1. Create Your User Profile and Status Updates

    Arc Flash Forum members are invited to create a user profile. Let others know who you are, what you do and even add a picture or avatar of yourself. What are you up to? Let people in the arc flash and electrical safety community know with "status updates"!
  2. Welcome to the All New Arc Flash Forum

    Arc Flash Forum is a community where we help each other learn about arc flash and electrical safety. There is still much to be learned about arc flash, standards, PPE, studies and more and We need your HELP!

    If you have good information about Arc Flash - Post It! If you have a question about Arc Flash - Post It! If you can provide answers to Arc Flash questions - Post it!

    Sign up as a today member! Feel free to link to this site www.arcflashforum.com. Tell your friends. We want to help everyone be safe in the workplace!
  3. Bigger and Better!

    As you have no doubt noticed, the forum has been through quite an upgraded and looks and feels very nice! There are loads of new features and ways in which this site can now be even more useful to the community in learning about Arc Flash and Electrical Safety.

    Create your detailed user profile
    Add a profile photo of yourself
    Like the forum on Facebook
    "Like" users' posts
    Publish your articles in the library
    ...and much, much more!

    Learn More About the New Features Here
Create Your User Profile and Status Updates Welcome Message Arc Flash Forum has been Upgraded!

DC Arc Flash Calculations

Discussion in 'General Discussion' started by TAGarfield, Sep 26, 2007.

  1. TAGarfield New Member

    Does anyone know of any DC forumlas for Arc Flash yet? What are people doing with regard to DC systems?
    TAGarfield, Sep 26, 2007
    #1

  2. brainfiller Administrator

    Performing DC Arc Flash calculations, and how to handle DC Arc Flash protection is a pretty common question because there is not a very straight forward answer - yet! During the IEEE 1584 committee meeting a few weeks ago, we were told that some DC testing was FINALLY completed this year. As probably many people know, there has not been much testing in a while. IEEE and NFPA joined forces for the next effort and those efforts just recently began. The DC results are not yet public but formulas will be devloped based on the tests. What I did hear from one of the people directly involved in the test is the results were not exactly as expected. i.e. you would think the RMS AC current might produce a similar arcing energy as it's DC conterpart for the same duration. This was not the case. The duration and effect of zero crossing vs. no zero crossing was looked at as well.

    For now, many people use the hazard risk tables under the premise that it is better than doing nothing.

    When I hear more details that I am allowed to pass on, I will post them here.
    brainfiller, Oct 2, 2007
    #2

  3. BSafe New Member

    DC Arc Flash

    Will the new formulas be suitable for DC traction power systems?
    BSafe, Oct 4, 2007
    #3

  4. Michael Furtak New Member

    Michael Furtak, Jun 25, 2008
    #4

  5. J Farrow New Member

    Just to bring this to the top. I am interested in the results of the DC studies, although I believe the 2009 guidelines will put our low voltage Solar Panels in the category of not needing Arc Flash analysis. We are waiting for our copy of the 2009 NFPA.
    J Farrow, Oct 29, 2008
    #5

  6. Terry Becker Member

    DC arc flash tests were completed by Bruce Power

    The actual tests were completed already at the Kinetrics lab in Mississauga, ON, Canada by Bruce Power.

    The results are available, but they will not release any information at this time.

    Results will most likely be released via the IEEE NFPA collaborative project.

    Regards;
    Terry Becker
    www.esps.ca
    Terry Becker, Nov 30, 2008
    #6

  7. RobGOlson New Member

    Any Progress on DC Arc formulas?

    Does anyone know what is the current best practice is for calculating Arc Flash Boundaries for DC and HVDC (+/- 200 kV DC)? The only thing I've been able to find on DC is a limit of approach in the NESC Table 441-4.
    RobGOlson, Dec 14, 2009
    #7

  8. Riani New Member

    DC Arc Flash

    Is there any new information in how to perform arc-flash in DC systems?

    How industrial plants deal with it? Sometimes is impossible de-energized the DC equipment and use IEEE-1584 to estimate arc-flash is not the right thing to do.

    Is there any comment in the NFPA-2009 edition? Is there any prevision when IEEE group will publish the guidelines do DC systems?
    Riani, Feb 17, 2010
    #8

  9. arcflash71 Member

    It's been a few months, has anyone heard anything?
    arcflash71, May 17, 2010
    #9

  10. brainfiller Administrator

    brainfiller, May 18, 2010
    #10

Share This Page