Sunny Boy SMA SB1700 bench testing a grid tie solar inverter without solar panels

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How to bench test a grid tie solar inverter without solar manels or a dc supply, here's how I do it.
I bought this inverter with some others for small money, about £20 each. In this video I test it to see if it works.
When opening electricals: heed the usual advice when working with live electricity and charged capacitors.
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Опубликовано:

1 окт 2024

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Комментарии : 37

@mattharvey8712 2 месяца назад

Hey.........im new to sma.......the black thing on bottom of the box is a fuse , where they bond nuterial to ground........they are nuterial bonded to ground......that said......don't use auto transformer to make split phase power source ........cheers

@mattharvey8712 2 месяца назад

Bravo.......my dc was rated 550 volts at 10 amp.......needed higher voltage to get signal.......cheers

@BuyitFixit Год назад

I'd be careful using your meter in that way. Measuring continuity with the power on, if the fuse is blown you would potentially sending the voltage across the supply into your meter. When measuring such things, I'd recommend power off first... :)

@bootsowen Год назад

You might have guessed that I know little to nothing about electronics! But help like this is what I need! Thanks. Keep it coming!!

@TheInfoworks Год назад

Owen, another inverter saved. The block in the DC input area is a simple DC disconnect plug that is missing. It connects the 2 terminals together, simple as that. Thanks for the reference to my books, a reference to the variable DC supply would be great, cheers, Andy

@bootsowen Год назад

I tried putting a jumper across the missing plug and it began to initialise, but then it went into a constant waiting mode. which video do you want a reference for and what timestamp. I think I have already put a link in for the solis we were testing on your bench.

@TheInfoworks Год назад

@@bootsowen Owen, been working on the wheel, 3 tries a day, getting there slowly. This is one of my original testing videos: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lBZqqEvjgZU.html Cheers, Andy

@NoName-bs5lf 4 месяца назад

i have one to, but know i have a problem. two strings goes inside, but all 3 leds are on, and they to not switch to working mode. do you have any idea? best regards

@bootsowen 4 месяца назад

If all 3 lights are on what is the error code, what does it say in the manual? Have you looked up the fault list in the inverter software?

@NoName-bs5lf 4 месяца назад

@@bootsowen Initialization All LEDs are on. The Sunny Boy control system is initializing. The string voltage to the inverter is between approx. 85 V and 225 V. The supply is sufficient for the system control and not quite sufficient for feeding to the grid. Data transmission is not possible yet. I put 2 Stings with each 112 Volt(comming out of the cable), so thats mean the inverter have enough power to switch from initialzation to feeding the grid. Or not? Im a homemade man so, im not an expert.. I read in an Artikel the power converter,( some have Lem Hj 15p or CMS2015(25) installed) and this one should be the trouble maker.... Sounds not bad to me......power converter....is transform DC to AC....and there is no power behind DC...So something between is the error....so this sound good to me. ´ What do you think....is there a way to find out? In a way of try and error? best regards and thx for your Answer. i appreciate,-)

@NoName-bs5lf 4 месяца назад

Everythink ist No working, my Panels was to week, my Sunny Boy needs 365 Volt to produce AC. So problem solved

@chrismurphy7324 7 месяцев назад

dont post when you have no ides what you are doing

@bootsowen 7 месяцев назад

Do you know what you’re doing? How do you learn?

@ek8710 Год назад

Just picked up one of the larger units from the local scrap yard for next to nothing, it's also missing the DC isolator but was hoping to test it out before i spend the money on buying a replacement handle isolator from SMA.

@ShadowsNight1000 Год назад

That plug that is missing is a kill switch, just has 2 tabs that link each side, makes sense why it wasn't working :p Electronic Solar Switch | ESS handle replacement part | ESS-HANDLE:01 Just a question about the AC side, I've tried using a cheap inverter that says it's pure sinewave but I don't have a way to tests this and it goes between grid monitor and waiting, is it fine to plug into mains?

@bootsowen Год назад

Have a look at my other solar playlist videos where I show how I test.

@Whereswally606 Год назад

Hilarious, smokey variacs boom. I wonder whether that DC daughter board is to protect the main from transients. And it may have done its job and and sacrificed itself in the role. Edit just read Andys comment yep you need to jump that connector preferably via a proper dc switch

@bootsowen Год назад

I think it was just dust inside burning off, I stripped it down today and it still works, no signs of damage, but lots of dust.

@ianhelsbyservices Год назад

Hi, I see you went to the Andy Reynold's school of artificial source of PV. Are you piping the adjusted output of the variac into the 110v side of the transformer? I tried it straight through once but the circuit breakers recognised it as a dead short. I can only get to 280v DC which isnt quite enough to turn on one of my inverters. I also have a 10kW one bu lt that needs over 400V :(

@bootsowen Год назад

Indeed, pushing the variac into the 110 side, then getting 0-480vac out. not sure that the rectifier can take that much but seems ok so fat on about 150-200v. really the transformer is a handy and cheap way of getting an isolation transformer. I have a little 240-240 isolation transformer, but it won't give the extra voltage. If you disconnect the earth in the transformer it should work.

@bootsowen Год назад

John ward's video is worth a look on the faults that can happen doing this silly stuff!

@bootsowen Год назад

Have you seen the buyitfixit way using a washing machine motor, battery drill and rectifier?

@ianhelsbyservices Год назад

@@bootsowen i will find the buyitfixit video. On testing my directdrive washing machine motor; I spun it with a drill while oscilloscoping the hall effect sensor. Back emf was strong enough to trip the clutch in the drill, lucky as it would have spun out of my hand.

@mattharvey8712 8 месяцев назад

Bravo......guess......gfi....cheers

@windysolar1Planet-Earth Год назад

its a dc solar panels isolater input

@MjwAllMusic Год назад

So the inverter only turns on when a dc voltage is applied on the left side? It won't display anything when ac is only connected?

@bootsowen Год назад

It needs both AC and DC

@stevepr100 Год назад

Hi all, I've a sunny boy sb1700 which when connected to dc/ac msg display says "disconnect ens1, 2 or both" any ideas peeps having no joy with info🙏🤞

@bootsowen Год назад

what does the manual say?

@stevepr100 Год назад

@@bootsowen can't find any lit with that info even on net😕

@stevepr100 Год назад

@@bootsowen thanks for taking notice👌

@bootsowen Год назад

No Idea, why not email SMA?

@stevepr100 Год назад

Found the issue with my inverter... Ribbon cable from master board to board under display was not seated fully.. Another one saved from the tip as even Sma didn't know what issue was💪💪