Flyzet

If someone have the same issue, i checked dependency PV power and PV voltage when significant drops occurs and you can clearly check on screenshots that than power drops happen at the same time when PV voltage became less than 240 V in my case it's 237.5. So, if we check inverter label it's clearly says that "full load MPPT range is 240-450 V". So, the main issue probably that MPPT controller can't handle such loads when MPPT full load range drops below 240V. Later, I will try to add more 2 panels 545W and i believe that this will resolve my frequent drops PV power.

Hi everyone. I have the same problem but with Powmr POW-HVM PRO 6.2M-48V. But it's only fluctuate when SUB mode enabled and when at export to grid, in SBU mode works flawlessly without drops, and PV power always at highest point(SBU). My setups is 6x545 Longi solar(Short-circuit current 13.92 A, Open circuit voltage 49.65 V). Please check PV current, voltage, and power production on attachments(it's sunny day without clouds). Hope some one can explain such behavior. Thanks

Hello Everyone. Purchased about half year ago this unit POW-HVM PRO 6.2M-48V. All connected respectively with line, neutral, ground in and out. I am expiring some weird issue on both output modes SBU and SUB. I have 3 phases after my electricity meter. 1. In SUB mode voltage on out and in seems fine 230 volts. Let's say i have Loads 2 kWatt and PV load also 2 kWatt, from grid it's consume about 150-200 watts, which is ok. But constantly every 15-30 sec PV drops to about 1.2-1.5 kWatt and grid consume respectively 150-200 + different's 500-700 watts, and after it's works good, and cycling again. The same situation when i tried to export all load back to the grid. One of my friends have 4.2 unit without this issue. 2. In SBU mode here is my voltages between: AC IN-OUT neutral-neutral - 120 volt AC IN-OUT live-live - 115 volt AC OUT neutral-ground - 117 volt AC OUT live-ground - 117 volt AC OUT live-neutral - 230 volt AC IN neutral-ground - 0 volt AC IN live-ground - 230 volt AC IN live-neutral - 226 volt AC OUT neutral-IN live - 344 volt If ground disconnected from inverter the voltage between grounds 117 volt Also, almost all light are flickering a bit in SBU mode(SUB not flickering) If i check with phase detector in socket of my house it's shows like i have 2 Phases(but lights on both with lower light as usual), in SUB mode it's lights only one phase and much brighter. I have 2 grounds outputs, one on box and another near AC IN (please see attachment). Maybe it's related to wrong connections neutrals and ground? I would very appreciated if some one can guide me in right direction to resolve those issues.