I continue the old thread "Electric systems in different regions",
Here You can see three, 3-phase medium voltage lines in the eastern Europe, going next to each other, then they are spreading in three directions to supply different areas. That shows that in some areas in Europe like Germany, in Asia or Australia 3 phases are kind of unseparable in some sense, to go to 3-phase transformers which are a conventional standard over the years. It came from it, that in rural areas people have been using till nowadays 3-phase motors to saws, pumps or grain grinders because the wires were very thin and from aluminum, so it gave lower current on every single phase. I think there is nowhere the situation when from single phase medium voltage converts to 3 phases like in North America. Which from these two infrastructures could be more expensive?
Please reply if You got some ideas

 

Where did you get that North America converts single phase to three phase?

 

Where did you get that North America converts single phase to three phase?

Yes .... it makes no sense to convert from single phase to three phase ... Unless you have machinery which runs on 3Ph and your supply is 1Ph

The whole reason for 3Ph is that it cuts down on transmission losses , so for long distances , factories and heavy consumers it makes sense , but for domestic users it creates complications .

 

Three phase transfers configured rotational power.

 

Where did you get that North America converts single phase to three phase?

Only in the short areas where is only single phase medium voltage to residential transformers

 

Only in the short areas where is only single phase medium voltage to residential transformers

I can see where a customer would do that as you described, but not the utility provider. If the customer required three phase, the supplier would provide it. It's not routine by any means.

In some cases, a half-mile is a "short" area. Some ag operations are quite the distance from the main road where the source of the three phase electricity.

https://www.agweb.com/article/three-phase_alternatives/ described the alternative you alluded to from a agricultural website.

 

I can see where a customer would do that as you described, but not the utility provider. If the customer required three phase, the supplier would provide it. It's not routine by any means.
In some cases, a half-mile is a "short" area. Some ag operations are quite the distance from the main road where the source of the three phase electricity.
https://www.agweb.com/article/three-phase_alternatives/ described the alternative you alluded to from a agricultural website.

Yes, You know I've been interesting about differnces in the electric system for some time, also from historical position, and I know that they are very significant. I've seen the article You've send and again I can see the differences, that in Europe people are like that 230/400 volts 3-phase system is everything what everybody needs from residential customers to industry, and in the USA that single phase 120/240 volts is too little for large buildings or motors and that' why You use 480v, 600v or 2400/4150v, much more the direct current and generators outside the net. In general the American system is better because You have medium voltage (at least a few kilovolts) nearly even to Your house. In Europe this 400v goes somtimes on too long distatnces and too thin wires. I've been talking about those things, here in "All About Circuits" with American members. Personally I'm supporter of direct current and it returns to favor nowadays with high voltage distribution. From direct current You can get every parameter of electricity I think, because when we want to change for example from 60 to 50 hz frequency of alternating current You need everytime the direct current.

 

By the way Merry Christmas for everyone

 

I got a question based on that what we've written before, how do You think like for American conditions, are these european 230 volts for all appliances even with the lowest power, and 400v for kitchen and garage too big voltage for household?