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How best to check the mc4 connecters? Take the screw cap off and check the resistance? Infra-red gun?

Certainly puts the fear of god into you when you read something like this. Thankfully he and his family are safe but almost certainly a life changing event. I read about an electronic engineer who had setup lifepo4 batteries from china in germany and house also destroyed but from an explosion...

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@shavermcspud These are not technical installation diagrams by any means and are to just demonstrate where the different systems sit to help frame my question for the forum; which was to ascertain why the vendor said it would damage the inverters which I didn't feel was explained clearly. I've...

On the advice of the vendor I wont be pursuing it in any case and will stick to my "off-grid" design. Thanks all.

Just to clarify I have an off grid inverter with the ac input connected to the grid for backup. I have 10 spare panels and rather than add them to the off grid inverter system I had the idea to disconnect the ac input of the off grid inverter. Then I would install a grid tie inverter connected...

What I have now is considered off grid design but with grid backup as below. Effectively my proposed plan is to move the ac input from a direct connection to the meter to a breaker in the grid tie panel.

Thats what I thought, from my understanding the off grid would be just another circuit in the grid tie breaker panel.

I have 20 panels in an off grid setup ie acinput from the grid, ac output to the breaker unit/consumer unit which feeds the load as well as 8k of panels and 30kwh of batteries. Being in nothern europe sun is scarce from nov - feb but the spring/summer months I get more solar than I need so I...

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I'm re-opening this as I think these have to be phantom readings. I have 3 parallel inverters with a 40A breaker in each. To reach 58k at 230V would require an output current of 252A which is 84A each. As this was 8pm it is dark outside so little to no solar which means it could only come from...

In depth technical discussion of different inverter bios with flowcharts. eg What causes the system to move between hybrid, solar/battery etc and what each of the settings do and how they impact operation.

Thanks Mike, that does make sense.

I've got 3 EASUN 5.6kw in parallel in an off grid config with grid backup. I only noticed later in the afternoon but there was a massive momentary grid spike logged by solar assistant at approx 4.45 am. In addition some other readings were off the scale such as inverter temp of 300C. Other than...

Just to inform, after discussing with the vendor they capitulated and sent me the firmware and instructions. All inverters upgraded to the latest version and all now function as normal giving me a nice 16.8kw total. No changes to the cabling was required.

If you dont plan to export you could have just taken the tails from the main cu into 2 henley blocks. Take 1st set of LN from the henley blocks into the grid poles of changover switch. Take the other set into the ac input of the inverter then from the output into the "generator" poles of the...

If that was the case wouldnt it show up when I switched the battery cables from the new inverter with one of the others? No matter which of the 3 sets of cables I use in the 2 inverters that work in parallel the voltage reading on the display is the same whereas the new inverter always has a...

The voltage at the battery input terminals was identical for all 3 on my multi-meter. The inverter itself is reading a difference of 0.1 volt compared to the other inverters. I have a spare set of 2m cables, Ill give it a try.

I found this in my axpert manual.

THanks, no matter what the slave(s) go straight to fault mode error 83 which is different battery voltage detected in the manual. I noticed the battery voltage reading on the screen for the new inverter is out by .1V so Im thinking not calibrated correctly at the factory. Have a battle now with...

Thanks, im not so sure its the firmware now as Im seeing different battery voltage readings detected between the new inverter and the 2 that work fine. Although only 0.1V difference its clear from the readings on the inverters they are different so possibly it was mis-calibrated at the factory...

When the ac input breaker connected to all 3 they do power on at exactly the same time in standby mode and the slaves that work flag error 83 which, according to the manual, means different voltage detected. I tried again today and inv1 shows 53V, inv2 53.1 and inv3 53.1 so I'm wondering if the...

I must be dumb as a box of rocks as I've been unable to source the firmware I need and how to do it. Would appreciate any pointers.

Probably but the vendor support is extremely poor and am having difficulty getting any helpful response so for those in the UK I would suggest avoiding EASUN if you plan to run parallel inverters.

HEllo, I have two Axpert 5.6kw inverters setup in parallel, running for months now without issue. I added a third today, configured cables and menuitem 28 to PAL as per manual, and it goes straight to battery voltage fault error 83. From left to right: Inverter 1: Firmware 05606 (New...

Hope someone can help. I'm struggling to get my head around nodered as , at least to me, its very unintuitive. Of course it may very well be that I'm a bit thick but in any event could someone please give me an example graphical flow and the node properties to do the following. Flow 1: Do...

I have EASun inverters and it shows wiring and configuration for 3 phase at the end of the manual as it does for single phase. I used the instructions to wire and configure single phase parallel. Program 28 to set the phase.

I have two 5.6kw easun (IGrid SV-IV-5.6KW) inverters configured in parallel. On occasion solar assistant 'forgets' the slave unit and thus does not record the data for it such as solar kwh for the day whilst the inverters themselves continue to operate as normal. To have solar assistant...

I'm working through similar issues after I added another inverter in parallel. I switch between solar/utility/battery and solar/battery/utility. In any event when I switch to solar/utility/battery it will charge for approx an hour then switch back. Also it takes forever to read/write to mqtt on...

I manually switched off/on the ac input breaker during cheap rate elec for my 11kw inverter for around 6 months before it blew some caps which , according to my vendor, was due to inrush current when switching the breaker on without first switching the inverter off as part of the normal system...

As others, I recommend you get solarassistant and a usb to rs232 cable. The cable runs from the solarassistant unit to the pytes console and will provide comprehensive metrics for the battery array. Also with solarassistant it provides an MQTT server which you can use to integrate with other...

I forgot to add, if you have a raspberry pi lying around you can order up the image and download it today to install for $55. https://solar-assistant.io/shop/products/software You then just need a usb to rs232 cable from amazon...

I decided to disable my automation entirely and try the ac charging timer controls. I set the start to 00:00 and end to 04:00 and the inverter time to current minus 30 minutes. So when the inverter time hits 00:00 the actual time will be 00:30 which is when cheap rate begins and similarly for...

Thanks always helps to bounce ideas around. No SOC management set and back to battery voltage is 57 so itll never trigger and same with to grid at 47. The spikes started when I setup parallel comms so I would surmise it is firmware differences between the two inverters.

I recall reading somewhere that mpp/conversol use 1A no load. So 48W for 48V , 24W for 24V.