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Connecting Device to 400V: Using Three-Phase Power Safely

hub811 20952 13
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 7436679
    hub811
    Level 11  
    Hello
    I have another question that may or may not be stupid.
    I know that the socket has a phase voltage of 220V.
    Sila is three phases of 220V. Phase-to-phase voltage is 400V.

    My question is if I have a device that needs 400V. How to get something like that?
    If I connect two phases of power, will there be a short-circuit or will the voltages add up?

    Regards
    Thanks for the answer
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  • #2 7436700
    ajpier
    Level 36  
    Read and do not connect the two phases.
    To view the material on this forum you must be logged in.
  • #3 7436781
    hub811
    Level 11  
    Great, thanks a lot.
    I don't know if I understand correctly, but I can't get more than 200v at home.
  • #4 7436786
    ajpier
    Level 36  
    If you don't have power, you won't get it. Not 200V but 230V
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  • #5 7436790
    krzyjak
    Level 29  
    Buddy, for some time the rms value of the voltage between the phase and neutral wire in the socket has been 230 V. What is this device that is powered by 400 V? Are you sure it is alternating voltage. And in general, if you ask such questions, I think that you should not mess with the phase wires. Phase and phase-to-phase voltage is very dangerous for people.
  • #6 7436815
    hub811
    Level 11  
    Hello

    I have the strength and my questions are purely theoretical because I want to understand this issue well.
    I have strength but in strength is 3X230. Won't the phases connect?
  • #7 7436832
    ajpier
    Level 36  
    Maybe tell us what you would like to get from these 400V. Do you have a specific device to power or just boredom kills you during the holidays. :D
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  • #8 7436840
    hub811
    Level 11  
    If I did, I'm sure my post would be blocked, so I can't :) .
    But in general, I started to get a little interested in these issues and I'm more and more interested in it.

    Added after 8 [minutes]:

    But I read that the average voltage is about 6kV.
    How is the voltage reduction, are there transformers between high mid and low?
    Are the cables from which the electricity from the poles is connected to 230V?
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  • #9 7436884
    ajpier
    Level 36  
    The average voltage is up to 6KV
    Transformers are used to reduce the voltage.
    You mentioned that you have brought strength.
  • #10 7436974
    Zygaqra
    Level 35  
    hub811 start reading, it's not the Middle Ages. You can learn a lot from books and by the way you will learn Polish grammar and spelling. Judging by the questions you're asking, I wouldn't advise you to go anywhere above 12V if you want to welcome in the New Year with us. Stick to insulation buddy!
  • #11 7437122
    hub811
    Level 11  
    Yes, Zygar
    I'm sure you're good at grammar and spelling.
    If you were going to write advice like that, you wouldn't be answering.
    Yes, I keep a lot of books related to this topic, you just need to read it.
    I don't want to offend anyone, but since my knowledge is not very great and yours certainly isn't either, that's why I write in the beginners section.

    Added after 1 [minutes]:

    I have strength. But from what I understand, the force is only three phases with a phase shift with the same amplitude, i.e. some 230V.
  • #12 7437147
    polprzewodnikowy
    Level 26  
    But notice that at some point there is +220V on 1 wire and -220V on the other which is about 400V AC.
  • #13 7437181
    hub811
    Level 11  
    hmmm

    Okay, but I don't get it.
    Because it can't be summed up. We connect three phases to the motor, it spins.
    And if I had a 400V heater, in this case I probably won't get such a voltage???

    I know my questions are probably stupid, but I'm sorry.

    Moderated By prezeswal:

    One more post, written with complete disregard for the rules (in particular p.8.2 and p.15) and there will be further sanctions provided for in the rules.

  • #14 7439142
    prezeswal
    VIP Meritorious for electroda.pl  
    Regulations p.8.2, p.11.2, p.15 and p.16 => basket.
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Topic summary

The discussion revolves around the query of obtaining a 400V supply from a standard 220V socket, which typically provides a phase voltage of 230V. Users emphasize the dangers of connecting two phases directly, as it could lead to short-circuits. It is clarified that the phase-to-phase voltage in a three-phase system is indeed around 400V, but caution is advised against manipulating phase wires without proper knowledge. The conversation also touches on the use of transformers for voltage reduction and the importance of understanding electrical systems before attempting any connections. The author expresses a desire to learn more about electrical systems and the implications of phase voltages.
Summary generated by the language model.
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