MV levels of the world?

[Denan]

Hello people!

My first post on this forum (great!, by the way). I was searching the internet for voltage levels in MV distribution grid in different countries of the world. I could not find any site having that information. Found only one:

http://en.wikipedia.org/wiki/List_of_countries_with_mains_power_plugs,_voltages_and_frequencies

but that is not what I need...

Can anyone help, please? Thanks!

 

[magoo2]

North America has a bunch of standardized medium voltages and they are found in ANSI C84.1-2006. The following are the dominant 4-wire multi-grounded neutral systems:
12470Y/7200
13200Y/7620
24940Y/14400
34500Y/19920

There are also some 3-wire systems in North America, namely:
13800, 6900 and 4160

The rest of the world has 3-wire MV systems and you'll find that 11 kV and 33 kV are the common ones.

 

[Denan]

Thanks magoo2!

I am interrested in a list, showing many (most of) coutries. I know that in Holland e.g. they use 10,5kV, in Portugal-6,3kV, India-6,6kV, Bangladesh-11kV etc, but I need the rest of the world (up to 15-20 kV).

I think I have seen a list like that once, but can not remember where/when.

 

[lz5pl]

Just some countries from my experience:
Nigeria - 11kV, 33kV
Egypt - 11kV, 22kV
Ethiopia - 15kV, 33kV
Iran - 20kV, others?
Iraq - 11kV, 33kV
Albania - 10kV, 20kV, 35kV
Bulgaria - 6.3 kV, 10kV, 20kV

All these voltages are for distribution grid, not generator voltages.

Probably other voltages also are used in these countries, but these are according to my knowledge. At least in Oil Industry they use their standards anywhere, even separated 60Hz installations in countries with 50 Hz grid.

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It may be like this in theory and practice, but in real life it is completely different.
The favourite sentence of my army sergeant

 

[ScottyUK]

Try thread238-175672 for some further information.


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Sometimes I only open my mouth to swap feet...

 

[jraef]

For North America:

http://www.geocities.com/thomas_b_34654/apmsaev.htm

The problem with a list which addresses all the choices in the world is this: who would need to know that to fund such a study? For any given engineer in any given country, all he/she needs to know is what is available there. The answer is, people who need to sell equipment in all those countries, and when information is useful only for commercial purposes, it becomes a valuable asset, i.e. someone is going to sell it!
Energy Business Reports link Note the $3995 price tag!

That said, some people have started on more altruistic projects like that. You may find this interesting;
GENI Link

JRaef.com
"Engineers like to solve problems. If there are no problems handily available, they will create their own problems." Scott Adams
For the best use of Eng-Tips, please click here -> faq731-376

 

[EEIre]

From my experience:

Ireland: 10kV, 20kV, 38kV, 66kV, 110kV
Saudi Arabia: 4.16kV, 13.8kV (can't rember the higher ones)
Singapore: 22kV

 

[Denan]

Thank you all!

I am aware of that it's not usual to ask for this kind of information, but as jraef said, it is for a kind of commercial purpose. I thought that it could be somewhere on the internet.

But thanks again!

 

[rbulsara]

India has other voltages too: 3.3kV, 6.6kV, 11kV and 22kV (just above 20).

Add to magoo's list: 13.8kV, 4.16kV, 4.8kV