Riello UPS Sentinel Dual SDU

Sentinel Dual (SDU) is a doubly-versatile UPS providing maximum protection to critical loads found in server rooms, electro-medical devices, IT networks and industrial applications.  Install as a 3U rackmount UPS or freestanding tower.

Reduce your power consumption using ECO and SMART ACTIVE modes. Prioritise your most critical loads with EnergyShares sockets that enable easy load-shedding. Load-controlled fans minimise noise disruption(<48 dBA).

  • Installation flexibility (3U rackmount or freestanding tower)
  • 95% operating efficiency (ON LINE mode) reduces energy waste
  • Parallel up to 3 UPS for extra capacity or redundancy
  • Easy to maintain with user-replaceable hot-swap batteries
  • Designed to handle non-linear loads so ideal for blade servers

Riello UPS Sentinel Dual SDU Information

Available as either a floor-standing tower or rackmount UPS, the Sentinel Dual SDU offers unity power factor, simple plug and play installation, and a variety of energy-saving modes of operation.

This single-phase ON LINE UPS has a power range of 4-10 kVA, with up to three units parallelable to provide either additional capacity or redundancy.

Its capability to handle high-density, non-linear loads makes it an optimum solution for mission-critical server rooms and IT networks, plus electro-medical devices and industrial applications.

As an advanced online dual conversion UPS, the Sentinel Dual SDU not only protects equipment from blackouts and power failures, but it filters and stabilises the mains supply to minimise the risk of other disturbances.

Operational efficiency can reach up to 95%, load-dependent digitally-controlled fans keep the noise levels below 48 dBA, and advanced components are designed to perform even at stress-inducing temperatures of 40 °C.

Select between numerous modes of operation that either boost performance or reduce energy consumption:

  • ON LINE Mode: maximum load protection and output voltage quality
  • ECO Mode: maximum efficiency up to 98% as the load is powered by the mains only
  • SMART ACTIVE Mode: UPS automatically decides what mode to run depending on the stability of the incoming supply
  • STANDBY OFF: the UPS can be selected to function only when the mains power supply fails
  • Frequency Converter operation (50 or 60 Hz).

For the most mission-critical applications, several hours’ extended runtime is achievable either by adding extra battery packs or thanks to chargers with greater power. Overall battery performance is enhanced with both automatic and manual testing, with the batteries themselves hot-swappable and user-replaceable without interrupting the critical load.

Interruption-free maintenance is available using the optional external bypass, while the system is fully compatible with PowerShield³ communications software, allowing the monitoring and safe shutdown of all connected devices. Equipment can also be prioritised through EnergyShare sockets that enable load-shedding.

  • Versatile tower of rack-mount style UPS with user-friendly plug and play installation
  • Unity power factor
  • Up to 3 SDUs can be operated in parallel
  • Operating efficiency up to 95% (in ON LINE mode)
  • Range of programmable operating modes (i. e. ECO mode, SMART ACTIVE)


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