Sineng Electric’s SP-510K-H is a 510 kW high-power string inverter for utility-scale solar projects, featuring 1,650 V DC input, 1,000 V AC output, six MPPTs, and support for DC/AC ratios up to 1.8. The inverter delivers up to 99.0% efficiency, grid-forming capability for weak grids, AI-based O&M functions, and operation at altitudes up to 4,000 m.
Chinese manufacturer Sineng Electric has introduced the SP-510K-H, a high-power string inverter for utility-scale solar projects.
Built for project block configurations exceeding 7 MW, the inverter measures 1,210 mm x 900 mm x 413 mm and weighs 135 kg. It supports a maximum DC input voltage of 1650 V, enabling longer string layouts—adding two to three additional modules per string—to significantly reduce mounting structure and balance-of-system (BOS) costs.
On the AC side, the inverter has a 1,000 V output rating to reduce line losses and supports aluminum cabling and power line communication (PLC) to further lower BOS costs.
The transformerless inverter offers a maximum efficiency of 99.0% and a European efficiency of 98.8%. It features six maximum power point trackers (MPPTs) supporting up to 36 strings and allows a DC/AC ratio of up to 1.8.
