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Small Decentralized Hydropower Program National ... - Cd3wd.com

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Turbina<br />

turbine<br />

gene&or<br />

generator<br />

interruptor de circuit0<br />

circuit<br />

breaker<br />

transformador de la estacih )<br />

station<br />

transformer<br />

main bus -<br />

alimentadores<br />

trifksicos<br />

primarios<br />

3 phase primary<br />

feeders<br />

transformador<br />

de distribucih<br />

distribution<br />

transformer<br />

wales no son fkiles de cuantificar. Se pueden<br />

utilizar expresiones matemgticas para determinar las<br />

selecciones m&s economicas, pero el nfimero de fac-<br />

tores es tan elevado que las expresiones se tornan<br />

<strong>com</strong>plicadas, difkiles e insatisfactorias. En conse-<br />

cuencia, NRECA ofrece las siguientes guias<br />

generales para atacar ei pianeamiento de un sistema<br />

de distribucih.<br />

linea secundaria<br />

secondary<br />

I<br />

fusible<br />

fuse<br />

lhea de conduccih<br />

monofkka<br />

single phase<br />

tap<br />

I<br />

instalaci6n en el<br />

interior de la casa<br />

interior<br />

house wiring -cl<br />

r-I\<br />

cable de servicio<br />

service wire<br />

Figura 1<br />

Figure 1<br />

215<br />

Therefore, NRECA offers the following general<br />

guides for approaching a distribution system<br />

plan.<br />

Design Voltage Selection<br />

In the United States there are four major<br />

voltage ranges for distribution equipment: 5 kV;<br />

15 kV; 25 kV; and 35 kV. Most rural electric

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