Can someone tell me if two of quattros can be used together for 2 phase opperation. I have seen much about three phase but nothing about two phase.
asked
Configure Quattros for 2 phase operation.
Hello, this is my first post.
I have 2 quattros 10kva, and I have 2 phase power on property, Can the 2 quattros be used together one on each phase with common neutral (as three phase would be connected) only two phases with two inverters.
Thanks
@sunshinepower
As in split phase like America?
Or two of three phases to have backup power?
You can have one inverter on each phase running as a separate system.
Two inverters sharing one battery bank is a whole other issue and not supported.
I am in Australia, two phase not split, I have two phases not three. This is how the property is wired up, Two phases with a neutral. I have different appliances running off each of the two phases, 240v on each phase. And yes I also have batteries and they need to be incorporated into the system they are 48v lithium, I have 6 of them, Around 19kwh all together. I thought I had seen in videos with three phase systems with batteries as part of the system.
Is it impossible to have a 2 or 3 phase system sharing the same battery bank?
Do the batteries have to be broken up into two or three separate banks depending on if you are using three inverters for three phase or two inverters for two phase?
Thank you for your help. Greatly appreciated.
Please clarify "Two inverters sharing one battery bank is a whole other issue and not supported."
Victron schematic clearly shows a single battery bank powering two Quattros in split phase:
https://www.victronenergy.com/upload/documents/Split-Phase-Quattro-system-with-Cerbo-GX-Touch-50-Discover-42-48-6650-Smart-solar-MPPT's.pdf
@snoobler
Two inverters configured as a split phase is one system.
I am referring to hanging two inverters up and electrically connected to one bank. That is not one system but two inverters with a shared battery.
This diagram shows a split system, I am wanting a two phase system. Both systems use two inverters but are different. I have not seen anything that comes from victron that shows a two phase system setup.
I think there has mostly been a misunderstanding of the question. I initialy thought you has three phase but wanted to only use two.
So if you only have two phases which are 120° / 240° then it is possible to have two Quattros in a system like this. The two Quattros can be configured as a two phase system with 120° / 240° phase separation.
Both of these Quattros configured as a two phase system MUST share the same battery bank, do not split the battery bank.
Thats good to know, I am glad you can see how I want the set up to be now. However I am not sure what the phase separation is from the grid, I would presume it is 120 / 240, Are there instructions on how to do this?
You need to be sure about this - this detail is very important. Probably talk to an electrician in your area.
What @wkirby is referring to is the angle between the phases. In a three-phase system (where you can e.g. connect huge motors directly) there is a constant phase angle of 120 degree between the phases (e.g. Europe). In an split-phase system, the two phases are separated by an angle of 180 degrees.
This is in the electrical box on the side of house showing the power coming into the house. The top 2 are live connections 100 amps each and the lower neutral connection.
The phase angle detail is most important. Also where does your neutral come from and how is it derived?
You really need to have your electrician physically check and advise you on exactly what system you have.
It would not be good enough for someone on the internet to look at some pictures and give sound advice on something like this.
Can one implement a split phase system with 0 deg phase angle - basically two quattros are in phase with each other but not in parallel. I would like to do this in an offgrid dual redundant system where a device selects AC from one and switches to other if that one fails ,however only having one common battery bank
