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.
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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.
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
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.
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
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.
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.
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 the transformer that supplies my property.
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.
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.
I know it needs to be checked to be sure and it will be, However I thought it might be obvious to people familiar, I am not so familiar but reasoning would suggest that because there is only two main wires going in to create two phases that have a neutral, that it would be a split system center tapped with ground connection which goes to ground down the pole and can be seen with an N on the pole.
Which would mean it would be 180 out of phase, center tapped is the neutral with earth connection. If this is indeed how the system is, as is highly likely how can two victron inverters be set up with this particular system.
I will be getting this checked properly but for now I would like to understand how two victron inverters can be used with this kind of mains connected system.
Thanks
So for a 180° phase angle, two Quattros can be configured as pair.
They will be connected together electrically sharing a neutral and each line phase separate.
The two Quattros will also be linked with a VE.Bus connection for configuration as a split phase system and the VE.Bus communication between the two will ensure synchronisation.
Here is some documentation on how it works: https://www.victronenergy.com/live/ve.bus:manual_parallel_and_three_phase_systems
There are online training sessions in Victron Professional for more insight - links within the documentation as above.
Make sure your installes has experience with installing such Victron systems, they are complex and can be dangerous if done incorrectly.
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
Additional resources still need to be added for this topic
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