Hello. My solar system output roughly 280-290 volts. I realized that I can’t use regular MPPT controller(SmartSolar MPPT 150/45) that is sold on Amazon by Victron, they only support 150 volts maximum. Is there any other unit I could use for this system? Thank you a lot.
Any MPPT/inverter from the RS range of products.
Hey, Alex. Do they come two in one, or do you have to purchase them seperately? Thanks.
Run your panel spec through here it will suggest something.
Alex was referring to the MPPT RS and the Multi RS
Try looking here https://www.victronenergy.com/
1 Like
Why not use a Y type MC4 and split them in series, it will halve your voltage. However, it will double your AMPs. But for solar chargers it is almost always required to use Y connectors to reach that voltage/amps sweetspot.
If you are unsure, send me the panel specs and how many you’ve got and will tell you exactly how to wire them.
Hi. I did so, and it recommended me a high voltage unit. I am wondering if “Victron Multiplus 2000VA 24V 50-30 inverter” would be a good choice for me? it is pricey.
Hey, I have 8x 440w Canadian solar panels, I don’t really want to start splitting my solar panels, as I am not sure how would this affect the overall charging of my lithium battery. I assume it would slow the charging down. But I could be wrong here. My solar panels are all wired in series. I am currently exploring my options for an all-in-one inverter and controller that would do everything. I looked up “Victron Multiplus 2000VA”, but I am not sure if this would be sufficient? Thank you, Dansz.
A single solar panel that I have produces: Max power voltage of 32.4V.
An inverter and an mppt are two different things.
How did an mppt calculator recommend an inverter only model?
What battery voltage do you have? This affects your mppt choice as well as the panel configuration. If it is not a 48v battery then the mppt rs and multi rs are not an option
What wattage are your loads (this affects inverter size)
Ok, then the solution is simple. Buy a pair of MC4 Y connectors and hook them up as 4 in series and then using the Y connector put the two pairs of 4 in parrallel.
We sell hundreds of black frame 440w panels like yours and fit them regurlarly on Victron MPPTs. It doesn’t affect charging in any way because Power (watts) is Volts * Amps. The total output will be the same.
Reason why people prefer higher voltages is because on large systems the solar cable requirement is far less. Also the higher the voltage the longer the cable can be. I’m sure your panels aren’t 200m away, so you can stop worrying and set them up this way. If you run this through the Victron MPPT calculator it will give you same answer I am sure.
1 Like
Then you have 2 choices for your high voltage (>280V) solar string:
- If you want to also be backed-up and connected to a grid: Multi RS Solar.
- If you want to be only off-grid: Inverter RS Solar.
First choice is future proof and also can be used only off-grid.
Not to mention that it has 2 MPPTs.
3 Likes