Riello MST 30-T4

Brand: Riello


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30kVA 3 Phase In/Out UPS with six minutes runtime at full load. 

The Riello Multi Sentry 30kVA/27kW uninterruptible power supply from Critical Power Supplies is an on-line double-conversion UPS with a built-in battery pack designed to give 6 minutes runtime at full load. The standard runtime can be extended using additional battery extension packs. The UPS has a three phase input and output. Typical applications: Blade servers, comms rooms, server rooms and datacentres.

Multi Sentry has a very high operating efficiency (94%), high input power factor, advanced battery management and can work in one of several operating modes: On-line, Economy, Smart active and Standby/Off, as well as operating as a frequency converter.



Multi Sentry UPS have been designed for an easy install, especially on sites with limited power capacity available, a generator and harmonic compatibility problems. Typical features include:

- Low input current distortion – less than 3% 
- High input power factor 0.99 
- Power walk-in function to achieve progressive rectifier start-up 
- Delayed start-up on mains power supply return 
- Extended Runtime available upon request

The UPS also acts as a high performance filter to protect its supplies from load induced harmonics and reactive power.

Multi Sentry has a unique battery care system to optimise battery performance, extend working life and guarantee the UPS is fit to deliver its full-rated runtime when called upon to do so – in the event of a complete mains power failure. The UPS is designed to operate with a range of battery types: VRLA AGM and GEL lead-acid batteries including open-vented types, in addition to Ni-Cads.

Specific Battery Care features include:

- One-level recharge to meet the requirements of the most common VRLA AGM batteries.
- Two voltage level recharge meeting the IU characteristic.
- Restricted charging to reduce electrolyte consumption and extend the life of VRLA batteries.
- Temperature compensation: to avoid excessive voltage being applied to the batteries in a high ambient.
- Built-in battery testing to enable predicted failure reports and detect performance degradation.
- Deep battery discharge protection: to prevent over discharging the battery set.
- Low AC ripple current, achieved using a high-frequency battery charger.
- Wide input voltage range, with a rectifier that can work down to less than 40% of its nominal supply rating.

Multi Sentry can be used for a wide range of applications with several customisation options and accessories providing flexibility and a choice of performance levels:

- compatible with capacitive loads – without any reduction in active power (0.9 lead to 0.9 lag).
- multiple operating modes: On-Line, Eco, Smart-active and Stand-By/Off and frequency conversion.
- PowerShare connections for priority-based load shedding on mains power supply failure.
- cold-start facility to allow the UPS to be switched on even without a mains power supply present.
- extended runtime options using battery extension cabinets.
- battery cabinet temperature sensor option to assist the temperature compensating charger.
- larger battery charger options to optimize recharge times.
- dual input supplies options for added resilience.
- isolation transformer options for Galvanic isolation and neutral connectivity.

MST 30-T4 9minutes runtime 440×850×1320 320
Rating: 30kVA/27kW
Runtime: 9m at full load
Dimensions: 440Wx850Dx1320Hmm
Technology: On-line UPS
Format: Floor Standing
Nett Weight: 300Kg
Standard Warranty: 24 months





On 31 October 2019, the four leading broadcast and production houses Gearhouse Broadcast, Hyperactive Broadcast, Input Media and Chief Entertainment owned by Gravity Media Group started trading under the brand name of ‘Gravity Media’. All Gravity Media companies around the world are making this transition and will now go to market as a single brand with a bold new look and purpose.

under 1 roof2

Gravity Media is a leading global provider of complex live broadcast facilities and production services to content owners, creators and distributors. We use the collective pull of our people and resources to capture, craft and create world-class content that inspires and excites.

We are driven by client service excellence, and we never stand still. We’re always looking and listening, keeping up with the latest broadcast innovations – or pioneering them. Above all, we channel our energy into maintaining our reputation for flawless execution, deep technical expertise, and efficient delivery.

Gravity Media is a brand-new company with a 30-year pedigree, a force to be reckoned with formed by the coming together of Gearhouse Broadcast, HyperActive Broadcast, Input Media and Chief Entertainment. Our 500 people serve clients across the sport, media, news and entertainment industries from bases in the UK, Australia, USA, France, Germany and Qatar.

At the centre of Gravity Media lie three broad categories of expertise: media services & facilitiesproduction & content; and equipment rental & sales.

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