IEEE Power & Energy Magazine - Spanish - July/August 2021 - 106

aire requeridos daban lugar a un diseño
menos que compacto. Además,
encontraron que el tiempo en que los
arcos estaban presentes provocaba un
aumento de la resonancia inaceptable
en la tensión que, posteriormente, derivaba
en más fallas por el aislamiento
dañado. La figura 5 muestra un arco
alargado durante
unas
pruebas
en
Kalamazoo, Michigan.
Por otra parte, General Electric comenzó
a desarrollar un interruptor que
podía extinguir un arco con aceite. A
partir de su trabajo en la Metropolitan
Traction Co. de la ciudad de Nueva
York, los ingenieros se dieron cuenta
de que la potencia instalada de los
generadores y la forma en que estaban
conectados a su carga pronto requeriría
un nivel de protección que no se
había diseñado aún. El resultado fue el
interruptor en H. Unos años después,
Westinghouse abandonaría el concepto
de aire y produciría su propio interruptor
en aceite.
El interruptor de aceite se había utilizado
durante varios años. C.E.L. Brown,
de la europea Brown Boveri, diseñó uno
de los primeros interruptores en aceite
en 1898. Elihu Thomson patentó un interruptor
manual en 1894, y Alexander
Wutz, ingeniero de Westinghouse, también
patentó un interruptor. Pero estos no
eran interruptores de potencia.
General Electric fue el primero de
los grandes fabricantes de equipos en
trabajar en un interruptor eléctrico de
aceite. Para 1900, había puesto en servicio
un interruptor de circuito eléctrico
de aceite de 6,000 V en el Ferrocarril
Metropolitano (figura 6), que fue designado
en H. La primera instalación de
este interruptor fue en el sistema bifásico
de la segunda central de Adams en
las Cataratas del Niágara, Nueva York
(figura 7). Para ese entonces, Westinghouse
se percató de las limitaciones
del interruptor de aire y, en 1905, lanzó
su interruptor tipo G. En esa época, el
término conmutador de aceite había
cambiado a interruptor en aceite.
La figura 8 muestra el recipiente
de aceite de un disyuntor en H. Según
E.M. Hewlett, ingeniero de GE con varias
patentes que trataban sobre la interrupción
de corriente en un análisis
de una publicación de 1919 en AIEE
Transactions de A.R. Cheyney, la alta
capacidad de ruptura del interruptor
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106
ieee power & energy magazine
23/03/13 10:38 AM
(a)
(b)
figura 8. Un recipiente de aceite de un interruptor. [Fuente: A.R. Cheney, " The
Modern Oil Switch With Special Reference to Systems of Moderate Voltage
and Large Ampere Capacity " (El interruptor de aceite moderno con referencias
especiales a sistemas de tensión moderada y gran capacidad de amperios), AIEE
Transactions, vol. 29, parte 2, pág. 1122, 1910. Análisis de E.M. Hewlett].
(continúa en la pág. 117)
julio/agosto 2021
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IEEE Power & Energy Magazine - Spanish - July/August 2021

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - Spanish - July/August 2021

Contents
IEEE Power & Energy Magazine - Spanish - July/August 2021 - Cover1
IEEE Power & Energy Magazine - Spanish - July/August 2021 - Cover2
IEEE Power & Energy Magazine - Spanish - July/August 2021 - Contents
IEEE Power & Energy Magazine - Spanish - July/August 2021 - 2
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IEEE Power & Energy Magazine - Spanish - July/August 2021 - Cover3
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