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#249271 - 07/31/12 02:26 PM Power outage in India - 600 million dark
TeacherRO Offline
Carpal Tunnel

Registered: 03/11/05
Posts: 2574
The sheer size of this event is amazing -- Fully half the country without power.

Link to CNN story

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#249282 - 07/31/12 04:05 PM Re: Power outage in India - 600 million dark [Re: TeacherRO]
Diosces Offline
Newbie

Registered: 09/03/10
Posts: 26
Loc: New Jersey
True the scale is astounding, imagine whoel population of USA x 2 without power...

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#249328 - 08/01/12 12:46 PM Re: Power outage in India - 600 million dark [Re: TeacherRO]
spuds Offline
Old Hand

Registered: 06/24/12
Posts: 822
Loc: SoCal Mtns
And its possible it could even be a worldwide event lasting who knows how long.

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#249331 - 08/01/12 02:38 PM Re: Power outage in India - 600 million dark [Re: TeacherRO]
TeacherRO Offline
Carpal Tunnel

Registered: 03/11/05
Posts: 2574
Events of this scale are had to imagine.

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#249335 - 08/01/12 03:29 PM Re: Power outage in India - 600 million dark [Re: TeacherRO]
Russ Offline
Geezer

Registered: 06/02/06
Posts: 5357
Loc: SOCAL
Not really that hard to imagine. A high altitude nuc' weapon burst could cause an EMP which could trigger a very widespread power outage. What's hard to imagine is what this would look like in the second month. Unlike India, much of the damage from an EMP would be to hardware not easily or quickly replaced... or so I've read.

Meanwhile, power has been restored in India.
_________________________
Better is the Enemy of Good Enough.
Okay, what’s your point??

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#249336 - 08/01/12 04:51 PM Re: Power outage in India - 600 million dark [Re: Russ]
haertig Offline
Pooh-Bah

Registered: 03/13/05
Posts: 2322
Loc: Colorado
Originally Posted By: Russ

From that article:
Quote:
When the grid collapsed, the frequency was 50.2 hertz, he said, which is normal. Had states been overdrawing, the frequency would have dropped well below that level, he added.

I'm scratching my head on that statement. True that my electrical engineering degree is maybe a couple decades out of date, but I think they probably meant the voltage would have dropped, not the frequency. But then, I specialized in the low voltage side of EE, not the power distribution side. We called those power folks "hummers", because everything they touched hummed.

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#249338 - 08/01/12 05:39 PM Re: Power outage in India - 600 million dark [Re: haertig]
LesSnyder Offline
Pooh-Bah

Registered: 07/11/10
Posts: 1680
Loc: New Port Richey, Fla
ok... how do you get an electric wall clock to work on 50.2 Hz?

a 43/36 gear reduction?

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#249339 - 08/01/12 05:43 PM Re: Power outage in India - 600 million dark [Re: LesSnyder]
haertig Offline
Pooh-Bah

Registered: 03/13/05
Posts: 2322
Loc: Colorado
Originally Posted By: LesSnyder
ok... how do you get an electric wall clock to work on 50.2 Hz?

a 43/36 gear reduction?

I doubt many clocks these days depend on power line frequency as their timebase. It is inheritantly inaccurate.

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#249350 - 08/01/12 07:52 PM Re: Power outage in India - 600 million dark [Re: haertig]
dougwalkabout Offline
Crazy Canuck
Carpal Tunnel

Registered: 02/03/07
Posts: 3241
Loc: Alberta, Canada
Originally Posted By: haertig
]When the grid collapsed, the frequency was 50.2 hertz, he said, which is normal. Had states been overdrawing, the frequency would have dropped well below that level, he added.
I'm scratching my head on that statement.


IIRC, 50.x Hz is normal for a 220/240 grid system. Unlike us in North America, where 60Hz and 110/120 is the standard.

So I guess it just hums a few notes lower. grin


Edited by dougwalkabout (08/01/12 07:52 PM)

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#249353 - 08/01/12 08:14 PM Re: Power outage in India - 600 million dark [Re: TeacherRO]
spuds Offline
Old Hand

Registered: 06/24/12
Posts: 822
Loc: SoCal Mtns
Except for the microwave all my clocks are battery,I HATE it when the power goes off and the alarm doesnt....GRRRRR!

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