KSTAR EPOWER industrial transformer-based UPS 10–800 kVA 3:3

Technical specifications

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

The double-conversion scheme with input and output isolation transformers galvanically separates the load from the grid. For industrial sites with noise and phase imbalance this matters a lot. The range splits into two groups, 10–80 kVA and 100–800 kVA, both with a three-phase input and output (3:3). On the 10–80 kVA models an overload of 110% lasts 60 min, 125% lasts 10 min, and 150% lasts 1 min. Up to six UPS units can be connected in parallel to add capacity or redundancy. The design complies with IEC EN 62040-3. It is installed at substations, process lines and control panels, where a load failure costs more than the UPS itself.

How to choose

Power is chosen by the active load in kW, bearing in mind the 0.9 factor at the output. If you need headroom for inrush currents, look at the overload curve. For critical consumers install several UPS units in parallel, up to 6. When transformers are not needed and size and efficiency matter, compare with the UD at 10–80 kVA or the high-frequency YDC3300 at 10–200 kVA.