OpenEVSE Charging Station any Users?

Discussion about EV/Battery charging infrastructure, Electric highways etc.
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lobster
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OpenEVSE Charging Station any Users?

Post by lobster » Tue, 05 Nov 2019, 13:02

I am need to purchase a 7kW EVSE for home and use on interstate trips.

There are some compact devices that would seem suitable for travelling and taking on board the vehicle.

This Khons product is available from the manufacturer in China or Re-branded from local suppliers at well over $1000.

https://www.khonsevse.com/product/porta ... charger-2/


On these Forum Pages I have noticed brief mentions of the American made OpenEVSE Charging Station. These are available as Kits or fully assembled units.

An Advanced Series - 32A IEC Type 2 Mennekes Kit Bundle is priced at US $459.00 plus freight & GST.

This seems ideal for me, as I hold an A Class Licence I could assemble it as a portable plug-in unit.

https://store.openevse.com/products/adv ... kit-bundle


Could anyone who has used an OpenEVSE product, please share their opinion on their experience?

Cheers
Last edited by lobster on Thu, 07 Nov 2019, 06:55, edited 1 time in total.

lobster
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Re: OpenEVSE Charging Station any Users?

Post by lobster » Wed, 06 Nov 2019, 16:48

Bump.

Forum searches for OpenEVSE show these members jonescg, doggy, brunohill, reecho, and seem to indicate possible assembly, use or ownership of an OpenEVSE charge station.

I would appreciate any feedback on these type2 capable chargers.

Cheers

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reecho
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Re: OpenEVSE Charging Station any Users?

Post by reecho » Thu, 07 Nov 2019, 09:32

OpenEVSE has been brilliant so far. I have assembled a single phase version with 32A 3 phase plug for my Kona and also a 3 phase 32A version with long leads for a spare. They don't out of the box have DC offset protection but that can be mitigated with a correctly chosen RCBO in the supply. I use the firmware releases from here https://github.com/openenergymonitor/op ... /releases/ as they are correctly setup for EU limits. The Wifi function is great. You can use it in client or standalone mode. Kwh metering isn't entirely accurate as there is no voltage offset but it's reasonably close. Timed charging works with no issue.

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jonescg
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Re: OpenEVSE Charging Station any Users?

Post by jonescg » Thu, 07 Nov 2019, 09:54

I've been using @reecho 's OpenEVSE on the Prelude while I test it. Unfortunately it's the only EVSE which seems to work reliably with the Prelude conversion. So I will be inclined to buy it (or a similar single phase version) for leaving with Francess. The 3-phase cables are way too heavy for the job.
AEVA National Secretary, WA branch chair.

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reecho
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Re: OpenEVSE Charging Station any Users?

Post by reecho » Thu, 07 Nov 2019, 11:31

Pics:
Attachments
OpenEVSE Single Phase.jpg
OpenEVSE Single Phase.jpg (2.75 MiB) Viewed 143 times
OpenEVSE 3 Phase.jpg
OpenEVSE 3 Phase.jpg (359.36 KiB) Viewed 143 times

lobster
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Re: OpenEVSE Charging Station any Users?

Post by lobster » Thu, 07 Nov 2019, 21:31

Thanks for your replies, Those OpenEVSE photos are great. Is that 3 phase unit squeezed into a smaller local box, I can't judge the dimensions of box and those thicker cables?

Chris, I will also require a single phase unit for my EV, so the convenience of lighter weight and more flexible cables should suit my needs well.

For portable use charging an EV at showgrounds, workshops, caravan parks etc, I suppose a long extension cord would be better than having a much longer input cable than the one shown in the top photo?

I need the Type2 socket but their cable is only 5 metres or 16.45 feet long and their J1772 cable is a more useful 25 feet. I think having the shorter output cable could possibly have the EVSE box lying on the ground to be accidentally damaged by pedestrians or other adjacent vehicles. Can anyone share their thoughts length vs convenience?

Is the 32A OpenEVSE with Type2 socket interface able to adapted to an input supplied from a 15A or 10A socket and then limit the output current to the EV? I believe the Khons EVSE has selectable output modes to achieve this.

Richard, an RCBO installed in the home switchboard is achievable, but when taking the openEVSE on trips would you be recommending to have a portable RCBO? Would it not require a ventilated and water resistant enclosure?

Regarding the firmware changes is that done over WiFi, USB or a special programmer?

Cheers

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reecho
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Re: OpenEVSE Charging Station any Users?

Post by reecho » Fri, 08 Nov 2019, 07:22

lobster wrote:
Thu, 07 Nov 2019, 21:31
Thanks for your replies, Those OpenEVSE photos are great. Is that 3 phase unit squeezed into a smaller local box, I can't judge the dimensions of box and those thicker cables?

Chris, I will also require a single phase unit for my EV, so the convenience of lighter weight and more flexible cables should suit my needs well.

For portable use charging an EV at showgrounds, workshops, caravan parks etc, I suppose a long extension cord would be better than having a much longer input cable than the one shown in the top photo?

I need the Type2 socket but their cable is only 5 metres or 16.45 feet long and their J1772 cable is a more useful 25 feet. I think having the shorter output cable could possibly have the EVSE box lying on the ground to be accidentally damaged by pedestrians or other adjacent vehicles. Can anyone share their thoughts length vs convenience?

Is the 32A OpenEVSE with Type2 socket interface able to adapted to an input supplied from a 15A or 10A socket and then limit the output current to the EV? I believe the Khons EVSE has selectable output modes to achieve this.

Richard, an RCBO installed in the home switchboard is achievable, but when taking the openEVSE on trips would you be recommending to have a portable RCBO? Would it not require a ventilated and water resistant enclosure?

Regarding the firmware changes is that done over WiFi, USB or a special programmer?

Cheers
1) Yes it's a three phase unit. There is a 40A 4 pole Clipsal contactor squeezed in there.
2) With single phase Type 2 you can generally order any length you want. The Blue Mennekes cable (bought from Tesla AU) was 7.5m for reference. That seems like a good length for travel. Oh and the black cable on the 3 phase was salvaged from a dead Tesla destination charger. Yes they fail....A lot..
3) You can adjust current on the OpenEVSE from 6 to 32A in 1A steps. Very good for sites with lower quality supply. The Khons and other might only have 3 or 4 steps.
4) The OpenEVSE has GFCI included in the kits. While Making an inline RCBO is an option I haven't considered it yet.
5) Firmware updates are done via USB Programmer. The separate WiFi module gets updates via web gui.. https://store.openevse.com/products/openevse-programmer
OpenEVSE Dwelly.jpg
OpenEVSE Dwelly.jpg (2.73 MiB) Viewed 119 times

lobster
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Re: OpenEVSE Charging Station any Users?

Post by lobster » Fri, 08 Nov 2019, 15:43

Chris & Richard,

thanks for the good advice and installation photos.

I have ordered an Advanced Series - 32A IEC Type 2 Mennekes Kit Bundle with a 7.6m /25ft cable and a USB Programmer.

Cheers Steve

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