An Online UPS with a three-phase input and single-phase output converts the balanced threephase power into a stable, single-phase output for smaller loads, featuring a doubleconversion design for high efficiency and a pure sine wave output. Key specifications include a three-phase input voltage range (e.g., 320-460V), a single-phase output voltage (e.g., 230V ±1-2%), a pure sine wave output, a high output power factor (e.g., 0.9 lagging or better), and protections against overload, short circuits, and voltage fluctuations. These units are suitable for critical applications like medical equipment, industrial processes, and telecommunications systems.

High Frequency Online UPS systems are available in both low capacity (e.g., 1-10 kVA) and high capacity (e.g., 10-20 kVA and above) models, with key specifications including True Online Double Conversion Technology for superior power quality, a wide range of input/output voltages (e.g., 220-240V), and communication options like RS232, USB, and SNMP for monitoring and control. They are designed to handle common power issues such as blackouts, over/under-voltage, surges, and harmonic distortion.