IEEE Power & Energy Magazine - Spanish - September/October 2020 - 107

en la estación de ferrocarril más cercana en Rawalpindi y sorteaba elevaciones de hasta 7,400 pies. La carretera
Jhelum Valley Cart (JVC) era un ruta
importante para todo tipo de clima que
conectaba el valle con el Raj británico.
La ruta fue utilizada con intensidad por
pasajeros que viajaban en diligencias
de dos ruedas, denominadas tongas.
Todos los materiales para la central
se tuvieron que transportar en carros
tirados por cuatro bueyes, dos enganchados al frente y dos atrás. Si bien
la carga permitida era de 4  toneladas,
el peso preferido era de 2  porque los
costos de flete si se superaba ese peso
eran exorbitantes en ese momento. La
especificación de la licitación estipulaba que ninguna pieza de maquinaria
debería pesar más de 4  toneladas al
empaquetarse.
La central eléctrica estaba ubicada
lejos de la instalación de fabricación;
era imposible adquirir piezas de repuesto sin sacrificar tiempo considerable.
Además, la central eléctrica debía estar

manejada esencialmente por lugareños
que no tenían experiencia previa con
ese tipo de trabajo. En circunstancias
extraordinarias, se puede contar con
ellos solo dentro de los límites de su experiencia. La lejanía de la instalación,
las duras condiciones de transporte y la
falta de disponibilidad de personal calificado hicieron que los ingenieros adopten un tamaño de unidad más pequeño,
de 1,000 kW. Además, para reducir las
dimensiones, el peso y el costo de las
máquinas, se adoptó una velocidad de
rotación más alta (500 r/min), aunque
una velocidad más lenta hubiese resultado más eficiente. Desde la cámara de
carga en adelante, cada una de las unidades se independizó completamente
para mantenimiento. Las condiciones
del contrato incluían el mantenimiento y la conservación de toda la central
durante, al menos, un año después de la
finalización de las obras.
El equipo eléctrico lo suministró
General Electric, Schenectady, Nueva
York, y el equipo hidráulico lo produjo

m Va

Aliviadero

carretero
Camino

de

Tubería forzada

Elevación del nivel
de agua (superior) 3,969.5 ft
Cámara de carga

Co

ndu

cto

A

Niv

el b

ajo

de

agu

a

des

car

ga

Jhelu

Río Jhelum

A

Entrada
principal

lley

Central eléctrica

Abner Doble, San Francisco. Desafortunadamente, toda la obra de Abner
Doble fue destruida por un incendio en
abril de 1906. La empresa tuvo que tomar medidas inmediatas para cumplir
con sus pedidos, entre los que destacó
la maquinaria para la central eléctrica
de Mohra. El equipo eléctrico se envió
desde Nueva York a través del Canal de
Suez; el equipo hidráulico viajó en parte de la misma manera y el resto navegó
desde San Francisco a través de Hong
Kong. La central generadora comenzó
a llegar a fines de 1906. Debido a las
nevadas excesivas durante el invierno,
los envíos se detuvieron en Rawalpindi
porque la carretera JVC estaba cerrada
al movimiento de cargas pesadas. El
transporte se reanudó durante la primavera, y la central completa se entregó a
fines de 1907.
La central eléctrica en la que se alojaban la rueda hidráulica, el generador
y otras máquinas era un enorme edificio a dos aguas, de aproximadamente
188 pies de largo, 86 de ancho y 60 de

Elevación piso de
central eléctrica 3,569 ft

Carretera JVC

Sección AA

figura 4. El plan y la elevación seccional de la instalación eléctrica de Mohra. (Adaptado de "Jhelum power plant (La
central eléctrica de Jhelum"), J. Electricity Power Gas, vol. 16, n.º 1, enero de 1906).
septiembre/octubre 2020	

ieee power & energy magazine 	

107



IEEE Power & Energy Magazine - Spanish - September/October 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - Spanish - September/October 2020

Contents
IEEE Power & Energy Magazine - Spanish - September/October 2020 - Cover1
IEEE Power & Energy Magazine - Spanish - September/October 2020 - Cover2
IEEE Power & Energy Magazine - Spanish - September/October 2020 - Contents
IEEE Power & Energy Magazine - Spanish - September/October 2020 - 2
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IEEE Power & Energy Magazine - Spanish - September/October 2020 - Cover3
IEEE Power & Energy Magazine - Spanish - September/October 2020 - Cover4
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