I have 3 x Multiplus II in parallel (15Kva) with 2 x Fronius Primo 8.2Kw and a RS450/200
The customer has reported lights flickering at random times. I have also been there an seen it happen. It happens at night also when no frequency shifting is happening, early morning and during the day also. I have attached a video of an almost “hunting” like response in the voltages etc any ideas? Hopefully my video uploaded. You can see the lights flickering /pulsing in the reflection.
Are you sure cabling is ok? Equal lenghts not too thick or thin…
Parallel can be troublesome to run smoothly
I would try some other LED-Lights as well.
I have 3 LED Lamps in the house, showing the same. They already did with the Fronius hybrid, and did with only the Fronius symo parallel on grid… (Just without any Inverter, they are fine)
Every other LED-Light never had any issues, no matter which inverter.
When a frequency shift offcurs, the 3 mentioned Lamps are entering disco-mode, while every other just starts to flicker “a bit”.
So, I assume that these are just “hyper- sensitive” towards tiny frequency-shifts for whatever reason.
The company that made it (that I used to work for) have made plenty of these and we have never had an issue. Besides with a genset connected. The reason for not going back to them is I’d like to work it out on my own accord and they seemed to like to blame other parts which I don’t think the issue is.
I think the design should be in check but I would have to look over it to make sure. But I wouldn’t think a voltage drop on the DC side would cause flickering but instead throw a low voltage alarm?
The battery’s are contained in the same cabinet and are semi managed meaning the data is taken from the batteries but not used for control (self managed battery set up)
The customer also had a fault LED Highbay which we replaced for a new and different brand which also flickered like the others
This is happening in the customers shed and house. He had a faulty LED Highbay which got replaced while we were there for a reputable brand which also flickered. The customer also used to have an existing system with Victron which we replaced which didn’t have this issue.
The original system was programmed to three phase with a fronius Symo and 2 x 150/60 but we have since changed to single phase to resolve overloading issues
@guystewart any thoughts?