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In search of a fuse that limits arc flash incident energy

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    #16
    We had a Mersen engineer make a presentation on arc flash reducing strategies using fuses. Check out the link for more info.

    https://ep-us.mersen.com/services-do...energies-fuses

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      #17
      Originally posted by jtinge View Post
      We had a Mersen engineer make a presentation on arc flash reducing strategies using fuses. Check out the link for more info.

      https://ep-us.mersen.com/services-do...energies-fuses
      Since arc currents are typically much lower than the available fault current and not in the current limiting range of current limiting fuses, the fuses won't clear in the required 0.07 seconds.

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        #18
        Originally posted by pv_n00b View Post

        Since arc currents are typically much lower than the available fault current and not in the current limiting range of current limiting fuses, the fuses won't clear in the required 0.07 seconds.
        That’s a lot of assumptions. Arcing currents are around 50-100% of available fault current. The current limiting range is a separate issue. It is linked to the fuse rating but neither one is related to the available fault current. It’s not uncommon to see both high enough that the fuse easily current limits and trips on both arcing and bolted faults, particularly when they are fairly small.


        Sent from my iPhone using Tapatalk

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