7kW vehicles using 3-phase sockets

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Chuq
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7kW vehicles using 3-phase sockets

Post by Chuq » Thu, 17 Jan 2019, 08:45

I'm looking at all the 3-phase sockets which are out there, thanks to the efforts of the AEVA/TOCA Round Australia Electric Highway, and the number of new EVs coming to market which are AC limited to 7kW (single phase).

I have asked on the Ioniq group on Facebook whether an adaptor or cable could be built which was 3-phase 32A to 1-phase 32A - basically a simplified version of what Teslas have been using to drive around the remote parts of the country. General consensus is, not cost effective to make one, just use the existing ones (Juice Booster, etc)

Now I'm looking at this though: https://www.ewelders.com.au/ampfibian-t ... r-adapter/

I guess a device like this would be a good safety net - it allows EVs to use a 3-phase outlet, even if not to their vehicles max capacity (3.6kW output instead of 7.2kW).

I wonder if such a device could be modified *by a qualified electrician of course* - chop off the 15A socket and replace with a Type 2?* It's the same general concept - 3-phase to single phase. May also need to check the cable from the 15A socket to see if it is rated for 32A.

* There is a 32A single phase socket standard (same shape/style as the 3-phase 5 pin one, except only 3 pins). I don't think they're that common in the wild however.

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Re: 7kW vehicles using 3-phase sockets

Post by jonescg » Thu, 17 Jan 2019, 08:54

So long as there is a current interrupt in the line, it should be okay. My understanding of AS3000 says you can't have a 32 A supply and a 15 A socket without a 15 A MCB/RDC in line. Otherwise you could plug a 25 A appliance in, roast the 15 A cable section and nothing will trip.
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Re: 7kW vehicles using 3-phase sockets

Post by decryption » Thu, 17 Jan 2019, 12:06

Wouldn't you still need an EVSE with 15A support? The one that comes with the Ioniq for example maxes out at 10A (or at the very least only has a 10A plug on it).

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Re: 7kW vehicles using 3-phase sockets

Post by brunohill » Thu, 17 Jan 2019, 20:36

jonescg wrote:
Thu, 17 Jan 2019, 08:54
So long as there is a current interrupt in the line, it should be okay. My understanding of AS3000 says you can't have a 32 A supply and a 15 A socket without a 15 A MCB/RDC in line. Otherwise you could plug a 25 A appliance in, roast the 15 A cable section and nothing will trip.
So why would a 25 A appliance have a 15 A plug?

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Re: 7kW vehicles using 3-phase sockets

Post by jonescg » Fri, 18 Jan 2019, 08:55

brunohill wrote:
Thu, 17 Jan 2019, 20:36
jonescg wrote:
Thu, 17 Jan 2019, 08:54
So long as there is a current interrupt in the line, it should be okay. My understanding of AS3000 says you can't have a 32 A supply and a 15 A socket without a 15 A MCB/RDC in line. Otherwise you could plug a 25 A appliance in, roast the 15 A cable section and nothing will trip.
So why would a 25 A appliance have a 15 A plug?
Because of an internal failure of the 15 A appliance? It can happen, albeit rare.
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Re: 7kW vehicles using 3-phase sockets

Post by reecho » Fri, 18 Jan 2019, 19:15

There are EVSE's available to do this like this.. https://www.khonsevse.com/product/porta ... charger-2/

You would of course need to swap the euro blue plug for a 32A version.

For me I have some OpenEVSE parts to make up something if required. Blown up Tesla wall chargers make an excellent donor.... :-)

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