W@P's Solar System

Steijn1 said:
Hi, I need help please.
We have a general area power failure and cloud so I am on battery now.

Wanted to run the generator to charge the battery full for tonight but something is not working.

My manual change over switch is installed before the inverter and the CT coil is between the change over and the first earth leakage.

Generator is running, swith changed to generator. My Sunsynk 8kw sees the AC and reports every normal but it will not take any of that power to charge the battery.

I checked the timer settings and it is currently set to charge the battery to 100% with grid ticked.

Any ideas?
Click to expand...
You say that it is not charging batteries, but is it servicing essential loads?
Also how long did you run it for? It will take some time before it stabilises.
 
RonSwanson said:
You say that it is not charging batteries, but is it servicing essential loads?
Also how long did you run it for? It will take some time before it stabilises.
Click to expand...
The inverter shows that AC is present but it is taking no power from the gen. It was running for about 20 minutes without anything happening.
 
Only pic I have now is this one.
Which other settings should I look at?
0a66ca8609cd8da614a27faa2a53b6eb.jpg
 
AchmatK said:
I'm assuming the generator is off now as the AC light is not on.
Click to expand...
Correct.
The pic was taken last night after I switched the generator off again.
I am at the office at the moment so can't take any other pics.
Thank you very much
 
My sincere apologies for hijacking this thread.

I am adding some pics
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When the AC failed, the inverter went onto battery. All good.
I decided to charge the battery with the gen and used the changeover switch.
The inverter showed AC but would not take any power.

I then upped the maximum HZ a little and the Sunsynk was happy but only for a few minutes. Then it would try to connect to the gen again, just to disconnect a minute or so later.

I then connected the gen directly to the AUX port.
The inverter was happy and charged the battery for about 40 minutes and then disconnected and refused to accept the gen again.
 
What is the kW / kVA rating of your genny?
Have you checked that it does work normally (when you have a load plugged in directly?
Very interesting that you got it to work on the Aux, but not on the main grid feed. I also see that you played with the load-shaving, this is important with a genny that is lower than the inverter's load. Also, broadening the voltage and frequency parameters of the genny input, it is what I would have done.
 
RonSwanson said:
What is the kW / kVA rating of your genny?
Have you checked that it does work normally (when you have a load plugged in directly?
Very interesting that you got it to work on the Aux, but not on the main grid feed. I also see that you played with the load-shaving, this is important with a genny that is lower than the inverter's load. Also, broadening the voltage and frequency parameters of the genny input, it is what I would have done.
Click to expand...
Generator rated at 5.5kw so I shaved it to 4.5kw.
The load at the time was below 3kw.
I tested the gen separately and it works perfectly.

What about the battery charge amps?
It is 50A on BATT TYPE screen and 50A on the BATT CHARGE screen.
 
50A at 48V is 2400 Watts, so coupled with a load of "under 3kW" is probably maxxing it out. Try reducing it to 15A, and then stepping it up little by little?
 
Fscking sad graph this.

1648462853078.png

Booked the inverter in at Sunsynk JHB on 10 Mar 22 to see what the problem is. 18 MTF days now without feedback. I did enquire this morning.
 
You did mention it looked like they had a large number of repairs to make - wonder what could be taking so long. Hope you get it back soon mate
 
Yes, there were a lot of inverters on the workshop floor. Hoping that they are just busy and have not yet gotten to mine. An update from their side would have been nice.
 
W@P said:
Yes, there were a lot of inverters on the workshop floor. Hoping that they are just busy and have not yet gotten to mine. An update from their side would have been nice.
Click to expand...
Victims of SunSynk's popularity Or lack of spare components ?
 
rrh said:
Victims of SunSynk's popularity Or lack of spare components ?
Click to expand...
Who knows. Must mention it was a mix of Sunsynk and Deye inverters that i saw.
 
I must say that Covid and the Russia conflict has wreaked havoc on lead-times and availability of spare parts in our industry. It is quite possible that the same applies to Sunsynk.
No excuse for not communicating with the customer.
 
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