I have two of the inverters shown in below pictures. Can they be connected in parallel?

 

 

 

I have two of the inverters shown in below pictures. Can they be connected in parallel?

 

 

No not the OG5.48, only the OG5. 48a . The first one is equivalent to Axpert VM3, the second one to Axpert MKS3. 

Figured as much, thank you. So I'll need to sell these and get something else. 

 

Figured as much, thank you. So I'll need to sell these and get something else. 

@Pieter v D Not necessarily, do you have any load which consumes more than the 5Kw the inverter can provide?

Yes, looking to put the entire house on inverters/solar. So will need min 10 kW. 

 

Yes, looking to put the entire house on inverters/solar. So will need min 10 kW. 

If there is no single load exceeding 5Kw then you can split the loads between the inverters e.g. the kitchen and the plugs of the kitchen on one inverter and all the other lights and plugs on the other inverter, if there is enough roof space and you have an electric geyser have a look at a evacuated tube solar geyser and the outlet of the solar geyser goes to the inlet of the electric geyser that way the electric geyser will not use as much energy when you are running on batteries. Change the stove and oven to gas then you also save.

We have quite a big household with two geysers, lots of workshop tooks, swimming pool pump and not a fan of gas cooking so the electric SMEG will stay. The stove/oven is the biggest single load, but we regularly go over 5 kW even without the stove. Going to a bigger inverter setup is going to be much cheaper and also less labour than changing all the individual devices. 

Ok, do you have any inverters in mind that can parallel?

 

We have quite a big household with two geysers, lots of workshop tooks, swimming pool pump and not a fan of gas cooking so the electric SMEG will stay. The stove/oven is the biggest single load, but we regularly go over 5 kW even without the stove. Going to a bigger inverter setup is going to be much cheaper and also less labour than changing all the individual devices. 

Then maybe sell the OG5.48  and buy a single OG7.2  , or if absolutely must a OG10 . The OG7.2 is very robust , I have one myself . I  refer to it as the the LandRover Defender of inverters , without the oil leaks though.

I am not particularly in favor of parrelling of machines . The mean time between failure is at best half of a single unit  due to the double amount of  electronic semiconductor devices. Remember these units does not introduce dual redundancy due to the fact that they share  the loads. Then on top of that there is the additional functionality of synchronisation and arbitration , functions that can fail and cause damge to both machines.

Edited September 30, 20232 yr by BritishRacingGreen

 

Then maybe sell the OG5.48  and buy a single OG7.2  , or if absolutely must a OG10 . The OG7.2 is very robust , I have one myself . I  refer to it as the the LandRover Defender of inverters , without the oil leaks though.

I am not particularly in favor of parrelling of machines . The mean time between failure is at best half of a single unit  due to the double amount of  electronic semiconductor devices. Remember these units does not introduce dual redundancy due to the fact that they share  the loads. Then on top of that there is the additional functionality of synchronisation and arbitration , functions that can fail and cause damge to both machines.

Good to get the info out of the horses mouth from a repair point of view. 

 

Ok, do you have any inverters in mind that can parallel?

Considering the OG 7. 2 as mentioned above. 

Ok, have upgraded to a Kodak 7.2. Running everything bar the stove off the inverter.  Have the geysers and swimming pool pump running on wifi switches so they do not switch on at the same time. 

The BMS cable I used for the OG5.48 to Kodak BL3.6 battery does not work anymore, I get error 61. Anyone have the pinouts for Kodak 7.2 to BL3.6 bms cable?  

13 hours ago, Pieter v D said:

Ok, have upgraded to a Kodak 7.2. Running everything bar the stove off the inverter.  Have the geysers and swimming pool pump running on wifi switches so they do not switch on at the same time. 

The BMS cable I used for the OG5.48 to Kodak BL3.6 battery does not work anymore, I get error 61. Anyone have the pinouts for Kodak 7.2 to BL3.6 bms cable?  

Can you not just check on your existing cable as it has been working well up to now? 

10 hours ago, Scorp007 said:

Can you not just check on your existing cable as it has been working well up to now? 

Will do, but suspect the problem is that I now need a different config cable. 

The communications cable pin-out should be the same as the Greenrich LiFePO4 to the inverter which are Pin 3: RS485B and Pin 5: RS485A on the inverter side and Pin 7: RS485A and Pin 8: RS485B on the battery side.

I found the info here and it works for me with the Greenrich battery to the Kodak 7.2 Kw inverter, the Greenrich 3.686 KWh looks exactly the same as the Kodak 3.6 battery so I think they are manufactured by the same factory and looks exactly the same inside.

 

On 2023/09/30 at 10:15 PM, BritishRacingGreen said:

Then maybe sell the OG5.48  and buy a single OG7.2  , or if absolutely must a OG10 . The OG7.2 is very robust , I have one myself . I  refer to it as the the LandRover Defender of inverters , without the oil leaks though.

I am not particularly in favor of parrelling of machines . The mean time between failure is at best half of a single unit  due to the double amount of  electronic semiconductor devices. Remember these units does not introduce dual redundancy due to the fact that they share  the loads. Then on top of that there is the additional functionality of synchronisation and arbitration , functions that can fail and cause damge to both machines.

Since you mention your reluctance to parallel, I would appreciate your input: I have two Kodak OG-Plus 5.48, and two Hubble AM2 batteries. My domestic load is less than 5kw. I am about to attempt to switch the inverters on in parallel mode, but I would much prefer to leave the load on one inverter only, and use the other inverter simply to deal with half of the PV input, and to have both inverters charging the batteries. Is it possible to do this?