SENTINEL DUAL is the high-density version of the Premium Pro range of double-conversion on-line UPS.SENTINEL DUAL is designed to power critical loads such as servers, storage systems, telephone equipment, medical systems and industrial applications.The UPS is ideal for Blade servers with an input power factor close to Unity (1). The UPS has can be used as tower UPS or within a rackmount cabinet, and takes up only 2U in height.SENTINEL DUAL has a modern design, choice of functional formats, and represents the state-of-the-art technology from the Riello UPS research & development team. The UPS can achieve an on-line operating efficiency of 92%.

For critical business continuity applications requiring long runtimes, SENTINEL DUAL can be installed with battery extension packs (ER models) with their own internal battery chargers to maintain sensible recharge times.The UPS also incorporates the Riello UPS ‘power-off’ function found in other ECO Line UPS. Premium Dual is designed to save energy when no loads are connected.


Model Power Active Power Input Voltage
SDH 1000 1000 VA 900 W 220-230-240 Vac
SDH 1500 1500 VA 1350 W 220-230-240 Vac
SDH 2200 2200 VA 1980 W 220-230-240 Vac
SDH 2200ER 2200 ER  VA 1760 W 220-230-240 Vac
SDH 3000 3000 VA 2700 W 220-230-240 Vac
SDH 3000ER 3000 VA 2400 W 220-230-240 Vac



Nominal voltage 220-230-240 Vac
Voltage range without battert intervention 140 Vac < Vin < 276 Vac @50% LOAD / 184 Vac < Vin < 276 Vac @ 100% LOAD
Maximum permitted voltage 300 V
Nominal frequency 50/60 Hz ±5Hz
Power factor > 0,98
Voltage tolerance 200 – 253 Vac
Frequency tolerance Frequency selected (from ±0.5Hz to ±5Hz configurable)
Overload Times 125% for 4 seconds, 150% for 0,5 seconds
Nominal voltage 220-230-240 Vac selectable
Voltage distortion < 2%
Frequency 50/60 Hz selectable
Static variation 1%
Dynamic variation ≤ 5% in 20 ms
Waveform Sinusoidal
Crest factor 3:1
ECO and Smart Active Modes
Type VRLA AGM maintenance-free lead based
Recharge time 2-4 hours

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