Why are these Danfoss SOLAR Inverters So Inexpensive?

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[@patrickbonin137]

I have been using Danfoss equipment for the last 40 years And never had any problems..I can fully recommend...and I wish to add be it military or civil there stuff is top notch..ps I don't work for Danfoss.. lol

[@robinsonmas5876]

Are Ul listed?

[@VenturiLife]

We had some Danfoss drive speed controllers for some heavy pump equipment. It's great stuff.

[@flick2040]

Danfoss and Vacon are my go-to for low power (

[@somedude1908]

Danfoss makes great gear, no question. For a top notch inverter, consider Fronius of Switzerland. (I have a 10 kW 3 phase inverter on the wall in my workshop ... brilliant).

[@neotherion]

The DC disconnector has many poles. and they are used for making the DC break easier. DC current is not easy to interrupt.. so the breaking of the current occurs in multiple spots at a time. if you were to do it in just one point the switch would become very expensive.

[@justmeEnglandUK]

Very popular and known for making water heating valves and electronics control systems . been going for years and good reputation in central heating industry

[@keydivermr3558]

Thank you for the great hookup Jehu! I just ordered one for my employee, who has been trying to install solar for years. I guess it will be a bonus for him! :-)

[@elioalcala4371]

Please let me know of a. CHEAP rebuilt one cause the danfoss are gone!

[@CL-gq3no]

Strictly speaking, it is "split phase AC" rather than "two phase AC". Two phase AC is actually something different and it's not commonly used. In North America we typically have 240 volt split phase AC (120v x 2) for residential or light commercial and 3 phase AC for commercial and industrial sites.

[@TheMelbournelad]

Chris L must be a uk or Europe thing. Maybe based on 220-240v networks

[@marzsit9833]

@@TheMelbournelad in europe the power is also split phase, but with no neutral so no 120v. the ac power grids in the us and the rest of the world are basically the same until you get to the point of distribution. in my case the point of distribution is the transformer mounted on a pole outside my house that takes in 12k volt from a single phase line that runs along the very top of the pole, steps that down to 240 volts and splits the phase with a neutral line. in europe the situation would be the same except that the transformer would not split the phase or provide a neutral line so you get 220-240 only.

[@andreafalconiero9089]

@@marzsit9833 You are correct about North American residential wiring, but I think you are mistaken about most European standards. Here in NA we have 240V split phase, which is two "hot" leads 240V apart, with a neutral from the transformer centre-tap which is typically grounded somewhere. This gives two, 120V hot leads, 180 degrees out of phase and a neutral of ~0V, or it can be used to supply 240V across the pair of hot leads for large appliances like electric ranges and dryers. In contrast, all European residential supplies are 220-240VAC single-phase, with one of those lines being the neutral (~0V), and the other the 'hot' lead. This can theoretically cause problems if you try to connect European devices to 240VAC North American outlets that use something like a NEMA 6-15P. The outlet provides the correct voltage, but if the European appliance has used the neutral power lead for case grounding, then this will be extremely dangerous here, since it would become a live, 120V connection wrt ground! In practice, I don't think this actually matters much, if at all because in most of Europe, _unpolarized_ 220VAC outlets (2-prong, with no size differences) have been used in residential circuit wiring for a long time, so I doubt very much if any appliance that relied on the neutral to provide case grounding would satisfy European standards either, since that would be equally unsafe (more so!) Therefore, although _theoretically_ there is a difference (in that if you measure both leads wrt true ground, the systems would appear different), in practice, it doesn't matter.

[@firecrow7973]

@@andreafalconiero9089 american devices such as a clothes dryer use 240 for the heating elements, but the controls are 120v

[@andreafalconiero9089]

@@firecrow7973 That makes sense. Since the dryer plug is 3-wire with a supplied neutral, it's easy enough to tap off that internally to get 120VAC if desired for the control circuits. You could still use a European dryer in NA, but not vice-versa, since presumably those models must be designed to run exclusively off 240VAC.

[@nyghtmyst5118]

So did you do more on this and how did it plan out

[@gregorythomas333]

Danfoss is a great company...they have very good equipment. Efficiency of 97.2% Damn nice!

[@bighornaudioproductions6104]

Hi is it better to use some or all dc appliances would it be more efficient in dc vs converting it to ac?

[@marzsit9833]

really good prices for an excellent piece of equipment. with the cost of 300+ watt panels dropping i'm tempted to cover my south facing roof with them and get the 4400 watt version.

[@harleypater7317]

Danfoss are one of the best/biggest fridge compressor makers. These inverters should be good quality but not really diy like all you other stuff. They will need a electrician to install. Is the little guy at the end your dad? He is awesome lol.

[@niceguy3161]

Is there any other place where you can get this grid tie inverters ?

[@kelvinham8576]

Danfoss is a well known and respected manufacturer of industrial drive controllers. They have a long history of manufacturing high voltage control equipment including variable speed controllers, industrial switch gear and of cause inverters for UPS systems.

[@henryrollins9177]

Also air/con & fridges compressors and industrial instrumentation...

[@critterscropscuisine2886]

@@henryrollins9177 According to their website, they no longer make solar inverters for the US Market, making this video worthless.

[@mikemotorbike4283]

@@critterscropscuisine2886 $2,000 off scratches to my flea market itch. mmmmm, 25 year duty cycle feels so gooood. And those $50, 240w solar panels on that used solar panel website, wow, if I do the work myself it'll be all gravy after only two years, and I can afford to buy a heat pump.

[@pegr69]

Danfoss is a Danish company that is world renowned for heating systems, well pumps and whole host of housing equipment, I can highly recommend them, they have always made really solid equipment.

[@stevenvarner6633]

That is definitely awesome to hear I'm really rock solid in trying to find out more things about the conversion of DC solar into AC and Supply my house

[@mfgxl]

Any one buying one of these should check with their electrical provider to be sure you can back feed. If you use all you produce, than this is not any issue. Also remember that you need enough solar panel voltage to get this this up an running. I have not looked at the specs, but most don't up convert, only down convert which means you will need enough solar panels connected in series to get above 240VDC

[@ekbuz]

@wu ming The voltage goes almost to max with barely any light, but fluctuates with temperature. It's the current (amps) that is affected by how much light it is getting. You need to calculate your max open circuit voltage (Voc) on the coldest day of the year (using the panels temperature coefficient) and make sure you stay under 600V. You also want to check what it'll run on the hottest days to make sure you stay above the minimum 230V. As an example, for where I live (gets very very cold, but also hot in the summers) I would need 9-12 panels attached in series to be in the desired voltage range.

[@boblewis5558]

Just about anyone technical in Europe will know Danfoss, UK especially, as they are a ubiquitous supplier of radiator (water central heating) valves, thermal controls, HVAC plant and many other components and accessories in both the domestic and industrial markets as well as a major supplier of other parts in allied industries. They have been around in the UK for DECADES. I'm 67 and have known the name for over half a century and used their products for four decades just as a diy-er. They are as well known a name as Honeywell in the UK and I suspect that name is very familiar to North Americans. Ask any UK plumber (or I suspect, German, Dutch and of course Danish/Scandinavian) if they've heard of them and they'll look at you as if you're smoking something - DUH! Yes of course! 😂😂

[@naughtiusmaximus1811]

Quite big in the States as well when it comes to motor drives & HVAC equipment.

[@jam99]

Don’t these look like the Delta / Eltek theia He-t inverters that were recalled in the states?

[@akasha1337]

can these ship to eu from eu ? or any more info about the product warranty etc if they refurbished thank you

[@stevenvarner6633]

Where do I buy one of these

[@petski999]

The reason for having all of the switches in series is for high voltage DC arc suppression. A single pole switch would sustain an arc causing a melted switch or even a fire.

[@jehugarcia]

Interesting

[@thedavesofourlives1]

@@jehugarcia thats why you aren't supposed to use AC breakers for DC use.

[@mikeorjimmy2885]

Should use an electronic fuse replacement circuit. they are solid state and have no chance to arc unless the MOSFET goes bad. Which can happen I have replaced plenty of them during my career as an electronic tech.

[@jameswyatt1304]

@@mikeorjimmy2885 When you say "unless the MOSFET goes bad", remember that this is the safety interlock on the front end and MOSFETs go bad. Many solid-state components seem to have a love for failing shorted, especially if it saves the $0.50 fuse meant to protect it. They don't over-engineer the other parts, so I figure they needed to here. It's like the zig-zag PCB patterns for arc/transient containment on things like sprinkler controllers; it often shows where earlier designs failed enough to pay the extra cost to prevent it.

[@hermannschaefer4777]

I bet these switches are for 3-phases that are standard all over Europe..

[@6sensory]

Anxious to see how you tie in the Powerwalls

[@paaao]

Homes are single phase. The secondary transformer is center tapped, and grounded, giving it two out of phase wires of 120 VAC in reference to ground, or the secondary neutral where it’s bonded, but the secondary coil is still single phase 240 VAC

[@leeoliver2969]

Thank you for making this clear

[@6sensory]

Big thanks Jehu, I purchased two.

[@derangd3339]

We use tons of danfoss controls in the refrigeration hvac trade.

[@simondid]

so Danfoss is a massive Danish company that makes high-end industrial stuff I'm really surprised that you haven't heard of them!

[@Deiphobuzz]

Yeah same thoughts..

[@jehugarcia]

Us Americans we think we are the center of the universe. Danish what? I though that was a pastry

[@Miata822]

@@jehugarcia Danfoss makes tons of industrial equipment. They are huge, do lots of business in the US. They also had a big recall on inverters. Are these some of those?

[@Pats-Shed]

I have been using Danfoss motor drive inverters for years in the refrigeration industry and are excellent machines, they are the default choice for trouble free installations . They manufacture a huge range of mechanical and electronic controls for heating system and refrigeration systems and industrial control. I can't recommend them highly enough.

[@Gheotic]

@@jehugarcia As a Dane that made me laugh

[@AlexdaCunha]

Danfoss is very much known among people working in industrial systems. They were famous for manufacturing pumps. At least here in Europe.

[@Miata822]

In the US too. They spun off the pump business under the brand Concentric.

[@Runenaldo]

For pumps it is Grundfos, also a danish company though.

[@AlexdaCunha]

@@Runenaldo You are right. I guess there used to be some pumps with AC motor and frequency converters integrated. Maybe the pumps were grundfos and the eletrical equipment was Danfoss

[@atnstn]

I own A KORTING fridge from 1999. It uses Danfoss compressors - two of them. Big fellas, heavy and solid too. Whisper quiet and ... get this... 24 Years of continuous operation - work flawlessly. 24 YEARS!!! They certainly don't make the like this anymore.

[@keithchappell1200]

The ZigZag through the isolator ensures that if one set of contact is welded, then there are multiple other contacts that can break the circuit

[@lernenmitrobin]

The DC switch is wired over all contacts to reduce the stress on a single contact. So, if you have all contacts in series, the voltage per contact is divided by the number of contacts ;-)

[@crabstring6386]

Hey friend can these danfoss inverters bee use as an off grid inverter

[@kemarwatkis7828]

Are these inverter pure sine wave?

[@jakeflo4215]

Can you use this to plug in 110v outlet?

[@jamest5149]

Looks much better quality than 90% of the US/Australian/Chinese brands I have seen. Looks first class.

[@johnivy5197]

What model is this unit ?

[@djexotic07]

this look promising for my little set up just need to learn how to connect the batterys for off grid

[@wallysoberano9598]

Is it has a battery buck up during night? Or only solar and grid?

[@kurtzxcvb3481]

Are you ever going to do an update on this video where is it at

[@chrisdamonsworld]

Nice I want to see how u use it as a off grid inverter with batteries

[@michaelperry2446]

Chris Damon I too wish to see jehu bypass the WiFi that enables the system!!!! I am thinking of another system complete to run into the ac Side for the boost. Than tricking or hacking the system to think its into some grid!! some how, get a computer expert that knows these systems.

[@luiscosta9261]

I am assuming you can connected them in parallel to get a higher output wattage? How would you get 2 phases @ 12kW? I'll need it to charge the car and run a heat pump, plus other house loads... Thanks for the review and intro to this product!

[@chuck1011212]

Those prices are truly awesome and no need to pay extra for a remote monitoring solution. Wow!

[@twelvewingproductions7508]

Chuck, Careful there. It's not that there is no "need" for remote monitoring but that this service is supplied free of charge by companies like SolarEdge and others because it's mandated. The thing to understand with these is that because they don't communicate, they won't be approved for grid tied installation in California... and soon other states will be the same.

[@twelvewingproductions7508]

@Jerry Moody, at least it's not obsolete. What I had to say was a warning, and it is 100% valid. I don't have a dog in this fight. I don't care what inverter you use. I'm simply flat out saying that if you don't get an inverter that can communicate you may wind up having your system denied a connection.

[@leeferguson3410]

I picked up two of the 4400 and hope to use 20 435 watt sunpower panels with them

[@jonathanwhittenberg217]

lol. your pops hanging out at the end was hillarious. :)

[@raja28chowdhury]

i always learn something new..... i love it .............keep it up

[@johncarr123]

Can you review MPP solar inverters that are made in Twain?

[@HamguyBacon]

do you think there will ever be another 60hz version on sale? didn't find out till too late.

[@Lea-ww9hf]

Hey! Love your videos! I saw your Samba convertion, did you tried to power it with solar panels?

[@jehugarcia]

no

[@irish-medi-weed-grower5240]

your pops in the background just like chillin .

[@6sensory]

Jehu once these have the setup program run, access to some setup items will disappear and need a contractor's number to get back in if system changes configuration, for instance. Instructions say in lieu of this password, a call to Danfoss is necessary. If we are DIY-ing it, got a suggestion for the installer code?

[@Montymc1]

Does Batteryhookup have Tech support?

[@DStrayCat69]

Excellent info :-) Thanks

[@johncarr123]

Can you review 48V hybrid inverters Grid tied and battery backup connected to a used model S or Model 3 25V battery packs? Can't one video using an all in one inverter with used tesla pack. Thank you

[@johnchase7667]

are these ul1741 certified?

[@dagdernit572]

Are these recalls? If so, have they been fixed by the manufacturer or a certified outfit? I know that there was problems with their inverters. Thanks!

[@mazmirzakhani4217]

Good job mate... these are all Grid Inverter . do you have any Battery Inverter?

[@muhammadsalau7014]

Is this a Pure Sine Wave Inverter?

[@Slicksparky]

As an electrician, we still call it "Single Phase", although it is truly using two different phases, but yes, Chris L is correct. Thanks as always Jehu! Need to talk to you about a business I'm thinking about beginning if you have a moment... how do I get ahold of you?, I don't do facebook.

[@vegandiver]

You're right It's single phase... The neutral and ground just define the average of the phase and you can sink power to the average instead of sinking it to the other terminal in the phase.

[@ZoeyR86]

Yes and no a lot of those bigger systems are 300v+ 3 phase. But yes your home is on single phase with an neutral aka average. Its not 2phase if it was a true two phase it be in phase and jumping and you get subtraction from neutral meaning 120 or 0v not 120-240v

[@jehugarcia]

220v single phase with center tap?

[@ericspda]

jehugarcia It’s officially referred to as split phase in the US for residential power. It’s ‘single’ phase, since it’s a single phase off the grid run into a center tapped 240V transformer. Both legs give you 240, but one leg to the center tap is 120. So you technically see two apparent phases inside the house, but it’s still called single phase, or split phase service.

[@ericspda]

US residential power is 220V single phase with center tap, but this inverter is 220V single phase. There is no center tap, it is not designed to use or operate on 120v. It does not need a neutral, just a ground. Plenty of international gear will work just fine with American split phase power, as long as it says L1, L2/N then you’re good to go. But neutral is only required if something internally relies on 120V, otherwise it’s just ground and the two hot legs. In this case, the leg marked L2/N is going to have 120V on it with respect to ground, so connecting that to ground is going to both put 120V on ground and short out L2.

[@davidwattierfilsdegabriel2933]

Hello how much solar panel minimum to operate the Danfoss SOLAR ,? cordially

[@kennedy67951]

Hey are these inverters pure sine wave or not? If not , 'I don't think you can use these for your electronics. Please check before you buy.

[@stalmark]

When switching high voltage DC (like 600 VDC from the panels) you have a risk of arch between the contacts when the switch opens (as in switch off) and you therefore need a long (relative) distance between the contacts compared to switching AC voltage. This can be accomplished by coupling several (AC) switches in series. When switching AC power the same issue do not occur due to the alternating current pass through 0 volt 120 time a second (60 Hz system) and then will by itself stop the arch.

[@climatechangepreppersfaceb2148]

Arc

[@jameswyatt1304]

@@climatechangepreppersfaceb2148 Well, many arcs are arch-shaped. (^_^)

[@JakDac]

Can it be modified for off grid ?

[@johnaugsburger6192]

Thanks

[@bobj8896]

You mentioned 2 phase AC. Technically our AC in U.S. is split phase or single phase running 2 hots 180degrees out of phase.

[@captainmashedpotato2630]

120 degrees...

[@1978jra]

@@captainmashedpotato2630 In US spilt phase system it really is 180degrees. Three phase system has 120degrees difference.

[@celsostarec6735]

@@captainmashedpotato2630 Tri phase AC has 120° phases. US uses a transformer with a hot at each end of a coil and a neutral from the central tap. Hence 180°.

[@marzsit9833]

i've tried explaining to co-workers the difference between 3-phase and split phase and i usually get blank stares.. lots of people call it 2-phase power and it's a tough habit to kick.....

[@boblewis5558]

For Europeans who understand yellow 240 v to 110 volt site transformers and the way they work for safety purposes, the US mains system is often (but not always) working in a similar way. It's just that with the yellow site transformers which have a centre tapped transformer there are two 50 volt AC lines referenced to the centre tap which is connected to ground. The 110 volt supply (European yellow transformer) is taken ACROSS the two output lines which (due to the centre tap) are 180 degrees out of phase so it's not two phase but split phase. In the US they have an almost identical transformer connection but giving split phase 240 volt (each half of the output transformer giving 110/120 volts referenced to ground at the centre tap. This gives a 180 degrees out of phase output across each winding, so that 220/240 volts is available ACROSS the output connections (NOT using the centre tap) but with a max of 120v to earth as a consequence since the neutral/earth is connected to the centre tap. Quite a neat system to overcome the current/power limitations of a straight 110/120v only supply which is a bit alien to Europe but common place in the Americas generally (and other parts of the world too).

[@dandearman2871]

I think the circuit loops through the disconnect through multiple contacts because with DC it is hard to open a circuit under load. With DC a single contact as it opens under load will draw an arc that would not extinguish. Using the spaces between multiple contacts in series gives the current a better chance to stop and break the arc. Danfoss has been around for a lot of years. We used their DC motor controls on our machines at work.

[@davegeorge7094]

Correction: 2 phase is long gone. You say split phase( L1,L2 & neutral) Danfoss makes quality refrigeration an now electronic power equip..

[@davegeorge7094]

@eabyrd1506, Good info.. I'd like to add the reason the solar DC switch is jumpered into series of switches is because of serious arcing occurs on switch contacts with just 42 v open circuit PV terminals.

[@edwardbyard6540]

Like basically everyone in the UK, I have a Danfoss thermostat in my central heating system. They are very well known. Been around for ever.

[@tgcoder]

From the specifications, it appears that the input voltage must be between 230-500VDC. Therefore, normal battery voltage of 24-48VDC would not work on these inverters.

[@jehugarcia]

Correct

[@LocoDiego]

Best video man ive still been wondering if these were on sale , Been wanting to go solar, would wind turbines work connecting to the danfoss

[@jehugarcia]

Only if it make over 200v

[@joeyholthusen6495]

If grid goes down does the inverter automatically shut down so it doesn't fry a lineman? Or do you need a transfer switch of some sort?

[@ck9581]

It is call anti islanding and is a legal requirement for a grid connect inverters, they only output power when they can detect the grid. The inverter has to match its output frequency to that of the grid. As soon as the grid goes down the inverter automatically stops output.

[@jamest.5001]

Grid power is AC, but 99% of everything in your house is actually DC, or could be DC, it's amazing how things work!

[@gabesennheiser]

so could I use one of these inverters on a off grid system in my RV?

[@jehugarcia]

Not likely

[@jameswyatt1304]

Wow, I learn a lot from these videos, but at 06:12, there's a left turn. Hope this helps: The L1 and L2 carry 120VAC relative to neutral, but 180deg out-of-phase to each other, so 240VAC between them. There's no ground on the AC-side terminals; the ground wires for everything come that bottom ground rail. You have to track ground and neutral separately, especially if using GFCIs anywhere. Neutral can be volts off of ground and change if there's high-draw machinery around.

[@CrankyCoder]

What is your take on these? www.mppsolar.com/v3/split-phase-lv-series/ I am looking at those for the split phase. They aren't grid tie, but I am going battery so I don't need to back feed.

[@jonasniiotoearyee8353]

Good work I love it

[@peteasmr2952]

I eventually want to have a room in my house that has European power from a 50hz unit and the rest of the house on 60hz. There'd be a solar pannel setup just for the EU system one. I want to collect tech from around the world and would like a way that won't ruin the tech by just stepping up 120 to 240 at 60hz i know most newer tech doesnt care about hz as much. But I have some other projects I want to test and it would make it much easier to have the native output. I was looking into ac-dc-ac converters that have a very good sinewave output as an option till I can build my dream home.

[@pete4778]

I would like to know if you would recommend the Aim power 5000 24 volt pure sine inverter for off grid application. I would like to use a split level 12000 btu 110 volt AC air-conditioner for this application please advice, thank you

[@jehugarcia]

Sorry I don’t have personal experience with that specific model, maybe other viewers can chime in

[@azinfidel6461]

Pete, I'm using an old Trace SW4024 Inverter to run a 12000 btu 110 volt AC mini split Inverter air conditioner. Inverter AC units are variable speed and are more efficient ,look for a unit with a SEER greater than 20 (higher the better).Mine starts up pulling 4 Amps then slowly increases to 9 Amps. When the room is cool, Amps go back down. Best thing since sliced bread.

[@lightshow10]

Question. I was looking at there specs and I saw that they have a starting voltage of 230v.on the dc side. So does that mean the system needs to have at least 230v’s before it will start converting dc to ac? And if that’s the case. Then you need at least 10, 24v solar panels. Right? Am I understanding that correctly? Or is there a way to get these inverters to start converting dc to ac with less voltage?

[@jehugarcia]

That’s correct 230vdc needed

[@lightshow10]

Thank you. That answered my question.

[@ashforkdan]

Does it have a battery charger in it? Does it have a built in charge controller? Is it sine wave or modified? Nice price if it does.

[@JamesKlafehn]

Dan az I was wondering the same thing. Did you ever find an answer

[@davidbagley1783]

Is this 48 volt capable?

[@SteveWrightNZ]

"why" question doesn't seem to be found amongst all the "this is a terminal, this is a heatsink" talk.

[@joeyholthusen6495]

How do you think using 12 volt lithium car batteries work for back up?

[@jehugarcia]

it works, been the standard for years

[@FreestylerAlbert]

is there any EU version company of battery hookup??

[@jaycharles9548]

Do you have a video on installing a "limiter" so power won't feed the grid ?

[@timh8273]

In series up to 600v?? so if one panel gets dirty the whole thing looses power?

[@tripzero0]

Usually pair these with mppt controllers for each panel. Turns off panels so they don't kill the entire system.

[@vansamol1654]

can u test LTO battery pack?

[@boki3jaki]

Hi Jehu. Thanks for the great video. I like these inverters. But my question does a bms exist that can handle the high voltage 240v. How would you protect your battery bank if you rewire it to 240v instead of 48v. Any input or links would be helpful. Thanks

[@Jimmeh_B]

You would need to design a BMS capable of such voltages. The question is though, why would you even contemplate running those sorts of voltages on a battery bank? The cost of components and the time cost to engineer such a unit would greatly outweigh any benefit, of which I can't think of a single one.

[@boki3jaki]

@@Jimmeh_B thanks for the reply. The reason if you look at the specs the input DC current for this inverter needs to be 230V - 500V. That is why I was asking. I can spend 650 compared to 2500 on a similar sized inverter 4400w. I have about 15kw of 18650 cells at the moment.

[@jehugarcia]

It’s not hard and it’s very common, every modern EV has a 400v pack (96s) there are a few bms units out there that work well.

[@Jimmeh_B]

@@boki3jaki fair call. Had no idea.

[@Jimmeh_B]

In that case, if you go ahead with it, be careful. I've worked with HV and have been a hobbyist for 35 years. Those sorts of numbers DC make me nervous.

[@tel607]

dc arc can weld switch in closed position .

[@sjay67]

Can I use in Australia?

[@TheEpijay]

Jehu Garcia, when will you update regarding use with batteries as a regular inverter- price and specs makes this a tempting purchase option, only, I'm not too keen on grid tie

[@jehugarcia]

Someday I’m going as fast as I can

[@fritzsouffrant3303]

I want to buy this power inverter but I don’t any way to do that

[@StevenBTuner]

This looked like a fantastic deal until I looked up the approved list of inverters for where I live, and these unfortunately are not on the list. As these are a few years old, are a discontinued item, and may not have all of the necessary safety features for your country - you may have issues getting an installation approved. Danish quality they may be, but approved for use in Denmark they are not...

[@HotRockCentral]

Still got any to sell, 3800 watters?

[@DigitalCircus777]

You mentioned Grid tie in for this unit, but no mention if they could be used for residential Off Grid use? It's just an inverter, so shouldn't be a problem with same or similar configuration.

[@loanauditscal]

I hear that inverters are the first thing to burn out in a PV system. Why is that? Do they run hot?

[@ericspda]

Inverters are vastly more complex in operation than solar panels, so they tend to not last as long as the panels themselves. It’s possible to design a inverter to last a very long time, but it would be massively more expensive so it’s not done. A good inverter lasts typically 15-20 years, so it’s not really like they’re swapped out too often. Some of the lower cost or poorly designed ones might last closer to 10 years, whereas a solar panel can have a practical life beyond 30 years.

[@malcminer3367]

Your Dad wants his dinner..lol.Bless oldies and thank him for letting me stand on his proud shoulders.......Enjoy the sun

[@MastercraftKARIGAR]

That jigjag switch is used to prevent arcing. At high voltages DC jumps over airgap and starts arc. That switch disconnects at multiple points.

[@benstyles8494]

Spot on, DC is a lot harder the break than AC that by nature has a zero voltage point 100 times a second (we here in the land of Oz have 50Hz mains) making for a easier breaking. The series wiring through the contacts make for bigger gap quickly to ensure it does isolate.

[@MastercraftKARIGAR]

@@benstyles8494 yeh that's the reason we have AC current in use. Easy to break.

[@seebaastian]

Few years a go I designed a few inverters and the hardest part is not software, the hardest part is to have quality coils for the filters. Those coils have to be calculated according your operation frequency. So my very old opinion is that you should not try the 50 Hz inverter on your 60 Hz grid. Keep rocking ;)

[@SuperJohn12354]

the premium inverters have tech to detect arcing, my worry would be the house burning down lol

[@CryianSky]

i have question. I have 4 x160w solar panels. I have 2x 12v 230 a batteries. I have battery charge controller. I have 1000w grid tie inverter. I get electricity through the day from sun up to 300-400w but batteries does not get charged. How can i make batteries get charged for night and only after the batteries is fully charged, then take it for use in house?

[@rontech34]

Not sure if I'm right but the only way to charge them is with a charge controller or a battery charger being your grid tie inverter is connected straight to your panels

[@CryianSky]

@@rontech34 forgot to mention it, yes I have battery charge controller

[@IanDarley]

They put all of those switch contacts in series because it is VERY difficult to break a DC circuit under load without it arcing over the contacts.

[@asus12351]

who sells the danfoss now ? I wend to battery hookup they no longer have it on their site.

[@Danaw0207]

Danfoss is generally Industrial, VFD's for 3 phase motors.

[@airgliderz]

One of many things Danfoss does.

[@jimwhitehead1532]

In the setup video at end, there is no US grid type listed, which is 60 Hz not the Euro 50Hz. What grid type choice should we select here in the US?

[@jehugarcia]

The 60hz versión does have USA in the list