The objective of this book is to present the fundamentals of reliability analysis applied to
the planning and design of industrial and commercial electric power distribution systems.
The intended audience for this material is primarily consulting engineers and plant
electrical engineers and technicians.
The design of reliable industrial and commercial power distribution systems is important
because of the high cost associated with power outages. It is necessary to consider the cost
of power outages when making design decisions for new power distribution systems as
well as to have the ability to make quantitative “cost-versus-reliability” trade-off studies.
The lack of credible data concerning equipment reliability and the cost of power outages
has hindered engineers in making such studies. This revision of IEEE Std 493
™
overcomes these obstacles.