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32A UMC Hardware Limit for 25A ?

Discussion in 'Europe' started by emq, Jan 12, 2012.

  1. emq

    emq Member

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    #1 emq, Jan 12, 2012
    Last edited: Jan 12, 2012
    Professor Dr. Anton Gunzinger CEO of SCS "super computing systems" bought a Tesla Roadster for there 70 Engeniers. The max charging current Technopark Immobilien AG offered is 25A. Has someone Expierience in modifie the UMC for 25A max, so they can not trip the Fuse with 32A charging selection. The Fuse is in a locked technical room, were only maintenance Peoble have access.
    My sugestion is to install a CEE 125 -5pole, conected to a 2000A busbar with 3ph 80A fuse Adapter and a privat meter. Then plugin a HPC for 70A charge. This installation could cost 5000 Euro.

    So limit the UMC Hardware for 25A is much cheaper, but waste the warranty, if not done by Teslaotors.

    Anton Gunzinger was very disapointed when i explaned him: behind the CEE32-5 22kW plug there is only 7,2kW Charging power
    He thougt 25A x 400V X square root 3 > 17,3 kW is good enogh He orderd only 16A because he thought 11kW is ok, but Technopark gave him there 25A max.

    The UMC should come with a CEE32-3 plug like in Nederlands

    K800_10.1.12 026.JPG

    a Link for german speaking people.

    Plan B oder Faktor 10: Anton Gunzingers visionary aproch for a future energy solutions

    http://www.scs.ch/fileadmin/pdfs/SCS_Einladung-PlanB.pdf

    "Plan B oder Faktor 10" Denkanstoss - Toni Gunzinger, SCS - Kurzfassung on Vimeo

    EmQ > smartcharge.ch online next
     
  2. dpeilow

    dpeilow Moderator

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    I've charged with 32A on a 32A 60309 several times without tripping the breaker, both on B and C curve breakers.
     
  3. emq

    emq Member

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    I asume C32A B32A fuse.

    In Technopark there is a C25A fuse. 32A / 25A > factor 1,28

    C25A max factor 1,13 > 28A max. for contiuose current.

    C specifications Overload factor 1,13 - 1,45 trips in a hour > 28A - 36A

    EmQ does not support solutions with accidental behavier
     
  4. widodh

    widodh Model S R231 EU

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    Why don't you change the current in the Roadster itself? It will remember the setting based on the GPS location.
     
  5. Eberhard

    Eberhard #421 Model S #S32

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    Try this link

    http://http://idee-suisse.info/wp-content/uploads/Denkanstoss_Plan-B-oder-Fakto_-2.pdf
     
  6. Kevin Sharpe

    Kevin Sharpe Active Member

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    That's my standard connection at home... I normally charge at 10A but have never had a problem charging at 32A on demand.
     
  7. emq

    emq Member

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    If your CEE32 is fuesed with 32A that is perfekt. In Technopark they have only 25A C Characteristic see
     
  8. dhrivnak

    dhrivnak Active Member

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    On the charging screen in the Roadster you can dial down the current to 24amps. The car will remember the location and charge accordingly. It is a 10 second software setting.
     
  9. emq

    emq Member

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    Does that work in a under floor parkinghouse with no GPS Signal

    SCS Supercomputing systems has 70 Engineers with access to the roadster, Charging takes 32/24 > 133%
     
  10. Talkredius

    Talkredius Member

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    dialing down of course, remembering should be tested, perhaps the Roadster remembers the last received GPS position.
    On the other hand, one of 70 engineers should be able to modify the small electronic piece in the UMC, which tells the car the max current it can draw, at least the old ones (grey boxes like the one I have) can easily be disassembled)
     
  11. emq

    emq Member

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    It is the new one with 32A, the old was 30A.
    It is no tecnical problem, it is an organisational one, The boss, who is also a friend of mine, does not care about this problem and has not yet determind a responable one to care.
    It is difficult for me, to see a unsolved problem, what i can easily fix.
     

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