Sentryum is Riello UPS’s third generation of transformerless ONLINE UPS. Delivering outstanding performance and up to 96.6% efficiency in a compact footprint, it’s a proven solution for smaller data centres and similar applications.

Available in 10-15-20-30-40-60-80-100-120 kVA versions, the Sentryum improves on our popular Multi Sentry (MST) series and has been developed following extensive customer feedback.

The S3T redefines the concept of flexible power protection by offering four different cabinet sizes to meet the varied needs of small data centres and mission-critical applications.

Fantastic Flexibility

Three different frame types are available for the Sentryum 10-60 kVA/kW power ratings:

Compact (CPT) 

• Footprint less than 0.25 m2 and volume of 0.17 m3;
• 280 mm x 840 mm x 700 mm (W x D x H);
• 1 internal battery string;
• Specifically designed for extremely restricted spaces.

Active (ACT) 

• Footprint less than 0.35 m2 and volume of 0.33 m3;
• 380 mm x 850 mm x 1025 mm (W x D x H)  ;
• 1 or 2 internal battery strings (except for the 60 kVA, no battery inside).

Xtend (XTD) 

• Footprint less than 0.4 m2 and volume of 0.5 m3;
• 440 mm x 840 mm x 1320 mm (W x D x H);
• Up to 3 internal battery strings in a single cabinet;
• Option to add isolation transformer;
• Can upgrade enclosure protection from IP20 or IP21 to IP31.
• Can be equipped with Seismic kit.

A unique frame type is available for the Sentryum 80-120 kVA/kW power ratings:

S3T 80, S3T 100, S3T 120

• Footprint less than 0.42 m2 and volume of 0.67 m3;
• 500 mm x 830 mm x 1600 mm (W x D x H);
• No internal battery string;
• Can upgrade enclosure protection from IP20 or IP21 to IP31;
• Can be equipped with Seismic kit.

Reliable And Efficient

Our transformerless UPS delivers unity power (pf 1) and operating efficiency of up to 96.6%, which helps you minimise wasted energy. It features a unique control system that reduces harmonic voltage distortion (<1% at resistive load and < 1.5% at non-linear load).

The Sentryum can also handle high overloads (125% for 10 minutes or 150% for 1 minute) and short circuits (270% for 200ms or 150% for 300ms), meaning you won’t have to transfer to bypass to deal with sudden peak loads.

Scalable Power

Easily increase your power or battery autonomy by installing up to 8 Sentryum UPS in parallel (3-phase version).

Parallel installations operate on a closed-loop system, so your UPS will keep running even if there’s an issue or disruption with your cable connection.

Enhanced Performance

Sentryum builds on previous Riello UPS transformerless series such as the Multi Sentry (MST), with an optimised card layout that reduces the number of components, cables, and interconnections.

This reduces the amount of installation space your UPS will need and makes it far easier and more cost-effective to maintain.

Power At Your Fingertips

Take control with a 5-inch colour touchscreen display panel which clearly shows real-time information and allows you to easily adjust the operating mode.

Also features an innovative new LED status indicator which automatically changes colour depending on the current operating mode and UPS status. In-built wheels enable easy manoeuvrability.