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Electric Power Distribution Engineering, 3rd Edition by Turan Gonen

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11.7 Series and Parallel Combinations

Simple combinations of series and parallel subsystems (or components) can be analyzed by successively reducing subsystems into equivalent parallel or series components.

Figure 11.17 shows a parallel–series system that has a high-level redundancy. The equivalent reliability of the system with m parallel paths of n components each can be expressed as

R sys = 1 ( 1 R n ) m ( 11.113 )

Figure 11.17

Figure showing a parallel–series system.

A parallel–series system.

where

Rsys is the equivalent reliability of system

Rn is the equivalent reliability of a path

R is the reliability of a component

n is the total number of ...

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