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Master HP (100 – 600 KVA)

Master HP (100 – 600 KVA)

On Line UPS

The Master HP series from 100 to 600 KVA is the Riello UPS solution for installations requiring high energy efficiency and maximum power availability. Master HP Series provides maximum protection and power quality for data centres and industrial loads. The UPS has an IGBT-based rectifier, DSP (Digital Signal Processors) technology and provides true On-line, double conversion power protection, (VFI SS 11 – Voltage and Frequency Independent in accordance with IEC EN 62040-3).


Technical Specifications

Product Brochure

Product Video

Main features:

Maximised cost savings

The Master HP has the ability to monitor the mains input quality and to select the best operating mode based on the interference present (Smart Active mode) or circular redundancy (Parallel Energy Saving mode, which allows the UPS to regulate available capacity based on the immediate demands of the load, automatically switching to standby in the event of excess capacity), the Master HP also offers high levels of efficiency for partial loads, resulting in reduced operating costs.


  • High efficiency (up to 98,5%)
  • Compact size: e.g.: only 0,85 m2 for the Master HP 250 KVA
  • Reduced weight
  • Double load protection, both electronic and galvanic, towards the battery.

The entire Master HP range is suitable for use in a wide range of applications. Thanks to the flexibility of configuration, available options and accessories, it is suitable for supplying any type of load, e.g. capacitive loads such as blade servers etc.

Power supply reliability and availability are ensured for critical applications by distributed or centralised parallel configurations of up to 8 units, for redundant (N+1) or power parallel configurations and all the different configurations offered by the Master MPS range.

Zero impact source

Master HP has a zero impact on connected power sources – grid networks or generators:

  • < 3% input current distortion
  • Input power factor 0,99
  • power walk-in function – to ensure a progressive rectifier start-up
  • start-up delay function – to restart the rectifier when the mains power supply is restored.

Battery care system

Master HP series UPS include a range of features designed to prolong battery life and reduce their usage.

Output isolation transformer

  • Better load protection from DC/Battery problems
  • The UPS can be supplied from 2 independent lines
  • Fault on DC bus will not affect the by-pass availability
  • High Short circuit current
  • Higher immunity to harmonics or energy backfeed generated by the load.

Advanced supervision

Master HP series UPS have a front panel mounted graphic display providing UPS information, measurements, status updates and alarms in different languages, with wave form displays including voltage/current and providing a KWh reading that can be used to measure IT loads and calculate a datacentre PUE (power usage effectiveness) ratio.

Smart Grid Ready

Being smart grid ready, Master HP allows for the implementation of power accumulation solutions, and at the same time ensures extremely high levels of efficiency. It is also able to independently select the most efficient operating method based on the status of the grid. Master HP UPS are also able to electronically interface with the energy manager using the smart grid communication network.

MODELS ΜΗΤ 100 ΜΗΤ 120 ΜΗΤ 160 MHT 200 ΜΗΤ 250 ΜΗΤ 300 MΗΤ 400 MΗΤ 500 MΗΤ 600


Nominal voltage 380 – 400 – 415 VAC three-phase
Frequency 45 – 65 Hz
Power factor > 0,99
Harmonic current distortion <3% THDi
Soft start 0 – 100% in 120’’ (selectable)
Frequency tolerance ± 2% (selectable from ± 1% to ± 5% from front panel)
Standard equipment provided Back Feed protection; separable bypass line


Nominal voltage 360 – 400 – 420 VAC 3-phase + N
Nominal frequency 50 or 60 Hz (selectable)


Nominal power (KVA) 100 120 160 200 250 300 400 500 600
Active power (KW) 90 108 144 180 225 270 360 450 540
Number of phases 3 + N
Nominal voltage 380 – 400 – 415 VAC three-phase + N (selectable)
Static stability ± 1%
Dynamic stability ± 5% in 10 ms
Voltage distortion < 1% with linear load / < 3% with non-linear load
Crest factor 3:1 lpeak/lrms
Frequency stability on battery 0,05%
Frequency 50 or 60 Hz (selectable)
Overload 110% for 60’; 125% for 10’; 150% for 1’


Type VRLA AGM / GEL; NiCd; Li-ion;
Ripple current Zero
Recharge voltage


(-0,5) Vx°C


Weight (kg) 656 700 800 910 1000 1400 1700 2100 2400
Dimensions (WxDxH) (mm) 800 x 850 x 1900 1000 x 850 x 1900 1500 x 1000 x 1900 2100 x 1000 x 1900
Remote signals dry contacts (configurable)
Remote controls  ESD and bypass (configurable)
Communications  Double RS232 + dry contacts + 2 slots for communications interface
Operating temperature 0 – 40 ° C
Relative humidity <90% non-condensing
Colour Dark grey RAL 7016
Noise level at 1 m 63 – 68 dBA 70 – 72 dBA
IP rating IP20
Smart Active efficiency up to 98,5%
Standards Safety: EN 62040-1-1 (Directive 2006/95/EC); EMC: EN 62040-2 (Directive 2004/108/EC)
Classification in accordance

with IEC 62040-3

(Voltage Frequency Independent) VFI – SS – 111
Moving the UPS transpallet









Download the Pdf here






Watch the video here.