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James Sweet[_2_]

wrote:
In alt.engineering.electrical Tzortzakakis Dimitrios wrote:

| A shame that Tesla won the infamous "battle" and we don't have DC:-() But
| then, we would be having a power plant at each neighborhood, instead of the
| 300 MW ones.

And the latter make easy terrorism targets, too.

| I know, I know, my answer was a bit provocative:-) And of course there are
| DC regulators.... You're talking about DC generators;the one a 300 MW uses
| for excitation is 220 V, 1000 A DC and probably shunt field. I have seen
| here in some machine shops the old type welding generator, which is a 3
| phase induction motor coupled to (usually) a compound field DC generator,
| which provides the welding current. The modern ones are, maybe, not larger
| than a shoe box and powered by a higher wattage 230 V 16 A receptacle.
| (Usual receptacles are 230 V 10 A;16 A for washing machines, dryers and the
| like).

You don't use 400 V for anything heavy duty like an oven?

In North America, 240V 50A is pretty standard for ovens, some are 40A,
clothes dryers are 30A, most other stuff plugs into a 15A 120V receptacle.

[email protected]

In alt.engineering.electrical James Sweet wrote:
|
| wrote:
| In alt.engineering.electrical Tzortzakakis Dimitrios wrote:
|
| | A shame that Tesla won the infamous "battle" and we don't have DC:-() But
| | then, we would be having a power plant at each neighborhood, instead of the
| | 300 MW ones.
|
| And the latter make easy terrorism targets, too.
|
|
| | I know, I know, my answer was a bit provocative:-) And of course there are
| | DC regulators.... You're talking about DC generators;the one a 300 MW uses
| | for excitation is 220 V, 1000 A DC and probably shunt field. I have seen
| | here in some machine shops the old type welding generator, which is a 3
| | phase induction motor coupled to (usually) a compound field DC generator,
| | which provides the welding current. The modern ones are, maybe, not larger
| | than a shoe box and powered by a higher wattage 230 V 16 A receptacle.
| | (Usual receptacles are 230 V 10 A;16 A for washing machines, dryers and the
| | like).
|
| You don't use 400 V for anything heavy duty like an oven?
|
|
|
| In North America, 240V 50A is pretty standard for ovens, some are 40A,
| clothes dryers are 30A, most other stuff plugs into a 15A 120V receptacle.

But we don't have an easy option for any higher voltage. In many parts of
Europe, three phase 400/230V is delivered to homes. Then using 400V, either
2 lines or all 3 lines, is an option.

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