Sentinel TOWER

Parallelization possible
Up to 3 units can be configured in redundant (2+1) or power parallel. The UPS units continue to operate in parallel, even if the connection cable is interrupted (Closed Loop).

Unit power factor

• More input power
• More real output power (W)

Operating mode selection

The operating mode can be programmed using software or configured manually using the front screen.

• ON LINE: up to 95%.
• ECO Mode: to increase efficiency (up to 98%), LINE INTERACTIVE (VI) technology can be selected to supply less sensitive loads from the mains.
• SMART ACTIVE: the UPS autonomously decides the operating mode (VI or VFI) according to the quality of the mains.
• STANDBY OF: the UPS can be selected to operate only in the event of a mains failure (emergency mode only).
• Frequency converter operation (50 or 60 Hz).

High quality of output voltage

• Even with distorted loads (IT loads with crest factor up to 3:1).
• High short-circuit current on bypass.
• High overload capacity: 150% per inverter (even in the event of a mains failure).
• Filtered, stabilised and reliable voltage: ON LINE double conversion technology (VFI according to EN62040-3 regulations) with filters to suppress atmospheric disturbances.
• Power factor correction: UPS input power factor close to 1 and sinusoidal current absorption.

Simplified installation

• The UPS can be connected to both single-phase and three-phase STW 8000 and STW 10000 networks.
• Output terminal block + 2 IEC sockets for powering local equipment (computers, devices, etc.).
• Easy positioning (integrated wheels).

High battery reliability

• Automatic and manual battery testing.
• Battery management is essential to ensure the correct operation of the UPS in emergency conditions. Battery Care System is a series of functions and services that optimise battery management to obtain the best performance and extend operating life.
• Battery life can be extended indefinitely using battery cabinets;
• The batteries do not intervene in the event of a mains failure <20 ms (high waiting time) or if the input power supply is between 184 V and 276 V.

Low impact on the network
Sinusoidal absorption of input current on single-phase/single-phase series.

Extended autonomy
Optional battery extension modules can be connected to extend the autonomy of the UPS. In addition, the Sentinel Tower series includes ER versions without internal batteries and more powerful controlled 6 A battery chargers for extended autonomy.

Other features

• Advanced diagnostics: status, measurements and alarms available on the new custom LCD display.
• Low noise level (< 45 dBA): for installation in any environment, thanks to its high switching frequency inverter and PWM ventilation with digital control depending on the load applied (> 20 kHz, value above the audible threshold).
• Auto-restart (automatic when mains power is restored, programmable via software).
• Standard backfeed protection: to prevent backfeed to the mains.
• Digital UPS update (internal flash memory).

Advanced communication

• Compatible with Riello Connect remote assistance.
• Advanced, multi-platform communication for all operating systems and network environments: PowerShield³ shutdown and control software for Windows 10, 8, 7, Hyper-V, 2019, 2016, 2012 and earlier operating systems, Mac OS X, Linux, VMWare ESXi, Citrix XenServer and other Unix operating systems;
• RS232 and USB serial ports.
• Plug and play function.
• Port for installing communication cards.