Any Thermal Management Issues with Deye SUN-16K-SG01LP1-EU?
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DIYrich
Solar Wizard
Deye makes Sol-Ark. I haven't had problems running Sol-Ark at the max for extended times (exporting during high TOU prices). Sol-Ark may have specified some upgrades.
My normal Peak usage is 7-10kW (without exporting).
How long do you expect to be running at Max?
My normal Peak usage is 7-10kW (without exporting).
How long do you expect to be running at Max?
For like 80% of the time.
Edit: I should say continuously at 80% (12.8 kW) and 100% capacity for only short periods.
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kolek
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Running 80% of max output continuously on anything electrical or mechanical would be excessive in my opinion. Like running a car engine at 80% of max revolutions or output continuously would obviously shorten the engine lifespan. Say you have an engine with max 10k RPM, that ain't gonna last very long running at 8K RPM continuously. Extreme example but in the case of racing, at least in the olden days they would replace the engine after every race. In the case of electrical the aging wouldn't be as extreme because we're talking about MOSFETs, BOBA FETTs, semiconductors, and electrical components which don't "wear out" in the same way, but still wouldn't recommend it. I've been told by a Deye salesman to expect maybe a 10 year life span for the inverter. So maybe you could only expect an 5-7 yr. life running at 80% continuously? Total guess on that, maybe I'm wrong. But I'd say maybe run 2 in parallel?
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80% of 16kw is around 12kw but the thing to be aware of is what power factor is that? are you using 12kva or higher and what's your peak current draw you would have to find out these factors before getting a real answer. As you get higher towards maximum load the efficiency drops and the bi product of that is heat. As kolek suggested maybe using two in parallel might be the better option especially if peak load and KVA are higher.
kolek
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Wow see I didn't know that but it makes sense.
Yes and crazy to think that peak efficiency of a HF inverter is at only about 30% but it only drops by around 1.4% for every 10% over 30%.
But with a 16kw at 80% load inverter that's a big chunk of heat
I would consider a bigger inverter and run it at a lower percentage of full.
To avoid wear and tear to such a degree and also reduce the heat somewhat, thinking that a bigger unit has more cooling built in.
Depending on the room temp a small minisplit could be beneficial, driven by the inverter itself.
Deye has a brand new model with 20kw f.ex.
Like all other electronics an inverter will last much longer being run at 50% instead of 80-90.
To avoid wear and tear to such a degree and also reduce the heat somewhat, thinking that a bigger unit has more cooling built in.
Depending on the room temp a small minisplit could be beneficial, driven by the inverter itself.
Deye has a brand new model with 20kw f.ex.
Like all other electronics an inverter will last much longer being run at 50% instead of 80-90.
With power factor and load factor taken care of, I should be able to operate it at 80% capacity (12.8 kW) continuously, shouldn't I?
Yes theoretically but it would need a cool environment as you would be offloading something near 1000w of heat
If that's the case, wouldn't the manufacturers' specifications and advertised / vouched factory test results be false? Aren't these devices factory load tested and third party certified?
Practically, I expect the device to hold up as long as temperature is (and all other conditions are) within the manufacturer's specified range which is indicated in manufacturer's data sheets / specifications. Otherwise, manufacturer's specifications and certifications would be unreliable if not meaningless.
You can interpret them like that indeed but most houses wouldn't have a constant load, it likely fluctuates IE most of the day my house uses 400w at times it might spike to 4kw but it mainly runs at 400w so the inverter has chance to cool off. In your case it's more commercial IE your mining crypto and have a constant non fluctuating load of this is the case then the manufacturers haven't necessarily designed their systems in this way. You should check the warranty information as that's more likey to tell you what you can and cannot do rather than the spec sheet when it comes to a constant load of it says nothing treat the specifications as gospel and have at it. If the thing dies within warranty and you used it within specs and abided by said warranty it's on them.
Thanks. The continuous load I'm talking about is average load not peak load. Like I said, power factor and load factor taken into consideration. Typically, datasheets / specifications include for both continuous (average load) and peak load ratings and the warranty never contradicts the datasheet conditions. I checked the warranty requirements vs the datasheets for a popular brand just before I started this thread.
kolek
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Yes, you could. Nobody said you couldn't. Give it a try and see how long it takes to burn out, then let us know how it worked out for you. Inquiring minds want to know.
Brucey
Solar Wizard
You should be good with the top end Deye at max power. When they test them they are running at full power constantly, and surge beyond. Plus they have the three phase units for larger residential/commercial and those users won't be babying them.
If this was a random character aio then yes you would prob want to derate. Some of the ones that have come out in recent years have been found tragically wanting.
Even with ICE, manufacturers run them at full throttle for hundreds if not thousands of hours during durability testing.
kolek
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Not doubting you but just curious how you know Deye's test procedure. I've had a lot of experience dealing with them and they basically never provide a straight answer to any question I've given them. I've actually concluded they must be deliberately pretending to misunderstand every question as a way of mitigating their need to offer customer support.
I'd think to know this information with any degree of certainty you'd need to literally be one of their test engineers. And I wouldn't put a whole lot of trust in any of their marketing claims.
Exactly. This is what I expect with high end inverters like Deye, Schneider, Victron, et cetera when users operate them within design specifications / environmental limits. I just want users who have used them to share their experiences here.
Because high end equipment typically have certificates of conformance issued by internationally recognized independent third parties certifying that the products have been tested to international standards. For this inverter, one relevant international test standard would be IEC 61683 which involves testing the inverter up to and above it's rated power. Deye has got several certifications for their inverters, one of which is attached herein as example.
kolek
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I wouldn't describe Deye as "high end." Even if the physical hardware is good, the company provides zero support in my experience. Personally I wouldn't buy one of their products again. But whatever, buy one and run it at 80% capacity, I'd like to know how that turns out.
kolek
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No way would I put Deye on the level of Schneider & Victron. Those companies actually respond intelligibly to support requests and they honor their warranties. Deye does neither. I had a warranty claim with Deye and they just stopped responding to messages as soon as they discovered I had a valid claim.
Thanks for sharing your experience on their quality of (no) support. That's also important information in making a decision.
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Hmm. Thanks for sharing your experience on their quality of (no) support and (no) warranty. These are also important information in making a decision.
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kolek
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Hmm?
I'm not anti-Chinese but what percentage of Chinese companies do you think ever actually honor warranties? I've done business in China for 2 decades, in my own experience only 1 company actually did what they promised when they screwed up. The business culture is just different there. It's "The customer is always wrong" business culture.
And maybe their low pricing just doesn't allow them to honor their "warranties" or provide support. As long as you're ok with no warranty and no support, go for it. But when it fails during the warranty period after you burn it up running at 80% cap, just know in advance you now have a very large paperweight.
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So don't pay for the 20 year extended warranty on my Solis inverter your saying?
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