December 2012
Beginner
528 pages
17h 31m
English
Content preview from Introduction to Electrical Power and Power Electronics
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System Protection
The power system design includes protection from all credible fault currents and
overvoltages that may occur in normal and abnormal operations. The fault (short cir-
cuit) occurs by accident or when the insulation breaks down due to aging and vibra-
tions or due to overvoltages exceeding the strength of the insulation. Considering the
working environment around electrical equipment (e.g., humidity, high temperature,
and vibrations) it is important in selecting the right insulation type.
The heat generation rate and the mechanical force in conductors, both being
square functions of the current, are the highest at the rst subtra ...
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