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Master VDC

Master VDC

UPS Solutions

Flywheel UPS

Master VDC is a scaleable system comprised of one or more UPS units and VDC or VDC-XE flywheels. Master VDC is ideal for modern ECO targeted data centres looking to achieve the lowest possible PUE ratios and highest levels of reliability.

Master VDC UPS provide a number of advantages over more traditional batteryequipped systems including: up to 99% efficiency, a compact footprint (up to 50% reduction), lower Total Cost of Ownership (TCO) and almost instantaneous recharge times.

A single flywheel module provides sufficient runtime for the start-up of a local standby generator to power the UPS, which then provides a continuous quality power supply.

The entire system can be scaled for reliable power (N+x) and increased runtime via the parallel operation of several UPS and/or flywheel modules (and a small battery pack if required, for additional reliability).
In a standard configuration (1 x UPS and 1 x flywheel), the runtime available is more than sufficient to allow the UPS to ride through short breaks in mains power.

Flywheel VDC e VDC-XE
Thanks to their extremely high levels of reliability, the VDC series of flywheel energy storage systems provide UPS with a secure and reliable source of power that forms the first line of defence against interruptions to the mains power supply; a fundamental defence for all mission critical applications.

The VDC flywheel systems are fully independent standalone devices. They are designed for applications such as data centres, hospitals and industrial installations.
They provide a clean source of back up power by converting the kinetic energy stored within a rotating mass into electrical power using a built-in IGBT-based converter.
VDC flywheel systems are available in two models, VDC standard and VDC-XE, which is able to provide superior performance for very short and very high power discharges.

VDC series flywheels store kinetic energy in the form of a rotating mass (spinning at 36,000 RPM) within a vacuum-sealed container. The VDC build technology includes a rotor made from aerospace-grade steel, a high speed permanent magnet motor/generator and contact-free magnetic bearings that levitate and sustain the rotor during operation with no mechanical friction.
These technical features allow VDC models to achieve very high levels of efficiency.

Technical Specifications

Technical Specifications:

MODELSMHF 100MHF 120MHF 160MHF 200MHF 250MHF 300MHF 400MHF 500MHf 600
Nominal Voltage380-400-415 VAC three phase
Frequency45-65 Hz
Power factor>0,99
Harmonic current distortion<3% THDi
Soft Start0-100% in 120 sec (selectable)
Frequeny tolerance ± 2% (selectable from ± 1% to 5 % front panel)
Standard equipment providedBack feed protection; seperable bypass line
Ripple currentZero
Recharge voltage compensation-0.5Vx° C
Nominal power (KVA)100120160200250300400500600
Active power (KW)90108144180225270360450540
Number of phases3+Ν
Nominal Voltage380-400-415 VAC Three plage + N
Static Stability ±1%
Dynamic stability ±5% in 10ms
Voltage distortion<1% with linear load/<3% with non- linear load
Crest factor3:1 lpeack/lrms
Frequency stability on battery0,05%
Frequency50 or 60 Hz (selectable)
Overload110% for 60′; 125% for 10′;150% for 1′
Weight (kg)65670080091010001400170021002400
Dimensions (WxDxH) (mm)800 x 850 x 19001000 x 850 x 19001500 x 1000 x 19002100 x 1000 x 1900
Remote signalsdry contracts (configurable)
Remote ControlsESD and bypass (configurable)
CommunicationsDouble RS232 + dry contacts + 2 slots for communiation interface
Ambient temperature0 ° C/ +40 ° C
Relative humidity<95% non-condensing
ColourDark grey RAL 7016
Noise level at 1 m63-68dBA70-72dBA70 dBA70 dBA
IP RatingIP 20 (others on request)
Smart Active Efficiencyup to 98,5%
StandardsSafety: EN 62040 -1 (directive 2006/95/EC); EMC: EN 62040 -2 (directive 2004/3108/EC)
Classification in accordance with IEC 62040-3(Voltage Frequency Independent) VFI – SS- 111
Moving the UPStranspallet


Maximum Power300 KW
Max. Energy Storage4000 KWs6000 KWs
Flywheel rotation speedfrom 36750 to 24500 rpmfrom 36750 to 1400 rpm
Reharge Voltage400-600 VDC
Reharge Current15-50 A (adjustable)
Discharge voltage400-520 VDC (adjustable)
Voltage stability+/- 1%
Voltage ripple≤ 2%
Ambient temperature -1O°C / +40°C
Relative humidity 90% non-condensing
ColourDark grey RAL 7016
Noise level at 1 m ≤ 68 dBA
Dimensions (WxDxH) (mm)762 x 762 x 1872
Weight (kg)821
IP RatingIP 20
StandardsEMC EN 61000-6-4:2001; EMC EN 61000-6-2:2001; Safety EN 60204-1; Directives: 2014/35/EU; 2014/30/EU


VDC-XE 300 KWMHF 100MHF 120MHF 160MHF 200MHF 250MHF 300MHF 400MHF 500MHF 600
Number of FLYWHEELS POWER100120160200250300400500600
1                                     100%4033221595
Number of FLYWHEELS POWER100120160200250300400500600
1                                     75%5445332517115
Number of FLYWHEELS POWER100120160200250300400500600
1                                     50%8268514032251154
Number of FLYWHEELS POWER100120160200250300400500600
1                                     25%160135101806453392623
All runtimes refer to UPS with 0.9 pf and 94% efficiency for 100%, 75% and 50% load, and 92% efficiency for 25% load. With no battery connected