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DC Circuit Breaker Connected Position Selection

Discussion in 'Power Electronics' started by stoui333, May 31, 2019.

  1. stoui333

    stoui333

    7
    0
    May 14, 2019
    Hi,

    I have the below block diagrams as an example.
    Drawing1.jpg
    Question 1: Circuit breaker should be placed on the input or on the output of the DCDC converter ?
    I suppose both will work but whats the effect in case of a short?

    Question 2: How do i calculate the circuit breaker amperage selection?
    Question 3: The estimate power consumption should be the peak or average for the circuit breaker selection?
    Question 4: In order to calculate the estimated Peak power consumption of multiple boards/units/modules i sum all peak power consumption values of there datasheets and multiply my a safety % factor?
    Question 5: How to avoid circuit breaker trip from in-rush & surge currents?

    Thank you,
    stoui
     
  2. Bluejets

    Bluejets

    3,439
    696
    Oct 5, 2014
    Started to answer this but then realised it looks like homework.:)
     
  3. WHONOES

    WHONOES

    650
    130
    May 20, 2017
    Consider what might happen in each situation.
     
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