

High-efficiency three-phase transformer-based UPS with IGBT rectifier, unity output power factor (kW=kVA), galvanic isolation and up to 99% ECO Mode efficiency. Ideal for data centers, industrial loads, e-medical and emergency applications.
The Riello Master HE is a high-efficiency, three-phase online double-conversion UPS designed for large data centers, industrial processes, and critical infrastructure. Its cutting-edge power electronics deliver class-leading efficiency combined with low input current distortion and unity input power factor.
Available from 100 to 800 kVA in a single frame and expandable in parallel, the Master HE is well suited to Tier III data centers, healthcare campuses, and large industrial facilities where both availability and energy cost matter.
| General Data | |
|---|---|
| Power Range | 100 - 800 kVA |
| Output Power Factor | 1.0 (kW = kVA) |
| Topology | Online double conversion VFI-SS-111 |
| Parallel Configuration | Up to 8 units (N+1) distributed or 7 with MSB |
| Input | |
| Rectifier Type | IGBT rectifier |
| Input Power Factor | 0.99 |
| Input Current Distortion | < 3% |
| Galvanic Isolation | Complete via output isolation transformer |
| Performance | |
| Efficiency (ON LINE) | Up to 95.5% |
| Efficiency (Standby ON) | Up to 99.4% |
| Overload Capacity | High overload capacity |
| Hot System Expansion | HSE supported |
| Features | |
| Battery Care | STEP-UP/STEP-DOWN converter, ripple-free |
| Smart Grid | SmartGrid ready with ENERGYMANAGER |
| Operating Modes | ON LINE, ECO, SMART ACTIVE |
| Compatibility | Lithium and Supercaps compatible |
| Communication | |
| Monitoring | NETMAN 208, MULTICOM 302/352/411/421 |
| Software | PowerShield3, PowerNetGuard |