HannesZ

Contacor is there. It shorts the neutrals and the earth from the input to the outputs. Also tested it with multimeter and there is dead short when grid is off between the neutral and the earth wires on the output of the inverter as well to the earth spike

Hi. I have a dual Sunsynk 5.5KW system and I'm fedup with adding batteries. I want to use all of my battery capacity for solar storage. So for those long dark winter days the 8kw/10kVA Dual fuel generators are starting to look very attractive. https://leroymerlin.co.za/dual-fuel-generator-8kw-10kva-petrol-or-lp-gas-81477626?sfdr_ptcid=32806_617_692178575&sfdr_hash=98d60cdd38244fdbda90f8920554a846 Is there anything I need to be aware of before installing one of these generator with my system? Other than cray high cost of fuel that is. Kind regards Hannes

Yes. I know the inverter has it built in. So that should be sufficient? they are stating "reverse power blocking to be installed" on the application

I have a 63A single phase grid connection and I was informed I need to install a reverse power flow blocking device if I want to connect my hybrid systems(Sunsynk) to the municipality grid. Googling is not helping me so anyone here know of a device that would work?

I have a relay that kicks in when the grid fails. It connects the grid neutral to the output of the inventor neutral. It is there to prevent islanding as the earth spike and the neutrals aren't connected when the grid has failed. is there another way to wire the system so that earth for the essential loads still functions but I don't have throbbing lights? Good suggestions. will try. Can't believe I am holding thumps for loadshedding

Once loadsheding kick in it starts to flicker slightly. It's not something you notice until you do

I got a oscilloscope her but for some reason I can't get the FFT to work. Time to read the manual

My fluke shows 230.9v where the lights are connected in the house DB. 50hz. I did not manage to bring the scope. Will get that next.

its on all lights. even the dimmable LEDs, incandescent and florescent lights.

Its always possible to be bad wiring but it makes no sense that it can be bad wiring as there is no flicker when the inviter switch to line mode. The wiring does not change. Im running 55mm DC wires from the batteries to the inviters. If I measure there is no notable voltage drop but the flicker is there regardless of load when the grid fails.

all the lights in the house flicker when running from battery with a Sunsynk 5.5KW inverter. Is there something that can be done to smooth out the output? will an AC filter inline to the lights help?

This discussion was help full. Can anyone please suggest a Relay that I can use to connect the output of the inverters N to the earth when in Island mode as per https://www.sunsynk.org/post/automatic-neutral-earth-bond I have found this https://www.acdc.co.za/pages/product-individual?JQX-50F 40VDC but as I have two 5.5K in parallel I would prefer a 63A 230VAC relay due to al the CB's being 63A to protect the wires. Preferably one that does not cost the sacrifice of my first born son. I have grown fond of this one....

I don't have a problem with the 3.68kw limit but the way thay apply it makes no sens. Why limit the amount of panels at all. Very few instalation are prefect so limiting it to 10 370w panels makes no sens. Expecially if the inverter can throttle it self on the AC side to 3.68kw.

That is 97. Apparently there is a NRS 098 2-1 https://www.dailymaverick.co.za/article/2021-07-19-outdated-thinking-and-reactionary-rules-hold-back-electricity-supply-in-south-africa/

Anyone?

Googling is not helping me. I want to read the NRS 098 2-1 to understand why the DC side of a solar installation is limited. I am sure that my local municipality is misinterpreting the 25% limit on the 60A line shared phase and applying it to the total theoretical limit of then installed solar array. My Inverters can throttle it self to 3.68Kw on the AC side so what is the point in limiting my DC side.

Do one need an anti islanding relay if the inverter is in front of the earth relays? Why can it just be hard wired to connect the earth of the input to the output? In my case both the house main db and the essential load db has earth leakages protection. But at my inverter the essential outputs earth and neutral are connected. there is no bridge between the earth of the output and the input earth which makes me worried that the earth spike is not going to provide an alternative path for the earth leakage when the grid is off.

Man. I would buy everything at 2012 prices

I have a fireman switch that can isolated the inverter. The over current protection is done with the dubble pole cb but I can't see the reason for it being dubble pole.

My dB is running out of space. Hence the question. Is bubble pole cb before hybrid single phase inverter mandatory? Will a single pole be sufficient?

not if there is a load and I have 5.5kwh load 24/7

awsome! no to make this work.

aa ok so kind of yes.

ok. but is there away(via AIP) to change the setting on the inverter?

Other than Solarman smart, is there away to connect connect to the sunsynk-5k-sg unit remotely to configure or even download past data? The manual makes no reference to a webportal of any sort. It has a wifi dataloger.