Induction hob for 2 phases, 230V, can I work at maximum power?

I would like to buy an induction hob for a new apartment where I will connect a 3-phase one.
Unfortunately, the board I chose can only be connected to 230V and I wonder if I can connect it to two phases, 230V each and thus use the full connection power of 7.6kW?

I know that there are several topics about it, but there is no definite answer. Some people write that I can connect the left fields to one phase and the right field to the other, but they also write that if necessary, the power on the disc can be limited to, for example, 4kW - I do not want to limit it. If I have 4 fields, I want to be able to use all of them 100% as needed.
I also heard the opinion that if I have this 3-phase circuit, why limit myself and it is definitely better to buy 400V. But is it really better, or does it really make no difference?

For my understanding, if I have 7.6kW and connect to 400V, I will have 19A current in the cables - only 1A reserve for the fuse.
When I connect to 2 phases, 230V each, I will supply 3.8kW power for each phase, i.e. a current of 16.5A - 3.5A reserve to the fuse.
So the network will be less loaded by connecting 2 phases individually to 230V than to 400V phase-to-phase. Am I right ? Because my calculations show so, and the opinions are always that 400V is better. Why ?

PS. If it mattered, I will be connecting a 3.6kW cooker for phase 3.

Divide the power by 3 and you will have an average load per phase.

Well, I wrote that I connect the oven to phase 3 and divided it into 2, but I do not know if my calculations are good (see paragraph 3 of my post)

And I also found the statement that confused me the most (after all, how is it, if I connect to 2 phases, do I have it on each 1/2 power or not?):
"Note: there are induction hobs that the manufacturer has dedicated to powering from one phase, but electrically it is possible to connect to two phases. However, connecting to 2F will not get any benefits, because we will not balance the phase loads, and we will not increase the total power of the cooking zones. The total heating power is electronically limited in the controller "

pixem wrote:

but electrically it is possible to connect to two phases. By connecting to 2F, however, we will not get any benefits, because we will not balance the phase loads, and we will not obtain an increase in the total power of the heating fields.

The 2-phase connection takes the strain off the Neutral and Phase cables so that the benefits are great.

And how you connect the disc, she writes in its manual.

Well, in the manual you can connect to 1 phase and 230V for 2 phases, but there is no possibility of 400V interphase.

So I have to understand that this statement that I found and quoted in the 2nd post is nonsense and I had an installment in what I wrote in the 3rd paragraph of the first post, that by connecting to 230V for 2 phases, I load the installation even less than at the 400V interphase?
So in the end, even with a 3-phase connection, it is better to buy such a board than one for 400V?

Buddy, you're confusing the concepts, hope you don't burn the plate because of these thoughts.


Neither board is connected to 400V.

Cool, nothing will burn because I will not connect it myself. For now I want to buy a CD and I am wondering which of the following two to buy:
http://www.oleole.pl/plyty-do-zabudowy/bosch-...tml?from=pla&gclid=CKik2LXMnMcCFUr2cgodtdYEoQ
http://www.oleole.pl/plyty-do-zabudowy/bosch-pic645f17e.bhtml#opis

The first one is better for me and cheaper, but has 230V in the description, and the second one has 230V and 400V in the description.

I would like the former, but if it turned out that I could only work at half its power, waste of money.

pixem wrote:

but if it turns out that I will only be able to work at half its power, it's a waste of money.

After all, this one has 2 ceramic fields and 2 induction fields and the other one has 4 induction fields, so decide what you want to have.

Sorry, I pasted the wrong link. In any case, the second induction hob is 230V and 400V
http://www.oleole.pl/plyty-do-zabudowy/bosch-pie651b17e.bhtml#opis

https://www.elektroda.pl/rtvforum/topic2907128.html

Here you have it written like a bull that it is 2x230V and not 400V, moreover, the manual does not write how to connect.

I will say this, maybe we do not understand each other because I am a layman and I talk about what they write in the descriptions and there is always 230V or 400V written there. I do not know if it is 400V, it is 2x230V or not.
I just mean if I can connect the first disc so that I can use its full power because if I connect 7.6kW for 1 phase, it will blow the fuse.
When I looked at the electrolux discs, all of them were 400V. Is it 400V electrolux, was it also 2x230V?

And there is such a picture in the instruction manual

Interestingly, for both discs, the same ... now I don't know if it's only shops that write what they want, and each disc is connected in the same way ?!

400V boards are 3-phase boards, why don't you want to buy dedicated 3f boards if you have the installation connected?

Because this Bosch suits me in terms of price and appearance functions, and if I can connect it so that I can use it 100%, why should I look for another?
Well, the question is whether it is possible, because still no one answered me whether it can be connected so that I can work in all fields at maximum power.

Besides, now, when I was looking for instructions from other manufacturers, all the connections I found had connections like in the picture I uploaded, i.e. 2x230V. I have not found a diagram with a 400V connection, i.e. between 2 phases.

pixem wrote:

I have not found a diagram with a 400V connection, i.e. between 2 phases.

Because it does not exist, because I would know about it.

Of course, in each connection configuration you have full heating power on the side.

Per page, that is, that I can only use 2 fields?

Ie. I understand that when connected to one phase as in Fig. 1, I can only use one side (2 fields) at 100% power, and when connected according to the scheme of the second 2x230V, I can use both sides (4 fields) at 100% power at the same time, yes ?

Quote:

Ie. I understand that when connected to one phase as in Fig. 1, I can only use one side (2 fields) at 100% power, and when connected according to the scheme of the second 2x230V, I can use both sides (4 fields) at 100% power at the same time, yes ?

Two heating zones are powered by 230 V, i.e. L1 - N
Two further heating zones are powered by 230 V, i.e. L2 - N
L1, L2, L3, N, PE are connected to the connection box supplying the board, the connection is done as I wrote above. On our market, the cooking zones and electronics are designed for 230 V, so 400 V FOR THEM IS KILLING.
L3 does not connect to the hob, it can be an alternative to an oven on a separate electric circuit. Some people misinterpret the 400 V voltage in the connection to the board, which is often the cause of its wrong connection and damage. On the Internet you can find the name three-phase hob, which does not reflect the truth about the power supply to the heating fields, the hob connection diagram bows.
How about electric powers?
7400W / 2 = 3700.3700 / 230 = 16.08 A two burners on one phase L1
similarly as above 16.08 A another two burners from the L2 phase
One-phase connection of 7400W / 230 = 32A is a lot. The load capacity for one phase, as can be seen, is twice as high, and therefore larger cross-sections of the conductors and higher fuse values. Some producers use automatic power limitation supposedly up to 5kW. Buyer's decision what and how

I haven't seen 400V boards yet, they are 2x230V, which is a significant difference. The board is made as two receivers for 230V and, as a result, it can be powered from one phase or from two phases, but this does not mean that it works on 400V.

Exactly. The board requires a 230V power supply. Single-phase. Or 2 × 230V two-phase. But they have to be separate phases, not that we split one phase into two. And then, under high load, it works with full power in phase-to-phase. Between two phases. In fact, such a situation occurs rarely or not at all. That is why there are 400V markings on the plate. The neutral wire is common.