INW Series grid-interactive hybrid inverter, 3.3–10.5 kW

Export changes the design

Once an inverter can export, the utility's requirements arrive with it: a grid code, an anti-islanding test, a power factor setting, and often a limit on export current. The INW carries those settings in firmware, selected at commissioning from a country list.

Mechanically, the INW is the outdoor-rated version of the INV platform — IP54 instead of an open chassis, with a sealed cable entry and a UV-stable cover. That lets it mount on an outside wall next to the array rather than in a plant room.

Generator hybrid

On sites with a diesel generator, the INW uses the generator as a charge source rather than a permanent supply: the generator runs at its efficient point to charge the battery, then stops, and the inverter supplies the load from the battery. That cycle typically cuts fuel use by 30–50 % against continuous generator running, and it cuts engine hours, which is the larger maintenance cost.

Parallel and phase balance

Up to nine units parallel on one phase. On a single-phase supply that is usually done for capacity, but it is also done for resilience: three units in parallel, one fails, the site keeps running at reduced capacity.