Riello UPS Sentryum S3T 10 ACT T4 – AH27UT

Riello UPS Sentryum S3T 10 ACT T4 (AH27UT) – 10 kVA Online UPS with internal battery storage

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The Riello UPS Sentryum S3T 10 ACT T4 (AH27UT) is an advanced transformerless online double-conversion UPS that combines maximum reliability, energy efficiency, and flexibility. With a power rating of 10 kVA, this UPS always delivers full capacity regardless of the load type, making it ideal for data centers, server rooms, industrial applications, and other critical environments where continuous power supply is essential.

The Sentryum series represents the third generation of Riello UPS systems and has been developed with latest technologies, including digital signal processors, three-level IGBT inverters, and resonant control. This results in an efficiency of up to 96,5%, minimal impact on the power network, and optimal protection for the connected equipment.

The Riello UPS 10 kVA is the reliable online UPS solution for emergency power supply in server rooms.

Key Features:

Power: 10 kVA
Technology: Online double-conversion (VFI-SS-111) according to IEC EN 62040-3
Efficiency: Up to 96,5% in online mode / up to 99% in Smart Active mode
Cabinet (Active – ACT): 380 x 850 x 1025 mm, footprint 0.35 m²
Battery configuration: 1–2 internal strings of 40 batteries
Overload capacity: 125% for 10 minutes / 150% for 1 minute
Short-circuit withstand: 270% for 200 ms / 150% for 300 ms
Communication: USB, RS-232, programmable inputs/outputs, expandable slots (SNMP, network cards)
Display: 5″ colour touchscreen with clear LED status indicator
Ease of use: Compact design, built-in wheels, and intelligent fan control

Applications

The Riello Setntryum 10 ACT T4 is ideal for:

Small and medium-sized data centers
Server and IT infrastructure
Industrial and medical applications
Critical processes where downtime is not an option

Benefits:

Maximum availability: Full 10 kVA output, even under heavy or capacitive IT loads (e.g., blade servers)
Smart battery management: Supports VRLA, AGM, GEL, NiCD, Li-ion, and supercapacitors, ensuring optimal lifespan and performance
High efficiency: Low operating costs and reduced heat generation
Intuitive operation: Large color touchscreen and color-coded status indicators for quick diagnostics

The Riello UPS Sentryum S3T 10 ACT T4 offers a balance between energy, reliability, and flexibility. Thanks to its transformerless technology and smart battery features, it is the ideal UPS for organizations that require absolute certainty in their power supply.

Brand: Riello UPS
Item number: AH27UT
Size: 380 x 850 x 1025 mm, footprint 0,35 m²

Technical information±

Models	S3M 10 ACT
INPUT
Rated power	10000 VA
Voltage	380 / 400 / 415 V three-phase + N – 220 / 230 / 240 V single-phase + N
Voltage tolerance	230 / 400 V ±20% @ full load (for wider tolerance conditions apply)
Frequency tolerance	40 – 72 Hz
Power factor	0.99
BY PASS
Rated voltage	220 / 230 / 240 V single-phase + N
Voltage tolerance	From 180 V (adjustable 180-200) to 264 V (adjustable 250-264) referring to neutral (Ph-N)
Rated frequency	50 or 60 Hz (selectable)
Frequency tolerance	±5% (selectable)
Number phases	1 + N
OUTPUT and INVERTER OUTPUT
Rated power	10000 VA
Active power	10000 W
Output current	48 (bypass) A – 43 (inverter) A
Number phases	1 + N
Crest factor (Ipeak/Irms)	3 : 1
Waveform	Sinusoidal
Static stability	±0.5%
Dynamic stability	EN 62040-3 class performance 1 non-linear load
Frequency	50 or 60 Hz
Voltage distortion with non-linear load	≤1.5%
Voltage distortion with linear load	<1%
BATTERIES
Type	VRLA AGM/GEL/NiCd/Li-ion/Supercaps
Type of charging	One level, Two level, Cyclic recharge (selectable)
ENVIRONMENTAL
Color	RAL 7016
Communication	UPS status led bar – Graphic touch screen display – 2 slots for communications interface USB – RS232 – Contact interface with 5x opto insulated Input and 4x Output relays
Protection rating	IP20
Line-Interactive/Smart Active efficiency	Up to 99%
Noise (at 1 m)	<40 [dBA ±2] (SMART ACTIVE)
Remote signals	voltage free contacts
Operating temperature	0 °C – +40 °C
Relative humidity	5-95% non-condensing
Standards	European directives: LV 2014/35/EU low voltage; EMC 2014/30/EU electromagnetic compatibility — Directive and Standards: Safety IEC EN 62040-1; EMC IEC EN 62040-2; RoHS compliant — Classification in accordance with IEC EN 62040-3 VFI – SS – 111
DATA
Weight	72 kg
Dimensions (h w d)	1025x380x850 mm