WattPower has introduced its 506KTL grid-forming inverter, a 506 kW string inverter designed for utility-scale solar projects.

The Indian manufacturer said the inverter is designed to help engineering, procurement and construction (EPC) companies and renewable energy developers meet evolving grid-code requirements while supporting stable plant operation.

The transformerless inverter supports a maximum DC input voltage of 1,500 V and features six maximum power point trackers (MPPTs). Each MPPT can handle up to 105 A of input current and a maximum short-circuit current of 180 A, with support for up to six PV inputs per MPPT.

The inverter has a maximum efficiency of 99.1% and a European efficiency of 98.8%. Its nominal AC output voltage is 1,000 V, with a nominal output current of 242.5 A and a maximum output current of 292.2 A.

WattPower said the 1,000 V AC architecture can reduce the number of inverters required for utility-scale projects and associated balance-of-system costs. The company said the inverter’s grid-forming capabilities can also improve plant availability and help reduce lifetime operating costs.

The inverter measures 1,065 mm × 800 mm × 400 mm and weighs 130 kg, including the mounting plate. It has an IP66 protection rating and C5-Medium corrosion protection. Its operating temperature range is -25 C to 60 C.

According to WattPower, the inverter incorporates AI-enabled monitoring and plant optimization functions, along with a hybrid cooling system for thermal management. It also features an anti-icing fan and the company’s SSLD2 protection technology, which WattPower said is designed to improve equipment safety, operational reliability and plant availability.