Overview
High-capacity three-phase online protection at data-center scale.
The 120KVA Online Transformerless UPS has three-phase input and three-phase output and uses a 3-level inverter topology to reach efficiency of up to 95.5%. As the highest-capacity model here, with an output power factor of 1.0, it is built for the largest critical loads, and parallel operation lets you scale well beyond a single unit.
Why this 120KVA UPS
- Online transformerless design with 3-level inverter topology: efficiency of up to 95.5%, for lower energy losses and running costs.
- Three-phase input and output (3P/3P): protects three-phase loads and fits standard commercial and industrial supplies.
- Wide input voltage range 138-485Vac (phase voltage 80-280Vac): stays on mains through severe voltage swings, with no derating when input voltage is 305Vac or higher.
- Output power factor 1.0: more real power (kW) from the same kVA rating, so you can support more load without oversizing.
- Supports 100% unbalanced load: keeps output stable even when load across the three phases is uneven.
- Handles inductive and capacitive loads: high adaptability, including full inductive or capacitive load.
- Input power factor up to 0.99: efficient mains draw and less harmonic stress on your supply.
- VRLA and lithium battery compatible: use sealed lead-acid or lithium batteries to suit your budget and runtime needs.
- Parallel redundancy, up to 6 units: scale capacity or add fault tolerance as your facility grows.
- Shared battery support in parallel systems: units in a parallel system can share one battery bank.
Who it's for
Data centers, large industrial plants, hospitals, and telecom hubs that need maximum single-unit three-phase capacity and efficient, scalable protection.
Backed by manufacturer warranty and Taiyonex support.

