Off-Grid system with APsystems microinverters and Pylontech US2000 batteries!

DIY
, , ,
1

Hello everyone,

I am building an Off-Grid system using the Victron Energy Multiplus II inverter (or another suitable Victron inverter), APsystems microinverters, and Pylontech US2000 batteries. Could I get assistance with the correct wiring diagram to connect all of these components?

Here is a description of my system:
• Inverter: Victron Energy Multiplus II (or another Victron inverter, if this is more suitable for Off-Grid operation).
• Microinverters: APsystems (they will be connected to the solar panels).
• Batteries: Pylontech US2000.

Questions:
1. How do I properly connect the APsystems microinverters and Pylontech US2000 batteries to the Victron inverter? Do I need additional components or controllers?
2. How can I ensure efficient interaction between the solar panels, microinverters, and batteries for full Off-Grid operation?
3. Are there any additional recommendations for configuration to ensure maximum efficiency and safety of the system?

I would appreciate any advice, wiring diagrams, or examples of existing solutions.

Thank you in advance for your help!

2

Reading this, i think you need a trained professional. it is not as simple as putting a battery in a flashlight, far from… it’s dangerous and could possibly end up in hospital or worse.

There are free training courses available on victron professional professional.victronenergy.com/

Search on the forum for apsystems+victron …

1 Like
3

I know that it’s not as easy, but it’s not as hard as we think either. Thank you.

4

Start by reading the manuals of all the equipment you want to use, and best is to get advice / help from a local official victron dealer

System design is not allowed on the community, read the guidelines please

1 Like
5

As already said you need to find a trained professional to assist you, the only comment I would make is on the Inverter, a better choice if you are off-grid (and don’t plan to get grid connected) is the Inverter RS Smart is a powerful 48 VDC, 6 kVA 230 VAC inverter. (I have two paralleled for redundancy and if one fails the other keeps suppling power)
Inverter RS Smart - Victron Energy

1 Like
6

apsystems-yc500-victron-multiplus-2018-wp.pdf (835.4 KB)
It should be easy enough if you are technical. The only rule will be the 1:1 for AC coupled systems excluding any local codes.

1 Like
7

Hi Emin.
I’m an offgridder. And frankly, wouldn’t touch microinverters with a bargepole. Even if compatible, those likely need to be ‘frequency fiddled’ to control them. So you’re instantly building in poor frequency stability to your system. With no grid, even a generator can also add a frequency issue, but that’s usually manageable alone.
The Victron website is a good place to start for wiring diagrams, etc. A lot of general info too. The Pylontech setup… Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, UF5000, Pelio-L, UP5000, Phantom-S, Force-L1 & L2 [Victron Energy]

Add a GX device for all the control and monitoring thrills. And a Victron mppt or 3. Flick the micros, those are designed to be slaves to a grid.

1 Like
8

Will it not work without the generator?

9

You dont need a generator. Setting the multiplus to work with PV inverters is easy but you will need a PV monitor like an ET112 to get solar production.

1 Like