Master FC400
Power Range: 30 - 125 kVA
Master FC400 series static Frequency Converters are available from 30 to 125 kVA, with 50 or 60 Hz input and 400 Hz output. The result of extensive experience acquired in the UPS industry, the Master FC400 series is distinguished by the use of technologically advanced components and for excellent reliability, ease of maintenance and ease of operation. The Master FC400 series uses double conversion technology (VFI SS 111 voltage and frequency independent compliant with IEC EN 62040-3), with an integrated output transformer to ensure the galvanic isolation of the load from mains disturbances under all conditions. The output voltage is 208 V threephase (adjustable 200-215 V). Thanks to high frequency IGBT technology and digital control, Master FC400 Frequency Converters are ideal for airport, military and naval applications.
5 models in this range · quoted to order by an authorized Riello UPS reseller


Highlights
- Frequency Converter 50/400 Hz
- Output voltage: 208 V - 3F
- Galvanic isolation
- Applications: airport, military and naval
- Battery backup
Models & ordering
Riello model designations are the order codes. Each model is quoted to order; open a model for its full specification and to request pricing and lead time.
| Model | Rated power | Active power | Dimensions (h w d) | Weight | |
|---|---|---|---|---|---|
| MFC 125 | 125000 VA | 100000 W | 1900 x 800 x 800 mm | 590 kg | Quote |
| MFC 30 | 30000 VA | 24000 W | 1400 x 555 x 740 mm | 330 kg | Quote |
| MFC 100 | 100000 VA | 80000 W | 1900 x 800 x 800 mm | 530 kg | Quote |
| MFC 80 | 80000 VA | 64000 W | 1900 x 800 x 800 mm | 500 kg | Quote |
| MFC 60 | 60000 VA | 48000 W | 1900 x 800 x 800 mm | 480 kg | Quote |
Ships from and sold by A5 IT.
| Input | |
| Voltage | 380 / 400 / 415 V three-phase |
|---|---|
| Voltage tolerance | 400 V ±20% @ full load |
| Frequency tolerance | 45 ÷ 65 Hz |
| Current distorsion | <5% C (HC Version) |
| Soft start | 0 - 100% in 120 sec. configurable |
| OUTPUT and INVERTER OUTPUT | |
| Rated power | 125000 VA |
| Active power | 100000 W |
| Number phases | 3 |
| Crest factor (Ipeak/Irms) | 3 : 1 |
| Waveform | sinusoidal |
| Static stability | ±1% |
| Dynamic stability | ±5% |
| Frequency | 400 Hz |
| Voltage distortion with non-linear load | <4% |
| Voltage distortion with linear load | <3% |
| Overload | 110% for 60 min.; 125% for 10 min.; 150% for 1 min. |
| Environmental | |
| Color | Light gray RAL 7035 |
| Communication | Double RS232 + remote contacts + 2 slots for communications interface |
| Protection rating | IP20 |
| AC/AC efficiency | up to 92% |
| Noise (at 1 m) | 72 dBA |
| Operating temperature | 0 °C - 40 °C (50°C @ 75% load) |
| Relative humidity | 5-95% non-condensing |
| Standards | European directives: L V 2014/35/EU low voltage; EMC 2014/30/EU electromagnetic compatibility -- Directive and Standards: Safety IEC EN 62040-1; EMC IEC EN 62040-2; RoHS compliant -- Classification in accordance with IEC 62040-3 VFI - SS - 111 |
| Data | |
| Weight | 590 kg |
| Dimensions (h w d) | 1900 x 800 x 800 mm |
Characteristics
Minimum impact on mains – easy source
The Master FC400 was designed to reduce to a minimum the impact on the mains or generator located upstream, thanks to the low harmonic content input and the progressive start of the rectifier. These features make the Master FC400 frequency converters especially compatible with generators.
Easy installation and maintenance
The Master FC400 requires a small space for installation (only 0.86 m 2 for a 125 kVA model). The main assemblies of the UPS can be easily accessed for maintenance, via the removable front panel. Fans located in the top of the UPS cabinet, eliminate the need for side or rear access, and allow the UPS to be placed against a wall.
Applications
Master FC400 provides additional protection for a wide range of applications, including:
- Powering airplanes in airports;
- Radar and flight-control systems;
- Naval applications;
- Military applications;
- Power for test benches.






