Hi All, I want to link to inverters together, can someone give me some advise to how to connect the  2 Inverters the correct way, please. Thanks

Kodak off Grid Inverter OGS 5.6

48 minutes ago, Swannie said:

Hi All, I want to link to inverters together, can someone give me some advise to how to connect the  2 Inverters the correct way, please. Thanks

Kodak off Grid Inverter OGS 5.6

Have you read through the manual for these inverters?

1 hour ago, Swannie said:

Kodak off Grid Inverter OGS 5.6

Ports 8 and 9 should be connected between the inverters. Both inverters will share AC inputs and one battery bank (coms to battery if lithium should only go to master inverter only). Settings unfortunately  cannot assist coz I am not fimiliar but what i can say is one must be master and the other slave.

Hope this helps

 

Edited August 11, 20224 yr by Quwatush Shams (Suly)

12 hours ago, Scorp007 said:

Have you read through the manual for these inverters?

Hi Scorp007, I did, but don't understand what they mean. Do you have to link the inputs and outputs together with the other Inverter, and do you have to sync the 2 Inverters. Thanks

12 hours ago, Quwatush Shams (Suly) said:

Ports 8 and 9 should be connected between the inverters. Both inverters will share AC inputs and one battery bank (coms to battery if lithium should only go to master inverter only). Settings unfortunately  cannot assist coz I am not fimiliar but what i can say is one must be master and the other slave.

Hope this helps

 

Hi Suly, Ok thanks, but what about the output voltage?

13 minutes ago, Swannie said:

but what about the output voltage?

I'm guessing the same pic below is according to axpert/voltronic inverter

 

Edited August 12, 20224 yr by Quwatush Shams (Suly)

Hi Suly, Thanks, It looks like it. The only difference is that I use Lithium Batteries

4 hours ago, Swannie said:

The only difference is that I use Lithium Batteries

Doesn't make a difference. The same connection diagram applies.

To settings: Inverters switched off but battery connected go to setting 28 and set to PAL on each of them. Then with output AC connected switch them on simultaneously. They will select master and slave themselves arbitrarily. Then you can switch on input AC.

Thanks Beat, so I have to connect both AC,s of inverters together as-well as outputs, and what about the batteries?

Sorry Beat, I see that you answered my question. Thanks

Morning All, I didn't link the 2 Inverters yet, had to wait for my other Inverter that was in for repairs. What I picked up here is that the diagram doesn't show anything about the PV side. Thanks

 

@Swannie I would wire the batteries slightly differently from the diagram to avoid the 2 inverters getting a different voltage reading due to voltage drop over different cable lengths. Either make sure the cables are the same length from the split to each inverter or I would rather connect each inverter directly to the battery terminals, each with their own cables and disco. You could also run the batteries to a busbar and take equal cable lengths from there to each inverter. Just don't run the battery into one inverter and then daisy chain wires to the second inverter from that port, I've seen an install like that on the forum and it didn't work.

Thanks Jumper I think Ill rather run the batteries to a busbar and then to each inverter. What about the PV side? Thanks

 

On 2022/08/12 at 3:06 AM, Swannie said:

Kodak off Grid Inverter OGS 5.6

There is a known issue with these acting strangely when paralleled; see this post:

It seems unlikely, but it may be related to your battery not lasting issue.

 

Edited September 27, 20223 yr by Coulomb

3 hours ago, Swannie said:

What about the PV side?

I'm not 100% sure as I've not actually run parallel machines, but I think you can use the mppts independently with different arrays on each. Not sure if both inverters need pv or not. The person to likely know best would be @Steve87

Hi guys, the PV can be split into whatever ratio of panels. One can even have whilst the other doesn't.

2 hours ago, jumper said:

I think you can use the mppts independently with different arrays on each.

You MUST use independent arrays; you can't share a set of panels with more than one inverter. I'm not sure that's what you were trying to say, but I thought I'd make that clear for all readers.

The above is for Axperts and similar; there may be some brands that allow sharing of panels but I doubt it.

11 minutes ago, Coulomb said:

You MUST use independent arrays; you can't share a set of panels with more than one inverter. I'm not sure that's what you were trying to say, but I thought I'd make that clear for all readers.

Thanks for clearing that up @Coulomb, I was meaning they could have different specs, no. of panels, orientation etc. as opposed to needing the same panel setup on each, but I see the possible confusion now as I wasn't very specific 👍

Thank you ALL, appreciate the advise.

 

Hallo All,thanks for all your help and advise, Inverter working well now