Interesting, so in marginal conditions (not panel shading per se) the optimizers did a real shit job.The 8KW and 6.8KW systems have optimizers.
The 8.1KW system does not have optimizers, in this scenario producing 50% more KWH than the other 2 systems.
All 3 systems are Sol-Ark 15k. The optimizers are TIGO.Can you give us more info on the sccs etc used?
In sunny conditions the optimized strings do better?All 3 systems are Sol-Ark 15k. The optimizers are TIGO.
The system w/o optimizers has Sil-Fab 370 watt panels. The other 2 systems have Panasonic 400 watt panels.
Yeah, perform on par with the non-optimized strings.In sunny conditions the optimized strings do better?
So basically they just serve as rapid shutdown modules for code compliance in your case?Yeah, perform on par with the non-optimized strings.
I like the panel level production information. If had to do it again, I'd get the TIGO's that only do monitoring. The optimizers cause false arc faults with the Sol-Ark.So basically they just serve as rapid shutdown modules for code compliance in your case?
Does the solark shutdown the pv charger when it falsely detects an arc fault? Do you have to do manual operation to get it charging again? Or just a warning and continues working?I like the panel level production information. If had to do it again, I'd get the TIGO's that only do monitoring. The optimizers cause false arc faults with the Sol-Ark.
Yes, Sol-Ark shuts off PV production until reset. I can reset through MySolArk App, but since this new App was introduced last June, I don't get a notification and I'm not aware that I've lost production. So, I operate with arc fault turned off.Does the solark shutdown the pv charger when it falsely detects an arc fault? Do you have to do manual operation to get it charging again? Or just a warning and continues working?
This seems much more likely that the optimizers causing the slightly lower efficiency. Optimizers are meant to help a panel with shading keep up with the rest of the string. If everything has crappy sun exposure, an optimizer isn't meant to address that.I guess the other possibility is the silfabs just do better in overcast conditions versus the Panasonics?
You can't get just monitoring anymore as NH uses NEC 2020, meaning panel-level rapid shutdown is required.I like the panel level production information. If had to do it again, I'd get the TIGO's that only do monitoring. The optimizers cause false arc faults with the Sol-Ark.
I described that wrong. It's monitoring + RSD, no optimizing.You can't get just monitoring anymore as NH uses NEC 2020, meaning panel-level rapid shutdown is required.
But at this point I'm suspicious of TIGO and would like to know of better quality MLPE? I'm on friggin' NEC 2023 and need panel rapid shutdown, and want monitoring which does not require somebody's specious 'cloud'.
(NEP) was founded in the United States. It has its R&D facilities in San Jose, California, the heart of Silicon Valley.Anyone used Northern Electric?