AEVA Forums

OK, not wanting to interrupt, just had a message from Eric at mppSolar, his reply in red: I have a query about the maximum solar current on the input side. The manual gives 5000w as maximum power and you give the mppt range of 120v to 450v, but the manual doesn't give a maximum current. Ampere rati...

Hi
Some people connect the output neutral of an inverter to the main neutral line they put a jumper wire between input neutral and output neutral. And load of house is supplied by single live wire.will this harm inverter?what are drawbacks of this wiring?

If it was just that the voltages are low, I'd suspect the source resistors and components back to the Isense input (R205, R215, R225, C82), or possibly U10 itself. That sounds more like an overload somewhere, that is dragging the power supply down, and it eventually collapses. That would be hard to...

Vissie wrote: ↑Tue, 08 Sep 2020, 17:46 Hi
Can anyone tell me the function of U21. Op amp OP07.

OP07 IC is for current sensing if it is faulty you will get over current fault.also check the three smd capacitors c185,c192 and c181 and two L44 smd double diodes.once i resolved the fault57 by replacing c181.

Hi In my lab i receive many inverters (Axpert vmiii 3kw having maximum VOC 500volt) with fault 09 (bus soft start fail) i saw the problem was in MPPT side of inverter, the components which were faulty are as follow 1). 3845 8pin dip ic 2). BG30 dip mosfet 3). 8120 dip diode 4). 41-0705521-01G. trans...

For the first time I have a need to charge my batteries via generator but for some strange reason my 3024GK is not accepting the input from generator. It recognises the the voltage and frequency and there is an icon of current on the inverter screen but there is no charging icon and bypass icon. Ha...

Hi every one I have installed 5kw inverter having 120 to 450 vdc, i have installed 12 solar panels of 440wp in two strings,my inverter mppt blown away ,the supplier said that this inverter has mppt of 18A max and your solar produces amperes than 18amp(10+10),is this ampere increase ,the reason of th...

Hi I have axpert Vmii 5kw(PIP 5048 GE,max500 voc) inverter , i want to connect lithium ion battery ( Vision 100Ah) with this inverter now i have some questions. 1) Is communication cable must in this case 2) if yes then ,which communication cable I should use 3) What should be my inverter settings f...

Hi every one I have an axpert vmii 3kw (PIP-5024GE) inverter. I repair its DC-DC side,Bus side and inverter proper side.with all drivers.for the first time when i turn ON it with only batteries it blew up the two transistors 1020 and 2655 near IC SG3525. I repair it again and turn it ON,now during s...

I have axpert king 3.2kw inverter, it starts normal but upon 500watt load it shows fault code 52.i replace the bus side IGBTs with new ones but shows the same fault.any body please how to solve this? So fault code 52 is "bus voltage too low". I suggest the next step is to measure the bus voltage, a...

Hi
I have axpert king 3.2kw inverter, it starts normal but upon 500watt load it shows fault code 52.i replace the bus side IGBTs with newones but shows the same fault.any body please how to solve this?

Hi every one i hope all of you will be fine,Please stay home and be safe from covid-19
I have a problem in my vmiii 3.2kw inverter .when there is low load it share with battery and drain battery .when load is increased it is ok. How i can resolve this problem?

Please some one explain axpert inverter setting no 12 and setting no 13 , how to set these values for different types of batteries and does the values of setting 12 and 13 effects setting 26,27 and 29?

Vissie wrote: ↑Wed, 12 Feb 2020, 16:19 The reason why this IGBTs blew was because there was a blown miniature resistor(R220) on one of U3 (SG3525) outputs.

Is this R220 a 10ohm resistor? In my PCB there is no components numbering on back side. Please share photo of that part if possible.

I googled J3 and Bc diodes but that left me in the dark Googlre images shows J3 smd diodes as 18V zeners. Is that correct? I cant find much on BC diodes Do you have the diode values if zeners or the diode names that must be replaced? Can this faulty components cause the 2 left hand side IGBTs to bl...

Good day Its been a long time since I asked questions here. I tend to repair every Axpert 5KVa I lay my hands one. The more fets and IGBT's blown the easier But every now and then one comes along with hardly any blown components and they are the terrible ones to repair I got this one today. Fault c...

Please explain battery equilization,equilization time,equilization time out and what should be their values in setting 30 to 36 for tubular and flooded batteries.

Linked in series the open circuit voltage would be 248vdc, depends on the inverter but if it is a PiP MS inverter the open circuit limit is 145vdc. You could connect 2 of the 38v Voc panels in series plus one of the 48v Voc panels ( 124vdc Voc) and the other 3 panels the same, then connect both str...

weber wrote: ↑Thu, 06 Feb 2020, 05:41 I'm guessing the "K100" are Toshiba TK100E08N which are 3.4 mΩ 80 V. The Texas Instruments CSD19505KCS are 3.8 mΩ 80 V.
Those MOSFETs should be fine. There is no need to upgrade to a higher voltage rating.

Yes Sir these are K100E08N1

weber wrote: ↑Thu, 06 Feb 2020, 05:05
Are the two 1000 µF capacitors connected in parallel with the four 4200 µF capacitors?

Sir the two 1000uf capacitors are connected in parallel with 4200uf capacitors.

Hi every one.I have vmii 5kw inverter and 6 no of pv panels 4 of them are 275wp(voc 38v imp 8A) canadian solar mono and 2 are 400wp(voc 48 imp 9.8A) risen mono perc.If i connect them in series will be there any power loss due to unmatching between them?will i get the same power as matched pv panels?...

weber wrote: ↑Mon, 03 Feb 2020, 14:52 I know your replacement MOSFETs are CSD19505, but I ask for the third time, what was the part number of the original MOSFETs?

Most inverter comes with original mosfes K100 and some comes with csd19505.this one was with csd19505.

@Roman khan, This is my suggestion to replace the 4 x 4200 µF capacitors: https://www.digikey.com/product-detail/en/united-chemi-con/EKZN500ELL332MM40S/565-4081-ND/4843891 Thanks for your kind help once again. Sir these capacitors are 35v 3300uf on my inverter and you have recomended 4200uf 50v, Wi...

Text on 1000uf 35v capacitor.

@weber
Some more pic
The three 35v 4200uf capacitors are in line near battery fuse 150.negitive side of capacitor is connected to the source of mosfets csd19505.the positive side of capacitor is connected at secondry side of transformer.which has 0 resistance with drain of mosfets 19505.