August 2015
Beginner to intermediate
1061 pages
31h 28m
English
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Chapter 5
Design Considerations of Primary Systems
Imagination is more important than knowledge.
Albert Einstein
The great end of learning is nothing else but to seek for the lost mind.
Mencius, Works, 299 BC
Earn your ignorance! Learn something about everything before you know nothing about anything.
Turan Gönen
5.1 Introduction
The part of the electric utility system that is between the distribution substation and the distribution transformers is called the primary system. It is made of circuits known as primary feeders or primary distribution feeders.
Figure 5.1 shows a one-line diagram of a typical primary distribution feeder. A feeder includes a “main” or main feeder, which usually is a three-phase four-wire circuit, and branches or laterals, ...
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