Amerika'da 3-faz gerilim değeri nedir?

merhaba
Bu bir devlet politikasıdır.İnsan sağlığını önde tutan gelişmiş ülkeler voltajı az frekansı yüksek tutarlar ve o oranda da daha kalın bakır tel kullanırlar(ısı enerji kaybı fazladır ".Daha ekonomik olsun diye 220 volt ve 50 hz kullananılan ülkelerde bakır tel de o oranda çapı azalır.(ısı kaybı daha azdır).Tabii bir konu da standart kavgasıdır.Ama benim bildiğim tamamen insan sağlığı ile ilgilidir.
 

Frekansın yüksek olmasının avantajı nedir ki?
 
frekansın yuksek olması haberleşme sırasında daha az veri kaybe ve daha iyi iletişim avantajı sağlar
 
120/208 60hz kullanılıyor sebebi alternatif akım kullanılmaya başlamadan önceki ABD şebekelerinin ve yüklerin 100 v dc ye uygun olmasıdır, diğer ülkeler önceki kısma yetişememiş , daha sonra daha mantıklı olan 220 v ac standartıyla şebekelerini tesis etmişlerdir. yani Amerika'da öyle gelmiş öyle gidiyor başka sebebi yok.
 
aşağıda yabancı bir forum sitesinden aldığım bilgi var.

"Orignally, house current in the US was 100/200 volts and then Thomas Edison bumped up the voltage to 110/220 so that the customers at the far end of the system would get 100 volts instead of 90 volts. The customers at the far end then demanded 110 volts so he bumped up the generators to 120/240 volts. He then told the far away customers the 110/220 was good enough. This is partly how Japanese house current is 100 volts.

The American National Standards Institue Class A limit is 110 to 120 volts against a 120 volts base. Multiply for other other voltages. The class B limit for short term abnormal conditions is 105 to 125 volts.

The voltage goal is 120 volts at the secondary terminals of the distribution transformer. After allowing for voltage drop the motor needs to be able to operate at 440 to 480 volts under normal conditions and 420 to 500 volts abnormal.

Most of out 230/460 volt dual voltage motors are now designed able to tolerate operation off of a 120Y208 volt commercial power system using only 1 connection for both 120Y208 volts and 240 volts. Thanks to advances in insulation and magnetic materials the only 200 volt motors still being made are specialized motors such as submersible well pump motors. I have also seen motors built to run on 50 Hertz 220Y380 volts (Britsh) 500 volts (German) and 60 Hertz 416 volts (Australian and Paraguayan) and 480 volts (US) without changing any taps - the machine has dual diameter belt sheaves for dual frequency operation.

How we have 120/240 volts 4-wire delta 3-phase a.k.a. red leg delta a.k.a. rural delta was to have a cheap way to supply farms and residential air conditioning with cheap 3 phase power. Two transformer in the open delta configuration would be used to supply small amounts of 3 phase and in the case of load growth we would upgrade to 3 transformers using a 3-wire wye primary. The National Electrical Code official color for the high leg is orange but that conflicts with the 277Y480 volt colors - I would use orange with red stripes as a compromise.

Back in the mid 1960s central air conditioners had to be 3 phase because single phase motor technology was not good. Even though todays single phase air conditioners are better some utilities have gone back to requiring residential ari conditioners and heat pumps that are over 36,000 BTU per hour to be 3 phase. This is because a 3 ton heat pump has a 4.5 horsepower freezer compressor in it anything over that size needs to be 3 phase."
 
Dünyada kullanılan gerilimler.

Şimdi küçük bi sorunumuz kaldı . Bu ülkelere gidip ; gerilimleri seçen insanları bulup , ağam neden bu gerilimi seçtin diye sormak.

Seçen neden seçtiğini biliyosa , bizede anlatır.


ülke / gerilim / frekans
Afghanistan 220V / 50Hz
algeria 127/220V / 50Hz
American Samoa 120/240V / 60Hz
Andorra 220-230V / 50Hz
Angola 220V / 50Hz
Anguilla 240V / 50Hz
Antigua 230V / 60Hz
Argentina 220V / 50Hz
Aruba 115/127V / 60Hz
Australia 240V / 50Hz
Austria 220-230V / 50Hz
Azores 220-230V / 50Hz
Bahamas 120V / 60Hz
Bahrain 220V / 50Hz
Bangladesh 220V / 50Hz
Barbados 115V / 50Hz
Belarus 220V / 50Hz
Belgium 220-230V / 50Hz
Belize (Br.Hond.) 110V / 60Hz
benin 220V / 50Hz
Bermuda 120V / 60Hz
Bolivia 110-115/220V / 50Hz
Bosnia-herzegovina 220V / 50Hz
Botswana 220V / 50Hz
Brazil 110-220V / 60Hz
Bulgaria 220V / 50Hz
Burkina Faso 220V / 50Hz
Burma 230V / 50Hz
Burundi 220V / 50Hz
Cambodia 120-220V / 50Hz
Cameroon 220-230V / 50Hz
Canada 120V / 60Hz
Canary Islands (Spain) 220V / 50Hz
Cape verde, Rep. of 220V / 50Hz
Cayman Islands 120V / 60Hz
Central African Rep. 220V / 50Hz
Chad 220V / 50Hz
Channel Islands 240V / 50Hz
Chile 220V / 50Hz
China, People's Rep. of 220V / 50Hz
Christmas Isl. (Aust.) 240V / 50Hz
Cocos Isl. (Austrail.) 240V / 50Hz
Colombia 110-220V / 60Hz
Congo, Rep. of 220V / 50Hz
Cook Island (N.Z.) 240V / 50Hz
Costa Rica 120V / 60Hz
Croatia 220V / 50Hz
Cuba 120V / 60Hz
Curacao Island 110-220V / 60Hz
Cyprus 240V / 50Hz
Czech Republic 220V / 50Hz
Denmark 220-230V / 50Hz
Djibouti, Rep. of 220V / 50Hz
Dominica 230V / 50Hz
Dominican Rep. 110V / 60Hz
Ecuador 120V / 60Hz
Egypt 220V / 50Hz
El Salvador 115V / 60Hz
England 240V /50Hz
Equatorial Guinea 220V / 50Hz
Estonia 220V / 50Hz
Ethiopia 220V / 50Hz
Fiji 240V / 50Hz
Finland 220-230V / 50Hz
France 220-230V / 50Hz
French Guyanda 220V / 50Hz
Gabon 220V / 50Hz
Gambia 220V / 50Hz
Germany 220-230V / 50Hz
Ghana 220V / 50Hz
Country Voltage / Frequency
Gibraltar 240V / 50Hz
Greece 220-230V / 50Hz
Greenland (Den.) 220V / 50Hz
Grenada 230V /50Hz
Guadeloupe 220V / 50Hz
Guam 110-120V / 60Hz
Guatemala 120V / 60Hz
Guinea 220V / 50Hz
Guinea-Bissau 220V / 50Hz
Guyana 110V / 50-60Hz
Haiti 110-120V / 50-60Hz
Honduras 110V / 60Hz
Hong Kong 200V / 50Hz
Hungary 220V / 50Hz
Iceland 220V / 50Hz
India 220-250V / 50Hz
Indonesia 220V / 50Hz
Iran 220V / 50Hz
Iraq 220V / 50Hz
Ireland 220V / 50Hz
Isle of Man 240V / 50Hz
Israel 230V / 50Hz
Italy 220-230V / 50Hz
Ivory Coast 220V / 50Hz
Jamaica 110V / 50Hz
Japan 100V / 50-60Hz
Jordon 220V / 50Hz
Kenya 240V / 50Hz
Korea 220V / 50-60Hz
Kuwait 240V / 50Hz
Laos 220V / 50Hz
Latvia 220V / 50Hz
Lebanon 110-120V / 50Hz
Lesotho 240V / 50Hz
Lettonia 220V / 50Hz
Liberia 120V / 60Hz
Libya 127-230V / 50Hz
Liechtenstein 220V / 50Hz
Lithuania 220V / 50Hz
Luxembourg 220-230V / 50Hz
Macao 220V / 50Hz
Madagascar 220V / 50Hz
Madeira (Portugal) 220V / 50Hz
Majorca 220V / 50Hz
Malawi 230V / 50Hz
Malaysia 240V / 50Hz
Maldives 230V / 50Hz
Mali, (Rep. of) 220V / 50Hz
Malta 240V / 50Hz
Martinique 220V / 50Hz
Mauritania 220V / 50Hz
Mauritius 230V / 50Hz
Mexico 127V / 60Hz
Moldova 220V / 50Hz
Monaco 220V / 50Hz
Mongolia 220V / 50Hz
Montseurrat 230V / 60Hz
Morocco 220V / 50Hz
Mozambique 220V / 50Hz
Namibia (W.S. Africa) 220-250V / 50Hz
Nepal 220V / 50Hz
Neth. Antilles 120V / 60Hz
Netherlands 220-230V / 50Hz
New Caledonia 220V / 50Hz
New Guinea 220V / 50Hz
New Zealand 230V / 50Hz
Nicaragua 120V / 60Hz
Niger 220V / 50Hz
Nigeria 230V / 50Hz
No. Ireland 220V / 50Hz
Country Voltage / Frequency
No. Mariana Is. 115V / 60Hz
Norfolk Is. (Aust.) 240V / 50Hz
Norway 220-230V / 50Hz
Okinawa 110-120V / 60Hz
Oman 240V / 50Hz
Pakistan 230V / 50Hz
Panama 110-120V / 60Hz
Papua New Guinea 240V / 50Hz
Paraguay 220V / 50Hz
Peru 110-120V / 50/60Hz
Philippines 115V / 60Hz
Pitcairn Is. (U.K.) 240V / 50Hz
Poland 220V / 50Hz
Portugal 220-230V / 50Hz
Puerto Rico 120V / 60Hz
Qatar 240V / 50Hz
Romania 220V / 50Hz
Russia 220V / 50Hz
Rwanda 220V / 50Hz
Saudi Arabia 127-220V / 50/60Hz
Scotland 220V / 50Hz
Senegal 220V / 50Hz
Serbia 220V / 50Hz
Seychelles 240V / 50Hz
Sierra Leone 230V / 50Hz
Singapore 230V / 50Hz
Slovakia 220V / 50Hz
Somalia 110-220V / 50Hz
South Africa 220-250V / 50Hz
Spain 220-230V / 50Hz
Sri Lanka 230V / 50Hz
St. Kitts & Nevis 230V / 60Hz
St. Lucia 240V / 50Hz
St. Pierre & Miquelon 115V / 60Hz
St. Vincent 230V / 50Hz
sudan 240V / 50Hz
Surinam 115V / 60Hz
Svalbard (Norway) 220V / 50Hz
Swaziland 230V / 50Hz
Sweden 220-230V / 50Hz
Switzerland 220-230V / 50Hz
Syria 220V / 50Hz
Tahiti 220V / 50 Hz
Taiwan 110V / 60Hz
Tanzania 230V / 50Hz
Thailand 220-230V / 50Hz
Togo 220V / 50Hz
Tonga 115V / 60Hz
Trinidad & Tobango 115-230V / 60Hz
Tunisia 220V / 50Hz
Turkey 220V / 50Hz
Uganda 240V / 50Hz
Ukraine 220V / 50Hz
United Arab Emir. 220-230V / 50Hz
United Kingdom 240V / 50Hz
United States 120V / 60Hz
Uruguay 220V / 50Hz
Venezuela 120V / 60Hz
Vietnam 120-220V / 50Hz
Virgin Islands 120V / 60Hz
Wales 220V / 50Hz
Western Samoa 230V / 50Hz
Yemen 220V / 50Hz
Yugoslavia (former) 220V / 50Hz
Zaire, Rep. of 220V / 50Hz
Zambia 220V / 50Hz
Zimbabwe 220V / 50Hz
 
Cevap yazmak için giriş yap yada kayıt ol.

Benzer Konular

Trafo Gerilim Düşümü
2 3
Cevaplar
24
Görüntüleme
3K
servetd
Kablo kanalları, iletken kesiti, harmonik filtreler hakkında
Cevaplar
8
Görüntüleme
1K
Dr.Trafo
Turkiye ile Amerika arasindaki elektrik tip farklari nedir?
Cevaplar
6
Görüntüleme
2K
Erhan_TR
Nötr- toprak arası gerilim dalgalanması
4 5 6
Cevaplar
58
Görüntüleme
7K
akbasoglu
Nötr tam olarak nedir? Detaylı sorular.
2
Cevaplar
19
Görüntüleme
6K
sami inci
Menü
Giriş yap
Kayıt ol
Bu siteyi kullanmak için çerezler gereklidir. Siteyi kullanmaya devam etmek için onları kabul etmelisiniz. Daha fazla bilgi edin…