Ojo!! Lo que no te cuentan de los Voltronic

I've detected during startup tests that the RCD doesn't work in battery mode. Leakage currents are limited to approximately 15 mA, which prevents the 30 mA RCD from tripping. In Bypass mode, there's no problem, as it connects the input to the output, being single-phase, and operation is correct. The unit is a 5 KVA Voltronic Axpert VMIII. There's no information on this matter. I must have discovered something that no one knew about, and that specialized forums told me wasn't possible... It could be that the inverter's output transformer provides galvanic isolation and is behaving this way. I haven't found any technical information, nor how to configure the output for single-phase when the power source is DC (panels or battery). I've made another video, the second part, after investigating, since nothing is written and the manual doesn't say anything... (you know how Chinese manuals are). Because the RCD not tripping in the first instance is alarming... Best regards.