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Phase Voltage vs. Line Voltage: Understanding Key Differences & Applications

skorczybyk 51316 6
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 2031413
    skorczybyk
    Level 2  
    What is the difference between phase voltage and line voltage?
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  • #2 2031446
    Aleksander_01
    Level 43  
    Hello
    Phase voltage is the voltage of a given phase measured between the given phase and the neutral of the generator.

    The line voltage is the voltage between two different phases of the generator (grid).

    In Poland U phase = 230 V AC, and wired = 400 V AC.
    Regards
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  • #3 2036327
    Arnold_S.
    Level 26  
    In other words: 230V*√3 ≈ 400V

    These are effective values.
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  • #4 4038759
    Buio Omega
    Level 1  
    In that case, what is the definition of inter-wire voltage because I have just met such in the literature.
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  • #5 4039019
    Aleksander_01
    Level 43  
    Buio Omega wrote:
    In that case, what is the definition of inter-wire voltage because I have just met such in the literature.

    Hello.
    Wire-to-wire, otherwise wire-to-phase or phase-to-phase.
    All these names denote the same thing, i.e. the voltage between the phases of the generator.
    Regards
  • #6 11469331
    allmaz
    Level 9  
    gentlemen, I'm sorry but... The stupidity is that I can even measure these quantities, but it turns out that I don't know what it is. I looked at Orlik's book "Qualification exam ......." page 39

    IN
    Y
    if=IP,
    Up=√3Uf
    Reverse triangle

    So, taking into account what I wrote, please explain to me what is phase current, phase voltage, line voltage, line current.

    Because in a triangle we have a relationship
    Ip=√3If triangle
    if=Ip Y
    It will be more efficient to explain it on the magnitudes of the current IMHO.
  • #7 11469380
    zbich70
    Level 43  
    allmaz wrote:
    gentlemen, I'm sorry but...

    Do you think the author is still interested in the topic created 7 years ago? :sm9:
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Topic summary

Phase voltage refers to the voltage measured between a single phase and the neutral point of a generator, while line voltage is the voltage measured between two different phases. In Poland, the standard phase voltage is approximately 230 V AC, leading to a line voltage of about 400 V AC, which can be calculated using the formula 230V * √3 ≈ 400V. The term "inter-wire voltage" is synonymous with wire-to-wire or phase-to-phase voltage, indicating the voltage between phases. Additionally, discussions included the relationships between phase current, phase voltage, line voltage, and line current, particularly in the context of Y (wye) configurations in electrical systems.
Summary generated by the language model.
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