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  1. pintodacosta

    Neutral distributed / Neutral no

    Please take a look at the 2 screenshots
  2. pintodacosta

    Neutral distributed / Neutral no

    hi, I am sizing a cable that comes from a 3ph distribution board to distribution board lets call him Board 1 that will feed 3phase and 1 phase loads. In order i can make some calculations i need to know the Iminshortcircuit. Please take a look at the example, that i attach, and tell me please...
  3. pintodacosta

    Neutral distributed / Neutral no

    waross: if we have: - 3phase system 3 wire,there is no neutral, this means no distributed neutral; - 3phase system 4 wire (L1+L2+L3+N), this means the neutral is distributed in my case i have a TNS earthing system, and i have a 3 phase 5 wire (l1+L2+L3+N+PE), i consider this neutral...
  4. pintodacosta

    Neutral distributed / Neutral no

    Good afternoon, Can anyone explain me the defirence between a 3phase system with neutral not distributed and with neutral distributed. Always made big confucion on that. tx
  5. pintodacosta

    URGENT - Eletrical board consumption

    Tx all for the clarifications.
  6. pintodacosta

    URGENT - Eletrical board consumption

    Hi, my confusion is this: The feeder that i have has a 800A free to deliver. Actually there are some loads connected, I measured the line currents, and at the moment there are aproximately 100A per phase. In therms of feeder occupation or usage, Iam using 100A (thismeans i have 700 A free), or...
  7. pintodacosta

    URGENT - Eletrical board consumption

    Bill, i remain with the same doubt.... according the current measured for phase R, what is the current absorved by the load?
  8. pintodacosta

    URGENT - Eletrical board consumption

    Skogsgurra, The doubt is the following (sorry is a basic doubt, but i was never able to clarify it. I have measure the current in phase R, of a 3phase system, 2 cable runs per phase, and the result was 50 Amps in each cable of phase R. identycal currents were measured in the phases S and T...
  9. pintodacosta

    URGENT - Eletrical board consumption

    Hi, 1st tx all for the answers. when i have a 3phase feeder, the current given by him or absorved by the load, is always equal to current in 1 phase? or the total current absorved is the sum of the current in the 3phases. rgds
  10. pintodacosta

    URGENT - Eletrical board consumption

    Hi all, I have an issue that i have doubts, and that i describe above: I have a 3phase (400V)feeder capacity 800A in the substation, from this feeder exit the 3 phases (R,S,T), each phase has 2 parallel conductors of 240mm2. Question1: I measure the currents in each cable of each phase, and...
  11. pintodacosta

    Feeder current

    Tx to all for the support
  12. pintodacosta

    Feeder current

    Hi, The voltage level is 230/400. it comes from a feeder located in a private substation. rgds
  13. pintodacosta

    Feeder current

    Hi, I have a 3 electrical boards (3phase 380/230) to feed from a substation. Electrical Board 1: S=46KVA Electrical Board 2: S=46KVA Electrical Board 3: S=120KVA The current that each eletrical board will "consume" is calculated by: I = S/(sqrt 3 *400) Is this correct?

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