Solar-FAQ-news-DIY
10+Pallets OEM On-Grid Solar inverters shipped
3MW solar rooftops by our 20KW on-Grid solar inverters
Coordinated control of dozens on-Grid PV inverters in parallel
During the non-isolated/transformerless inverters in parallel, there is a direct coupling relationship between the inverter circuits, and distributed parameter impedance inside transmission lines.
Glad to launch New Solar Pump VFD and IP65 All-in-One inverters!!!
As promised in 2020, now we are glad to notice we launched New Solar Pump VFD with IPM(intelligent power module) and IP65 All-in-One solar pump inverters 2.2KW-30KW! (IP54 45-132KW available too)
Hundreds On-Grid Solar inverters delivered
Hundreds On-Grid solar inverters 5-20kw shipped! 5th generation 5kw-8kw 1phase On-Grid solar inverters are with die-casting aluminum unibody,online trouble-shooting WiFi! nearby local monitoring by APP!!! Google Map in APP now!
Solve ISO or insulation fault of Solar PV System
Before connecting to electricity Grid, our On-Grid solar inverters measure the insulation resistance of solar panels strings compared to ground. If the insulation resistance measured by the inverter is less than 1000 kohm, the inverter does not connect to the grid and alarms ISO fault. The causes may be:
Damaged PV panels.
Junction boxes of the panels not properly sealed, so allowing water and/or damp seepage.
Problems in the connections between panels (not perfectly connected).
Poor quality cable junctions.
Presence of unsuitable (trigger voltage lower than the characteristics of the PV generator strings) or damaged overvoltage surge arresters outside the inverter in the DC section.
Presence of damp inside the field panel (damp increases leakage and can therefore be the cause of a reduction in insulation resistance)