
root-mean-square (rms). For a detailed explanation of voltage
terms, see Chapter 3. ANSI C84.1-1977 [B1] lists voltage class
designations applicable to industrial and commercial buildings
where medium voltage extends from 1000 V to 69 kV nominal.