Inside Look KD 600w Grid Tie Inverter




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Nik Jakotic: Got a similar unit back in 2013, worked well until now, red error light comes on, stays on. turn off & on, green light comes on for a second or two, then the error light (red) comes on. Two 30 amp fuses are intact. Saw your vid on opto-couplers, PC817 (same, & in same place), & just now this vid. The seller has since moved on to something else, however, another knows & has confirmed they are not in business but provided an image that supports your video, their board is a bit different , my zeners are on the bottom side of the board, & the DC side 3 legged thingys are not to-220 (larger grey units). D1,D8 on my unit are U2060G D24 is 2060CTR MUR (these three are next to / same side as the 4 AC Fets F30NM60D). Might be a problem with RF8 & F1 {but will change all 4 AC Fets, F1 {T5- 250v 5A}, & the 2 PC817s,) can`t do the surface mount bits with out a heat gun attachment of which I don`t currently have, so I hope when the bits arrive, that will sort it.
My board version:
SY-MGI-500W A3
DATE: 2013-09-12
REV 03
KQ.ZHOU
Here is a few images of unit & a picture with instructions from another seller/manufacturer.
http://s59.photobucket.com/user/arcturian/library/inverter600watt {hopefully the images are accessible}
Thanks for the vids & all the best.

ali jamali: very good

Alan Sumner: Simple that center transformer is burned up i can see it from here

Shahid Iqbal: Hey Roger.i buy a new 24v 600watt from ebay. as i installed with batteries,display FAULT+LOW.even batteries are full charge.i also check with 33v 10A power supply but same error.Please help to resolve the problem.Thanks.

mrbf1951: Hi Roger,
I have a 300Watt unit with D1=U2080G, D24=MUR2080CTR. Would you please help me to find out cross replacement number for a brand name product? Thanks a lot.

Dario Rossetto: hi, would know tell me where and 'posizzionato the heat sensor of this type of inverter

Ed Roehr: 1000w kd blowing the on circut board 10 amp fuse.. Is this the problem you had ? If so what was your fix..

Erivaldo Soares: this inverter came defective china ?

Erivaldo Soares: good morning friend, is to send me the electronic esquama this drive

Lovindu Wijesinghe: Hi Roger:

Do you have the schematic of this grid tie inverter circuit?

Dominik M: Did You still have this inverters? Could You make some photos and description of the logic and driver ICs? Cheers

Steven T: do you know what alternative mosfet i can use to replace the hy1906p in these?

Charley Yost: I have the 600w 12v in 120v out model. The cooling fan will not turn on. Fan tested good but will not turn on.


CHRCLMNKY: Hi Roger, we have similiar inverter but mine's 600w/60hz/22-60VDC/220VAC

It gives around 60% efficiency (readings measured by Kill A Watt) during the first use, but after just a month of usage, efficiency drops to 30%!!!! I think it has to do with the low quality MOSFETS used by the manufacturers in China.

Can this be still repaired perhaps and boost its efficiency more than to 85%?

Thanks and Regards
Ike from the Philippines

Roger Foster: that is the problem with all of these, they never sync to the mains, I actually had one working for a short while a couple of times. I replaced both optocouplers (the two small squarish 4 pin chips) on the board in front of the transformers. I then had the green light flickering continuously at a different rate than when it was flickering and going to fault, also during this new flicker rate the input voltage was going low & high & the inverter was outputting about 60w I think from 200w of panels. output should have been 120 to 160w

I also found that if I switched the inverter on at the switch it would still do the ST / FAULT flicker but if I left the switch on & plugged in the extension cord at the wall outlet it would start to work for a while as described above before it would go back to the ST / FAULT flicker. next I will try adjusting the trimmer pot on the board to see if it keeps it on if that does not work I will try changing the double diode IC's on the AC rails & perhaps the AC mosfets & see if that solves it. 


here is the latest that I have done with it.

http://youtu.be/5eodfWbxFyM

Mark G.: Hey Roger… thanks for uploading this video.  Do you know what the leds normally do.  I just got one and connected it up in fairly low light (500W total in solar panels).  The red fault LED comes on for about 4 seconds, then the green LED flashes very quickly for about 2 to 3 seconds, then repeat.  Maybe calculating MPPT?  Thanks in advance.

Shaun Dobbie: That trimmer pot seems to control the maximum power voltage of the inverter. You can adjust it so that the inverter can be powered from a 24v battery without destroying itself. Great for running at 500w at night to help with cooking the tea.

77300d: I have a 600w one 220v unit. Their is info on the board. (SY-MGI-500W A3  Date:2013-10-14 Rev 03)
funny says 500w on the board. sticker says 600w
Was working great until a f&c%ing lizard got inside via the fan when it was off for the night. Turned it on..zap..BBQ lizard and my new inverter.  His head was on the MUR2060CTR and tail on the B- post. I cant for the life of me find any info on the MUR2060CTR. ON Semiconductor's logo is on the chip. Their site turns up nothing, I email them, and they say it's not made by them.. China knock-off??

I live in a very remote place, and had to ship this unit in (taking 2 mo) so I sure would like to fix it !  The local electronic shops have never seen anything like this inverter before.. it is a 3rd world country, so that does not shock me. Any advice sure would be great.   THANK YOU.

Ed Roehr: Did you ever find out what the VR by the led lights control.

Butch Gamet: I have two 600 watt greenergy grid ties and they have no load on them (no amps draw with amp meter)when they run the green lights are running thought but no output to my watt meter, and idea what is wrong?
Rating:
inside look KD 600w grid tie inverter 5 out of 5

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Brittnie Preuitt: jazz is the best transformers he's my fav rip jazz
Nik Jakotic: Got a similar unit back in 2013, worked well until now, red error light comes on, stays on. turn off & on, green light comes on for a second or two, then the error light (red) comes on. Two 30 amp fuses are intact. Saw your vid on opto-couplers, PC817 (same, & in same place), & just now this vid. The seller has since moved on to something else, however, another knows & has confirmed they are not in business but provided an image that supports your video, their board is a bit different , my zeners are on the bottom side of the board, & the DC side 3 legged thingys are not to-220 (larger grey units). D1,D8 on my unit are U2060G D24 is 2060CTR MUR (these three are next to / same side as the 4 AC Fets F30NM60D). Might be a problem with RF8 & F1 {but will change all 4 AC Fets, F1 {T5- 250v 5A}, & the 2 PC817s,) can`t do the surface mount bits with out a heat gun attachment of which I don`t currently have, so I hope when the bits arrive, that will sort it.
My board version:
SY-MGI-500W A3
DATE: 2013-09-12
REV 03
KQ.ZHOU
Here is a few images of unit & a picture with instructions from another seller/manufacturer.
http://s59.photobucket.com/user/arcturian/library/inverter600watt {hopefully the images are accessible}
Thanks for the vids & all the best.

Max Goes crazy: 2:15how to do that?
Карина Саидова: Да объявление OLX что же наше полиция не как не примут меры смешно им только так дай денег иди домой
Squishball 572: Pls make a hitachi 465
ivan martinez: whats your xbox live name
Jani g: Stellt euch das alles mal mit Steinen vor .... was den wohl noch Laufruhe ist .......

inside look KD 600w grid tie inverter