June 12, 20223 yr Hi guys , again with a question .... I was about to make the grounding for the panels when one page in the manual hit me ... and this seem to be on all Voltronic licensed products. WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single crystalline and poly crystalline with class A-rated and CIGS modules. To avoid any malfunction, do not connect any PV modules with possible current leakage to the inverter. For example, grounded PV modules will cause current leakage to the inverter. When using CIGS modules, please be sure NO grounding. My inverter is grounded and the rest of the installation also , I was only missing the panels and I made separate ground point for them and I was about to hook it up. So ... errrr ... should I not ground my panels ? ... or what should I understand from this ?
June 13, 20223 yr 8 hours ago, Jaxone said: Hi guys , again with a question .... I was about to make the grounding for the panels when one page in the manual hit me ... and this seem to be on all Voltronic licensed products. WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single crystalline and poly crystalline with class A-rated and CIGS modules. To avoid any malfunction, do not connect any PV modules with possible current leakage to the inverter. For example, grounded PV modules will cause current leakage to the inverter. When using CIGS modules, please be sure NO grounding. My inverter is grounded and the rest of the installation also , I was only missing the panels and I made separate ground point for them and I was about to hook it up. So ... errrr ... should I not ground my panels ? ... or what should I understand from this ? 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
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