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Thread: 32A UMC Hardware Limit for 25A ?

  1. #1
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    32A UMC Hardware Limit for 25A ?

    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

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    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...dung-PlanB.pdf

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

    EmQ > smartcharge.ch online next
    Last edited by emq; 2012-01-12 at 06:25 PM.

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    Senior Member dpeilow's Avatar
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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.

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    Quote Originally Posted by dpeilow View Post
    I've charged with 32A on a 32A 60309 several times without tripping the breaker, both on B and C curve breakers.
    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. #4
    Model S R231 EU widodh's Avatar
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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.

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    #421 Model S #S32 Eberhard's Avatar
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    Quote Originally Posted by emq View Post
    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

    Name:  K800_10.1.12 026.JPG
Views: 264
Size:  71.7 KB

    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...dung-PlanB.pdf

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

    EmQ > smartcharge.ch online next
    Try this link

    http://http://idee-suisse.info/wp-co...r-Fakto_-2.pdf
    Roadster EU#421 156.000km MS Sig P85+ 68.000km

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    Quote Originally Posted by dpeilow View Post
    I've charged with 32A on a 32A 60309 several times without tripping the breaker, both on B and C curve breakers.
    That's my standard connection at home... I normally charge at 10A but have never had a problem charging at 32A on demand.

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    Quote Originally Posted by Kevin Sharpe View Post
    That's my standard connection at home... I normally charge at 10A but have never had a problem charging at 32A on demand.
    If your CEE32 is fuesed with 32A that is perfekt. In Technopark they have only 25A C Characteristic see

  8. #8
    Senior Member dhrivnak's Avatar
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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.

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    Quote Originally Posted by dhrivnak View Post
    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.
    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. #10
    Member Talkredius's Avatar
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    Quote Originally Posted by emq View Post
    Does that work in a under floor parkinghouse with no GPS Signal
    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)

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