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electronicman
Joined: 07 Nov 2004
Posts: 60
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 05 Jan 2005 15:59 transmission lines frequency ? |
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all we know that the transmission line frequency in europe and asia
is about 50Hz to 60Hz my question is that ..why we use 50 or 60
why we don't use ,by example 30Hz or 100Hz .is it international
standard or there is some thing behind theoritically or practically.
so why we choose those two frequncies only.?
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papyaki
Joined: 13 Apr 2002
Posts: 564
Helped: 19
Location: A small village somewhere in Gaul
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| 05 Jan 2005 16:08 Re: transmission lines frequency ? |
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Hi,
Read this :
h**p://www.school-for-champions.com/science/ac_world_volt_freq.htm
replace * by t
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flatulent
Joined: 19 Jul 2002
Posts: 4866
Helped: 292
Location: Middle Earth
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| 05 Jan 2005 17:04 Re: transmission lines frequency ? |
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| It was an economic tradeoff in the early days. Higher frequency made less material in the transformers which lowered the cost of the transformers. Higher frequency made more loss in the transformer which made higher operating cost for the wasted power.
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e_eja
Joined: 15 Nov 2003
Posts: 145
Helped: 4
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| 06 Jan 2005 6:04 Re: transmission lines frequency ? |
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i think it/ depent on this consideration:
1. harmonic frequency
2. safety
3. Torsion is build more in low rotation turbin (generator turbine)
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