@Charlie1, thanks for the photos and feedback of the new solar DLB unit. Looks like it’s been completely redesigned and is also din-rail mounted, making it much easier to install.
Tradezone doesn’t yet have it in stock, but I’d expect them to get it in soon.
Has anyone got the 3 phase version of the new DLB running? I was wondering how it behaved with a single phase car?
The ZJ Beny Selection Guide doc states:
1-Phase from 1.3kW to 7.4kW
3-Phase from 4.1kW to 22kW
Would I be right in assuming that the limit is actually on current, so that if I bought the 3 phase EVSE, then it would actually output 1.3kW to 7.4kW to a single phase car? Or would the lower limit be 4.1 kW?
My second question is how the DLB handles unbalanced phases? If I’m exporting say 9 kW (3 kW per phase) before plugging the car in, I’d obviously like it to charge at the full 7.4 kW, but is this how the system behaves? Or does it balance per-phase, so would only send 3 kW to the car in this situation?
Thanks to the early adopters in being so generous with information here.
@PVEVHP, from what I have heard, a 3-phase charger will split the power evenly across the 3 phases. For example, if you have a 11kW 3-phase charger, it will only deliver 3.6kW per phase, which means connecting to an EV that only accepts single-phase AC charging like the BYD Atto 3, then it will only charge at a max of 3.6kW.
Therefore, if you purchase a 3-phase charger, it’s worth getting a 22kW 3-phase model and a full 32A 3-phase supply so you can charge at 7kW per phase.
Thanks for that, I agree that a 16A charger wouldn’t be a good idea (I don’t think ZJ Beny even sell an 11 kW model), to that end I’m planning to get a 22 kW EVSE, I’ve already had cables roughed in that are rated for 40A per phase, along with two ethernet cables.
I understand that 22 kW 3-phase should enable me to charge a car with a single phase charger at up to 7.4 kW.
What I’m not sure about is the behaviour at less than full speed:
The ZJ Beny Selection Guide doc states:
1-Phase from 1.3kW to 7.4kW
3-Phase from 4.1kW to 22kW
Would I be right in assuming that the limit is actually on current, so that if I bought the 3 phase EVSE, then it would actually output 1.3kW to 7.4kW to a single phase car? Or would the lower limit be 4.1 kW?
My second question is how the DLB handles unbalanced phases? If I’m exporting say 9 kW (3 kW per phase) before plugging the car in, I’d obviously like it to charge at the full 7.4 kW, but is this how the system behaves? Or does it balance per-phase, so would only send 3 kW to the car in this situation?
I believe so.
I’d be very surprised if it did. These boxes are just glorified switches as far as the power is concerned, and with a single-phase car it’s probably just going to ignore two phases.
Yes, it does output 1.3kW to 7.4kW to a single phase car. The 4.1kW limit is the lowest current the 3-phase charger will operate. (The lower limit on my Single-phase Beny charger 1.3kW)
In regards to how it handles unbalanced loads, I’m not sure how it balances the charge current? That’s a good question
Has anyone else had any luck sourcing the Aus DLB unit? Tradezone just emailed me and aren’t carrying any ZJBeny stock going forward, and I’m struggling to find anyone who is stocking the single phase unit.
Someone posted somewhere on Whirlpool recently that they’d had an update from Ultipower (ultipower.com.au) saying they’re awaiting a shipment.
I got a replacement Aus DLB for single phase from UPF.operation@ultipower.com. au
Josh 1300757577. Brisbane
Very happy with ZjBenny in Solar mode. Powers the house from Solar first and then what is over goes to my ATTO 3 .A great economical system. I just connect around 8.30am and let ZjBenny do the rest.
@Svarky thanks again for your insights for the charger and correct positioning for the CT’s.
I managed to get the original Solar DLB running as intended. First attempt gave the DLB error, but a quick repositioning of the CT’s solved that, and now have both hybrid and full PV mode running properly.
Good to hear. Can you please confirm what the pricing was from Utilipower for the Aus DLB unit? Thank you
Talk to Josh from ultipower about pricing!
Quick update - Ultipower currently don’t carry stock of the revised DLB, (and weren’t able to tell me when / if they would) Tradezone no longer wish to carry ZJBeny, but Blue Sun Group were quick off the mark and had one shipped pretty much immediately. ($180 delivered) No manual or booklet included however…