All things Sunsynk (Deye, Inge, etc...)

After swapping the strings I can confirm that it's definitely not an issue with the inverter.

Next step is to test each panel on the string that is causing this issue.

I'll disconnect one panel at a time to isolate which one might be causing this.

It's not going to work testing each panel with a multimeter as this is not a permanent issue and gradual increase in voltage and drop in amps so testing the panels with a multimeter might not indicate anything abnormal at the time of testing. 1959765631.jpg1560521826.jpg211490518.jpg2037464220.jpg
 
AchmatK said:
After swapping the strings I can confirm that it's definitely not an issue with the inverter.

Next step is to test each panel on the string that is causing this issue.

I'll disconnect one panel at a time to isolate which one might be causing this.

It's not going to work testing each panel with a multimeter as this is not a permanent issue and gradual increase in voltage and drop in amps so testing the panels with a multimeter might not indicate anything abnormal at the time of testing. View attachment 1451167View attachment 1451169View attachment 1451171View attachment 1451173
Click to expand...
Eish... At least you've eliminated the inverter as the issue.
 
Speedster said:
Eish... At least you've eliminated the inverter as the issue.
Click to expand...
12 panels on this string to go through.

This is the spec of these panels and with a VMP of 32.9v @ STC it should get to a max of 395V.

Looking at the string that is working properly I am getting 28.64v during the middle of the day. Using this figure for the other string I should be getting 343v which is what I get until the abnormal behaviour occurs before it rapidly increases to 353v. Its not a significant increase but the amps decreasing is what results in the lower production.

Amps will match the lowest panel amp output on a string so I'm thinking that one of the panels is dropping amps resulting in the entire string settling at the panel with the lowest amp.
 
AchmatK said:
12 panels on this string to go through.

This is the spec of these panels and with a VMP of 32.9v @ STC it should get to a max of 395V.

Looking at the string that is working properly I am getting 28.64v during the middle of the day. Using this figure for the other string I should be getting 343v which is what I get until the abnormal behaviour occurs before it rapidly increases to 353v. Its not a significant increase but the amps decreasing is what results in the lower production.

Amps will match the lowest panel amp output on a string so I'm thinking that one of the panels is dropping amps resulting in the entire string settling at the panel with the lowest amp.
Click to expand...
Rather than going through the panels one by one, you can consider bypassing half the panels. Once you know which half of the panels has the error, you can then bypass half of that half and in this way you should identify the problem within 3 days.
 
Speedster said:
Rather than going through the panels one by one, you can consider bypassing half the panels. Once you know which half of the panels has the error, you can then bypass half of that half and in this way you should identify the problem within 3 days.
Click to expand...
Will try that but I think the lowest number of panels needed to start the MPPT is 4 or 5. I think it needs to get to 125v to start from what I recall.
 
AchmatK said:
Will try that but I think the lowest number of panels needed to start the MPPT is 4 or 5. I think it needs to get to 125v to start from what I recall.
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Yes sorry, I wasn't clear. When you split the panels into two groups and connect only 6, either the error will have been resolved or will persist. If it persists, you switch to the other 6 panels. Once you've identified the 6 working panels you add the next 3 to the string. Once again, if the error returns you switch to the other 3 so you now have 9 working panels and the faulty one is one of the remaining 3. You can then add the remaining 3 panels one at a time until you've found the problematic one.
 
Speedster said:
Were you able to make any progress today?
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Not yet. And going away soon for a week.

Today it acted even weirder. In the morning it was hovering at 405v which is higher than the NMOT voltage but still less than STC voltage and within the expected voltage range.

Every spike in voltage correlates to a drop in amps which results in less kW.
1163616113.jpg217321038.jpg
 
DibbsZA said:
Solar system newbie here. I have a question about my panel string setup that maybe someone could clarify please.
I have a 8kva Hybrid Sunsynk with 3 strings of 8 x 450w panels. 16 North Facing + 8 East
During full sun (11:30) I am getting just over 3kw which seems to me to be on the low side?
Any Comments on this wiring, as I think I am only getting power from 1 of the MPPT?

Pics.
View attachment 1447959

View attachment 1447961

View attachment 1447963
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The VoC isn't within the minimum startup range that the Sunsynk MPPT needs to start pushing amps through your system:
  • Solar Input
    Max power input – 10400W
    Max V DC input – 370V (100V~500V)
    Max current input – 18A + 18A
    MPPTs – 2
    MPPT Range – 125~425V

You need a minimum VoC of 125Volts to get the solar charger to work. Try and rewire the extra 8 panels in series to push the voltage > 125.
 
A friend had a Deye inverter system installed at their house. They have some cheapo LED ceiling light units in some of the rooms in the house.

Soon as load shedding hits, these ceiling light units has a glow, no other lights have anything. Why would this happen?
Soon as load shedding ends and municipal supply returns the glow is off.
 
oukie said:
A friend had a Deye inverter system installed at their house. They have some cheapo LED ceiling light units in some of the rooms in the house.

Soon as load shedding hits, these ceiling light units has a glow, no other lights have anything. Why would this happen?
Soon as load shedding ends and municipal supply returns the glow is off.
Click to expand...

We have the same with one LED light in our kitchen so I am keen to figure this out as well...
 
Just to add, in the bathrooms they have some of these emergency load shedding light bulbs if that will make any difference.
 
oukie said:
A friend had a Deye inverter system installed at their house. They have some cheapo LED ceiling light units in some of the rooms in the house.

Soon as load shedding hits, these ceiling light units has a glow, no other lights have anything. Why would this happen?
Soon as load shedding ends and municipal supply returns the glow is off.
Click to expand...

I've noticed with some LED dimmers our lights flicker when we switch over to battery.
 
My kit sitting in boxes still waiting to be installed :crying:

Just waiting for Mike from Thorne Solar to pop in and give me a quote for the full install.
 
oukie said:
A friend had a Deye inverter system installed at their house. They have some cheapo LED ceiling light units in some of the rooms in the house.

Soon as load shedding hits, these ceiling light units has a glow, no other lights have anything. Why would this happen?
Soon as load shedding ends and municipal supply returns the glow is off.
Click to expand...
Do they have the earth neutral bond installed?
 
Speedster said:
Do they have the earth neutral bond installed?
Click to expand...
Should be, was installed professionally (yes, I know it doesn't mean it was done 100% correctly). Any way I can tell them to check or how would we know it is indeed installed?
 
oukie said:
A friend had a Deye inverter system installed at their house. They have some cheapo LED ceiling light units in some of the rooms in the house.

Soon as load shedding hits, these ceiling light units has a glow, no other lights have anything. Why would this happen?
Soon as load shedding ends and municipal supply returns the glow is off.
Click to expand...
Im told that this has something to do with a "mix circuit". I also have this and my guy is coming to sort it out.

He said the previous installed was lazy and took shortcuts.
 
oukie said:
A friend had a Deye inverter system installed at their house. They have some cheapo LED ceiling light units in some of the rooms in the house.

Soon as load shedding hits, these ceiling light units has a glow, no other lights have anything. Why would this happen?
Soon as load shedding ends and municipal supply returns the glow is off.
Click to expand...
Your friend should buy some decent LED lights, that should fix the issue
 
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