Hi All!
New package of Multi RS shows 8kWp, what does it mean?
Does it mean I can connect 2 PV strings, 4kW PV peak power which of them ?
Thanks!
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I stand to be corrected but I don’t believe the spec has changed.
That is more likely the marketing way of saying that is a suitable amount of solar you can attach (standard overpanelling), since 4kWp of solar does not constantly produce 4kW outside of lab conditions.
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Specs has not changed for today - 6kW 2 x 3kW per string
But it’s very good idea (8kWp) for specific designed “overpanelled” systems, for bad weather conditions for example
If I am wrong @guystewart will no doubt correct me, as it wouldn’t be the first time a change wasn’t documented, but I would be surprised as this is something that would typically be advertised far and wide.
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A few weeks ago the (my) Multi RS 6000 had a mppt peak of 7412 watt, 408 volts, (2×10 panels 6900 watt peak,) no warning messages.
The older versions of Multi RS (from older packages with “6kWp” mark) still produce 2 x 3000 W with 2 strings x 10 450W panels, but it’s working great! I have a couple hours of 6000W in sunny weather
Is it a secret - what kind of panels you using? 690W?
20 panels 345 watt each
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Understood, thank you
Sounds like cloud edge phenomena when magic happens. Seriously doubt that is sustained for a prolonged period.
Will see in a few weeks)
6000W sun power form 9kWp array for a couple hours in sunny weather (old type of package) is real
That completely adds up. I work on around 30% for typical losses and you can see the solar limit, seems like a balanced system.
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Indeed only for brief moment.
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I see spectacular numbers here as well briefly on the mppts, then they seem to work it all out and revert to normal production.
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Hi @Andrija,
The 8 kWp was a mistake in printing and is being corrected.
The datasheet specifications are correct.
Apologies for any confusion, and thanks for the report.
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Thx!
No confusions!
We (end users) always hope that our expectations are now realistic)
Still waiting)
For today it’s like a standard - to build >=30% overpaneled systems.
What’s the Imp and Vmp for those panels?
When you bought the Multi RS, probably the firmware and specs at that time were saying 13A per tracker.
Later they reduced it in the firmware to 12A per tracker.
So those 3000W per tracker were limited because of the voltage or because of the current of the string, because when limiting to 3000W, you have 2 MPPs (or a flat line)…
Could you also post the voltage of the trackers, side by side with the power, when that 3000W limit was hit, on March 22?
It would be nice to see how it’s limiting to 3000W when overpaneling is present, and where it settles on the IV curve with the MPP.
Thank you in advance.
limit hitting every single sunny day)
Working perfectly >= 18 months
And yes, i should do my “homework” about <450V <13A with strings configuration
best combination for my opinion is 430V 11,5A peaks
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Thank you.
As the MPPTs are looking for a new MPP each 5 minutes, it would have been interesting to see if the voltage is the same from scan to scan or it would stay on a variable range, but still respecting the VxI = 3000 rule.
For example, for 5 from 6 trackers the voltage is about 311V and the current 9.6A, but on the sixth the voltage is 285V and it’s compensated by a slight increased current, 10.5A. It’s a shaded string?
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