IEEE Power & Energy - Spanish - May/June 2018 - 106

su funcionamiento. la energía almace-
nada del resorte cumplía con abrir los
disyuntores. A medida que la confiabi-
lidad de los mecanismos mejoraba con
su desarrollo, se utilizaban fuentes de
energía de aire comprimido o de siste-
mas hidráulicos tanto para abrir como
para cerrar el disyuntor. se muestra un
mecanismo típico de solenoides en el
gráfico 8. estos mecanismos eran ca-
paces de proporcionar períodos de inte-
rrupción de cinco ciclos. este es uno de
los primeros mecanismos en proporcio-
nar la función de disparo libre. el dis-
paro libre ahora es un requisito están-
dar que permite abrir inmediatamente
un disyuntor, incluso si la operación de
cierre está en marcha, dando lugar así a
una operación de cierre y apertura. el
gráfico 9 es un esquema de una opera-
ción de disparo libre del mecanismo de
solenoides.
los períodos de interrupción más
breves y las corrientes más altas reque-
rían mayor energía, provocando que los

gráfico 11. El tipo de mecanismo
pneumático AA-10 de Westinghouse
en posición de disparo libre. (Del
Boletín Descriptivo de Westinghouse
33-350, junio de 1959.)

gráfico 12. Una vista de la sección
transversal de un OCB de 138 kV. (Del
Boletín Descriptivo de Westinghouse,
33-253, mayo de 1960.)

mecanismos usaran aire de alta presión
y que posteriormente se desarrollaran
mecanismos hidráulicos. los sistemas

de disparo para una liberación más
rápida requerían rediseños completos.
el gráfico 10 muestra un conjunto de


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Table of Contents for the Digital Edition of IEEE Power & Energy - Spanish - May/June 2018

Contenidos
IEEE Power & Energy - Spanish - May/June 2018 - Cover1
IEEE Power & Energy - Spanish - May/June 2018 - Cover2
IEEE Power & Energy - Spanish - May/June 2018 - Contenidos
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IEEE Power & Energy - Spanish - May/June 2018 - Cover3
IEEE Power & Energy - Spanish - May/June 2018 - Cover4
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