| why is the frequency is 50 hz in india...can we use some other
| frequency?if so what is the range and what will be the effect in
| present power system if we change the frequency as you suggest?
That's because you guys kicked the Brits out _after_
you got electricity,
rather than _before_
like the Americans did.
Feel free to change it to 60 Hz or some other frequency, if you want.
60 Hz should work fine with most of the 50 Hz transformers, and even give
you 20% more voltage range if the insulation had been overrated (don't
count on it).
But who would pay for it?
Seriously, you're stuck with this legacy of the British Empire unless you
want to expend some HUGE costs retrofitting. In the very early years of
electric power in America and Europe, there was quite a mix of not only
frequency, but also voltage. One of my grandfathers was an electrician
in the 1920's to 1940's (he switched over to the cable TV business in the
1950's and if he were alive and kicking today I'm sure he'd be into the
internet) and told me stories of some of the electrical systems he worked
on that ran on 16 Hz and 25 Hz that primarily served coal mines, but in
a couple cases also served the local town. At least all the small weird
electric power companies that picked their own voltage and frequency long
ago have died off. I've heard of 33 Hz, 40 Hz, and even one that supplied
500 volts directly to homes (I wouldn't be all that concerned about such
voltage if it were the standard today, but long ago, electricity was so
much more dangerous due to poor practices of the age).
Consider the case of two countries that have mixed frequency power. They
can't readily change even that, despite having substantial motivation to
do so (Japan and Brazil as far as I know).
You also have 220, 230, or 240 volts per the British Empire. But that is
probably to your benefit (except for incandescent lights, but fluorescent
lights work great on that voltage, not needing the special starters we
have to use in 120 volt land). If you have some really big appliances,
like a big oven or kiln, you might have three phase power available and
can run things on 380, 400, or 415 volts and save on expensive copper wire.
Still, I'd be curious what kind of electrical system India would have
chosen had it never been under the control of the British Empire or any
other external influences. Would they have chosen one of the existing
systems or gone with something entirely different?
| Phil Howard KA9WGN (ka9wgn.ham.org) / Do not send to the address below |
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