Hi
Please help a newbie here... I'm measuring (via SolarAssistant) a huge amount of power drops (via the Inverter input grid voltage). Eskom also feeds my Oven and Geysers directly (not via inverter). I can see the drops on my oven, it'll switch off and then back on again. My prepaid meter stays on... My logical deduction is that there is something wrong on the DB from Eskom feed to oven/geysers/inverter grid feed.... but my installer is trying to tell me that is what Eskom power looks like that now... 😕 ... he also claims that the prepaid meter has a backup battery - again I call BS. 
It was not like that pre-solar/inverter/battery install. 
Any experts have advice, please? 

If it is not normal pre installation, it shouldn't be the new normal. post pics of your DB wiring to and from the inverter and your essentials and non essentials board you can tell by the wiring alone, start with the type of system you are running (inverter and battery)... its hard to advise when you dont know whats what..

Thanks for the insight... I think it's clear that I'm not sure exactly how it's all been wired up. 

I have. deye inverter, 2 5kva soto batteries and 12x 420w panels split as 2 inputs.

I'm about to have my DB redone so that I can fit some geyser timers, to I'll ask the sparkie to assist.

 

15 hours ago, Mielie said:

Hi
Please help a newbie here... I'm measuring (via SolarAssistant) a huge amount of power drops (via the Inverter input grid voltage). Eskom also feeds my Oven and Geysers directly (not via inverter). I can see the drops on my oven, it'll switch off and then back on again. My prepaid meter stays on... My logical deduction is that there is something wrong on the DB from Eskom feed to oven/geysers/inverter grid feed.... but my installer is trying to tell me that is what Eskom power looks like that now... 😕 ... he also claims that the prepaid meter has a backup battery - again I call BS. 
It was not like that pre-solar/inverter/battery install. 
Any experts have advice, please? 

Did this start when the installation was done? If so, then suspect that.

It is true that grid voltage is variable, especially on restoration after a load shed. But "variable" doesn't mean "there or not there". You won't notice it on the backed up circuits because the battery will take over. So it comes back to did you see this behaviour - EG oven turning on and off - before the install?

Also you have a Deye, which has a programmable output for non-backed up circuits. So what if the inverter is disconnecting from mains because it drops to (EG) 180V and so that programmable port is shutting down?

You probably have a floating earth somewhere or it could be a earth - neutral bond... or it could be the inverter pushing back into the grid.. get it sorted ASAP!!

Thank everyone, I'll get someone in to review/sort out

Just final feedback on this. It turn out that my Prepaid meter was faulty.
It's been replaced and problem solved.