1) RTFM
2) Go through the configuration choices of Growatt. (i.e. read the setup data.)
I have read all that I can find ... but none of it mentions the parameters that I saw online while connected to the history of the actual inverter I bought. That's where I saw the 253V maximum figure. Wish I'd at least screenshot all the settings.
Frustratingly I can no longer even find the option on the site to view that again!!!
"Firmware" &!@#$!
That's something you mostly avoid with your Warpverter implementation.
Haha, yep. I don't disagree with Warpspeed's decision to avoid that altogether.
Anyway, I did wind up the voltage to 255V four seperate times and I learned a few things.
1) When it reaches 253 - 255V the Growatt does
not shut down
2) It does appear to throttle back
eg. It was outputting 4,400 watts and I wound Warpverter volts up to 248V ... and the Growatt dropped back to 3,900w
At 253V it dropped back to 3,400w
At 255V dropped to 2,900w
So wound back to 240V and Growatt up to 3,700 ... and over a couple minutes 4,240
(watching the other charge controller outputs it seemed consistant all the way through during my testing)
I've mentioned before about the extra noise the Warpverter makes if an electric blanket is running ... or any time the Growatt is running while connected ...
... well on my fourth test, I switched off all the other DC charge controllers so the Warpverter was running off the battery ... and the Growatt was running at full power ... 5,000w. The AC was at 244V which happens if the Warpverter is back feeding a fair bit.
Adjusting the voltage seemed more responsive ... didn't take as long to change and settle ... and after 30s I had it at 250V and the Growatt was down to 4,500w.
As I wound it around the 252-253 mark it suddenly went a lot quieter which was a surprise and the Growatt was down to 3,600w
I did take it to 255 but the phone ran out of memory so I don't remember what the final output was. Not much lower I don't think.
So I did learn something ... just need to process it all.
I do know I'll be in the city tomorrow, so I might just shut off the Growatt to prevent potential overcharging ... and leave the Warpverter ticking along like it used to. The charge controllers seem to run fine and prevent any overcharging.
Warpverter is absolutely guaranteed to be totally software free.
Haha, thought you may say that.
It should be possible to buy a directional AC power meter ? Don't know never really looked into that.
Had never even thought of that. I do know it would provide a lot more help if I could see which way the power was going ... and the actual amount too. There's a few options on aliexpress ... I shall research some more.