add1c7ed55

4 pcs of 12 pcs mosfets are shortcircuited. But the inverter is new..dont know why... The gate drivers are ok...all the other circuits seems to be ok. I will change all the mosfets and see what s happening.

Hi all. I have an inverter 11kw Anenji HHS with a problem on battery side. Is new, never installed, when i try to install the battery, the bms show alarm, short circuit. I cant precharge the battery capacitors, and i measured the battery bolts on inverter and is short circuit. Otherwise the inverter works well on Grid and PV, no alarm, only cant see the battery. Pls help me with a electric diagram to find the problem. Thanks

I connected them on parallel. Works well, 50%-50%...different firmware.

Thanks a lot. I have 2 questions. What can happen if i flash the 78.09 on an inverter that comes with 78.07 oem.? I have an inverter with 78.07 and another with 78.09, can i paralelize them to work in parallel? Will work good or will have problems of syncronizing?

@Coulomb hi again. Can modify this 78.08 derate 450v to be parched with 90v block with 200v too? Like 278.07. Thanks a lot. I have a problem with the new pcs of 11kw twin, dont works only with 78.08.

@Coulomb MAXE11K_TWIN_DSP_78.08_derate_at_450V.zip Can modify this with the 90v disable ? To be 278.08 200v without derate ? Thanks

Hi. Can someone modify the firnware 78.08 derate 460v with the blocking 90v disable ? Thanks.

@Coulomb @kuba.cz Hi. I have a problem with a 11kw inverter twin, comes with 78.08 oem firmware, i dont have the modifieded firmware 78.08 without the 90v stuck and derate 460v. I flash the 278.07 on it, and i have a problem with the voltage of battery, it drops when goes under 55v, it have 51v, even real is 54.5v and the inverter lost the serial, has 535555353. I reflashed the oem.78.08 and all is ok. Now i please u, can help me with modify the 78.08 with unblock the 90v and serate 460v ? Exactly like 278.07 that made for me? MAXE11K_TWIN_DSP_78.08.7z

I made some tests, and at 130A cherging, all is ok, general temp is under 40C, and the bus voltage is 455V, only the chopper on mppt board is a little bit hot 45C. The ambiental temp is 18°C. And if i limit the charging i saw that the bus voltage is 475V cause the voltage of pv is bigger.

Thanks. I ll try and come with feedback. Thanks

I can try to set the cherging power to 100A-110A-120A to test? And watch and verify the bus voltage to be under what voltage? This is the single problem? The bus voltage not to go to the upper limit ? Now i.have 475v the bigger ever.

Thanks a lot i have 3 pack of lfp 280ah..its enough. But im working on 18S not 16S, and now i charge to 62v, all is ok now. Do.u think if i will charge at same voltage 62v but with 150A will be too much for inverter ? Too much power and i can deffect it or it doesnt matter ?

Hi @Coulomb, for max 11kw twin, u done to me 278.07 for the 90v problem, to 200v mppt. Can modify that firmware without derating pls ?

This patch have the modification of the 90v stuck ? @coulomb can modify this patch with derate to not block at 90v, for 200v minimum voltage on twice mppts ???

What do u think about the quality of this inverter? Is better than the old one 11k twin ? I installer 3 pcs, it seems be a little less.noisy, more eficient on dc side, and the cooling is better. I dont know the tehnical part