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Riello Master Plus HT 250kVA Online 400V (UPS) (No Internal Batteries) - MHT 250
- Available to pre-order.
- ETA will be advised upon ordering or call us on 0800 978 8988 for leadtime.
Alternative Product
We have such a wide range of products that we need to discuss your requirements to give you a range of solutions best chosen to fit your needs. Please call our team of experts on 0800 978 8988 to discus alternatives, lead-times and specifications.
- Description
MHT 250 Overview
The Master HP range guarantees power quality and maximum resilience for applications including data centres, electro-medical devices, IT and telecommunications networks, and industrial loads.
A three-phase online UPS system using advanced double conversion technology to protect against power failures and deliver a filtered, stabilised supply, it comes in 9 power ratings from 100-600 kVA.
Delivers efficient performance even with partial loads. Intuitive system automatically selects the most suitable and efficient operating mode based on mains input quality.
Features
- Up to 8 Master HP can be installed in parallel for extra capacity or redundancy.
- Delivers quality power in mission-critical environments like data centres, telecoms networks, security systems, electro-medical devices, and industrial applications.
- Automatically selects the most efficient operating mode based on mains input quality.
- Operating efficiency up to 98.5% in Smart Active operating mode
Other Configurations
Model Features MHT 250 Standard Master Plus HT 250kVA UPS with a 0.9 Power Factor. MHT 250 NBP Does not include a static bypass MHE 250 Unity power factor 250kVA UPS MHE 250 NBP Does not include a static bypass - Technical Data
INPUT Rated power 250000 VA Voltage 400 Vac three-phase Voltage tolerance + 20% – 25% Frequency 50/60 Hz with autorange Frequency tolerance 45/65 Hz Power factor 0,99 Input current 352 A Current distorsion <3% Soft start 0-100% in 10 BY PASS Rated voltage 400 Vac three-phase selectable 380 and 415 Voltage tolerance 15% (selectable from 10% to 25% from front panel) Rated frequency 50/60 Hz (autorange) Frequency tolerance 2% (selectable from 1% to 5% from front panel) Rated current 352 A Number phases 3 Back-feed protection yes Overload capacity Inx10ms 14 OUTPUT and INVERTER OUTPUT Rated power 250000 VA Active power 225000 W Number phases 3 + N Crest factor (Ipeak/Irms) 3 : 1 Waveform Sinewave Dynamic stability 5% in 5 ms Frequency same as the input (autorange) Voltage distortion with distorcing load <3% Voltage distortion with linear load <1% Frequency stability 0,05% on mains failure 2% (selectable from 1% to 5% from front panel) with mains supply present Inverter efficiency at rated load 95 % Overload 125% 150% 200% of the rated current for 10′ / 1′ / 7 RECTIFIER OUTPUT Ripple <1% BATTERIES Type Maintenance-free sealed lead-acid Maximum recharge current 0.2xC10 ENVIRONMENTAL Altitude max 1000 m Color Dark grey RAL 7035 Remote controls EPO and bypass Safety compliance EN 62040-1:2008; EN 62040-1/EC:2009; EN 62040-1/A1:2013 and Directive 2014/35/EU EMC conformance EN 62040-2 and Directive 2014/30/EU Protection rating IP20 Line-Interactive/Smart Active efficiency up to 98,5% Noise (at 1 m) 63 dBA at 1 m Remote signals voltage free contacts (mains power failure, UPS on bypass, end of discharge pre-alarm, output 12Vdc 80mA) Operating temperature 0 40 C Relative humidity 95% no condensing DATA Weight 1000 kg Dimensions (h w d) 1900x1000x850 mm - Onsite Maintenance
Onsite Maintenance is as easy as 1, 2, 3, 4. Contact us for further information 24×7 on our sales number.
1: Plug and Play (400-3kVA) – Extended Warranty Contracts from 1 to 5 years from £5.99 per month ex VAT
For plug & play UPS Critical Power offers you a full range of distributed service packs. These competitively priced turn-key solutions optimize your UPS performances and enhance the availability of your equipment while meeting your financial constraints and technical requirements.
Warranty Plus Extends your warranty up to 3 years, next working day replacement 
Warranty Plus Extends your warranty up to 5 years, next working day replacement Intervention, Provides one preventative maintenance visit, planned visit Battery Plus, Provides replacement batteries to site, next working day replacement Warranty One Extends your warranty up to 1 year, next working day replacement 2: Hardwired (4kVA Upwards– Onsite Maintenance Contracts from 1 to 5 years from £49.99 per month ex VAT
No matter what, your UPS, Generator, Cooling, Switchgear or Electrical Hardware must be ready to perform at all times. While every power solution we supply is backed-up by a comprehensive warranty with the manufacturer, maintenance plans to ensure business continuity are highly recommended, particularly for UPS systems from 1kVA. In particular, the battery set is of prime importance, and must be in good working order. With other consumables, such as fans and DC capacitors requiring regular maintenance and inspection logs reviewed to predict potential future problems.
Services Included
Silver Level
Gold Level
Platinum Level
Technical Hotline 24/7 Yes Yes Yes Preventative Maintenance Yes Yes Yes Remote Monitoring 24/7 Yes Yes Yes Firmware Upgrades Yes Yes Yes Emergency Response Yes Yes Yes Labour Yes Yes Yes Parts Yes Yes Yes Monthly Event/Status Report option option option Onsite Crash Kit option option option Response Time 12 working hours 8 working hours 4 clock hours 3: 24×7 Remote Monitoring Contracts from 1 month to 5 years from £29.99 per month ex VAT
Remote monitoring of UPS, Generators, Air Conditioning, Site Access and Environmental Systems is essential to allow swift offsite investigation of fault reports and real-time monitoring of the site status, allowing the correct response to be created and dispatched to site.
Engineer Installation and configuration during normal hours 24×7 flexible status and remote monitoring. Encrypted communication, allowing safe offsite monitoring Alarms and events emailed and SMS texted automatically Firewall Friendly Cloud based status overview and multiple sites status on one screen Allows First Fix Response to Site 4. IR Thermal Imaging Surveys – Infrared electrical inspection. Infrared electrical testing finds hot, dangerous problems quickly. Infrared electrical inspections find hot spots caused by defects in connections and components.
Detect system overloads, loose defective components and damaged switchgear. Infrared electrical testing finds hot, dangerous problems quickly. Infrared electrical inspections find hot spots caused by defects in connections and components.
Infrared thermography is used to find areas of excess heat (caused by increased resistance) so that problems can be corrected before a component fails, causing damage to the component, creating safety hazards and productivity loss. Because increased heating is a sign of failure, infrared is the best diagnostic tool available for finding these hot connections in the early stages of degeneration.
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Our brands
Shown below is a small selection of some of our customers we have helped through understanding clients challenges and implementing our unique approach to helping clients built around: listening to our clients, understanding the challenges they face and providing a range of options which compliments their requirements. Our aim is not to sell products but provide solutions with the help of our in house Power Consultants and Electricians.
