RSP

I have an Invinisolar 10KW 3 phase inverter. Input maximun 900V DC . I looks like i have to disconnect the panels and test them individually.

Good day , i presently have 16 x 450W Sunmagic panels installed (single string). I live between Parys and Vanderbijlpark and the panels are mounted a few degrees west of north at a 26 degree slope .The manufacturer claims 49,8 V open ciurcuit and max output at 41,4V . I measure 640 V max open circuit and max power out at around 3 Kw . I believe this is under spec or this a realistic output ? Any advise please

I have a 10kw Infinisolar coupled to Pv,grid and a 10kw battery. Sometimes only during night time when the grid goes off the inverter fails to switchover to battery .The inverter goes off. Starting the inverter it powers up and changes over to battery power.Any advise please

Hi what is the neutral to earth voltage on the essential load .What type of supply do you get from the grid ?

The way I understand is that the panels should be earthed on the frame only.The negative and positive from the panel(s) are isolated from earth.The DC from the panels through the electronics couples to the AC without any galvanic ie no transformer in the circuit .If you ground either the + or - of the PV panels the result will be a short circuit in the inverter and cause damage .The PV panels therefore should have no leakage current between the + or - to the frame .This is the reason why the manufacturer stated no leakage from the panel to the frame.Trust that this makes sense

Just to add . after a few requests ,on different platforms ,the factory did not respond . I found a lady who works at Meritsun Power and after a a few messenger and Whatsup messages she referred me to the "supplier" I bought the BMS from and stated that they do not have an installation manual The BMS landed in South Africa and for now it appears unknown .The BMS is fitted with another card SST-19-039 rev 1.7 . I now assume this is a Blue Tooth card with Protocol BLE 4.0 Any assistance will be appreciated

BMS Meritsun 15s 100A installation manual required.I bought batteries with the BMS disconnected .Seller and factory did not respond to requests