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TEPCO/CHAdeMO Level III "quick" charging station/connector

dsm363

Roadster + Sig Model S
May 17, 2009
18,278
151
Nevada
Is there a good primer/explanation of single phase vs. 3 phases charging, the advantages of each...etc? I've read through some of the PDFs linked here already.
 

TEG

Teslafanatic
Aug 20, 2006
21,719
8,690
The really really short version is that drawing off only a single phase when 3 phases are available limits the max power you can get. So if you don't support 3 phase charging you are likely charging slower than you could otherwise.

There are also issues with causing unbalanced loads which could be unfriendly to equipment (such as transformers) back up the line. When 3 phase is available it would be best to use all 3 but it isn't done routinely due to issues with cost, connection standards (or lack thereof) and complexity.

You can see why some people get a bit heated about it. It is a bit of a 'shame' when 3 phase is available but you can't take full advantage of it.
 

dpeilow

Moderator
May 23, 2008
9,151
888
Winchester, UK
It's more than that.

Places with 3 phase often have the power for an HPC available but split across the three phases.

In some countries, the utilities or authorities won't let you pull high power on a single phase - even 32A.
 

jkirkebo

Model S P85+ VIN 14420 EU
Jun 13, 2010
961
12
Fredrikstad, Norway
It's more than that.

Places with 3 phase often have the power for an HPC available but split across the three phases.

In some countries, the utilities or authorities won't let you pull high power on a single phase - even 32A.

Yeah, if the Model S does not support 3-phase I'm going to be limited to 16A 230V charging at home. Maybe I'll be able to up it to 20A if I take care to not put it across the same phases as the oven, but certainly no more.
 

TEG

Teslafanatic
Aug 20, 2006
21,719
8,690
Some photos of the Vacaville install ...
attachment.php?attachmentid=624&d=1268891830.jpg

Perhaps a bit of stigma associated with that Logo now...
 

Eberhard

#421 Model S #S32
Oct 17, 2010
1,147
11
Germany
it's also easier to rectify 3-phase AC to DC with much less rippel to be compensate and creating less noise (harmonic waves) to the grid which is a real problem with single-phase.
 

TEG

Teslafanatic
Aug 20, 2006
21,719
8,690

savuporo

Member
Aug 28, 2006
8
0
This standards issue for L3 charging should be given some wider publicity. Most of the press reporting about EVs coming to the market seem to be completely unaware of fast charge option in the first place.

The situation seems to be :
1) Chademo/JARI is widely deployed in Japan, The EV Project Home ECOtality is planning deployments in US
2) SAE hasnt yet published their J1772 Level 3 DC "extension" specs, and obviously nobody has implemented it
3) Europe has a separate fight between France and Germany around the Mennekes charger evolution ?


The EV & green transportation press seems to be completely quiet on the new "BetaMax vs VHS" though.
A good example, in Top Gear Fights Back At Tesla - Slashdot nobody even mentioned the fast charge possibility. Obviously, Roadster in the test could not have been fast charged anyway. But if it were, the 55 miles reported range in track tests would be a complete nonissue.
 

benji4

Roadster 2.5 #0476
Nov 7, 2010
438
2
Tokyo, Japan
You have to wonder what kind of resources TEPCO has left to push CHAdeMO now. It probably hasn't even popped into their heads at all over the past month... The LEAF charging in the photo sure is happy I bet as you almost need CHAdeMO to drive it if you are considering anything more than just a drive around town. I'm really hooked on the Roadster's range, it's so nice to be able to go 200+ miles and never have to worry about charging. The only thing that could get me in a LEAF or car with similar range now would be CHAdeMO charge points all over the place, and certainly Japan had been looking good in that respect as we can see from this map --->

CHAdeMO Part1 - Google Maps
 

Lloyd

Well-Known Member
Jan 12, 2011
6,252
2,039
San Luis Obispo, CA
It does not look like the Cable would reach to the rear recepticle where depicted on the model S on the left rear quadrant! Do we have to carry a Level III extension cord?
 

TEG

Teslafanatic
Aug 20, 2006
21,719
8,690
It does not look like the Cable would reach to the rear recepticle where depicted on the model S on the left rear quadrant! Do we have to carry a Level III extension cord?

At this point, it seems unclear where exactly Model S will have the charge port.
Also, unclear if it would support CHAdeMO charging.

How exactly you will be able to recharge Model S seems one of the remaining questions, possibly still being debated by Tesla themselves.
 

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