IEEE Power & Energy - Spanish - May/June 2018 - 107

gráfico 13. Un esquema de un dispositivo potencial con casquillos. (Del Boletín Descriptivo de Westinghouse 33-357, agosto de 1955.)

Aceite

Año Tensión MVA
1934
287
2,500
1941
287
3,500
1945
138
3,500
1947
230 10,000
1949
138
6,000
1951
161 10,000
1954
330 25,000
1960 245/362

kA
5
7
15
25
25
36
44
63

gráfico 14. La escala de calificaciones de OCB por años.

mecanismos neumáticos con diámetros
de cilindros de aire de 7 y 14 pulgadas
con funcionamiento a presión de aire
hasta 270 libras por pulgada cuadrada.
el mayor mecanismo individual con un
diámetro de 14 pulgadas operaba las
tres fases de un oCB de 345 kV en sin-
cronismo. los tres mecanismos conta-
ban con disparo libre de forma mecáni-
ca. el gráfico 11 muestra la operación

gráfico 16. Un disyuntor trifásico de
132 kV con monofases antideslizantes
montadas. (Usado con permiso de los
autores.)

de disparo libre, en la cual la conexión
mecánica se desconecta del pistón de
cierre por un diámetro de cilindro de
aire de 10 pulgadas. los mecanismos
que empleaban presión de aire tanto
para cerrar como para funcionar tenían
válvulas que ofrecían una liberación
rápida de la presión de aire del cierre
para permitir que se aplicara inmedia-
tamente la presión de aire de la apertu-
ra. se identificaban como disparo libre
de forma neumática.

Características de diseño
de modelos posteriores

gráfico 15. Un OCB de 69 kV montado en un marco. (Del Boletín Descriptivo
de Westinghouse 33-252, enero de 1961).
mayo/junio 2018

el diseño de los primeros disyuntores
consistía en dos interruptores unidos
por una pieza de metal móvil (travesa-
ño) para transportar la corriente cuan-
do se cerrara el disyuntor o para cortar
el circuito y proporcionar un espacio de
desconexión para el aislamiento cuan-
do se abriera. esta era una función im-
portante que se mantuvo en los disyun-
tores en aceite de modelos posteriores.
Además, hubo cambios significativos
ieee power & energy magazine

107



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
IEEE Power & Energy - Spanish - May/June 2018 - 2
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IEEE Power & Energy - Spanish - May/June 2018 - 124
IEEE Power & Energy - Spanish - May/June 2018 - Cover3
IEEE Power & Energy - Spanish - May/June 2018 - Cover4
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