Static Frequency Converter (SFC)

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MAK Solid State GPU

Our solid state GPU units, is now part of our standard Ground support Equipment and is the safest and most reliable solution for aircraft power supply requirements.

Mak's Static Frequency Converter units are designed with Power factor correction to guarantee a perfect sinusoidal input current from 25% to 150% load and a low THDi (<3%)ensuring high quality, maximum efficiency and secure electrical power supplies.

Salient Features

  • CE Mark Certified
  • State of the art semi conductor technology
  • Unity power factor through APFC
  • High efficiency (Up to 95%)
  • Low THDi <2% at linear load
  • Data logging
  • MCU based monitoring and control
  • Green Standby Function
  • Line drop voltage compensation
  • No break power transfer compatibility (NBPT)
  • User friendly control panel
  • IP 54 Enclosures for outdoor use
  • Low noise emission (<65dBA@1m)

Technical Specifications

INPUTS
Voltage : 3 phase 400V/415V AC ±15%
Frequency : 45Hz up to 65Hz± 5%
OUTPUTS
Voltage : 3 phase 200V AC -400Hz ±1%
Overall Efficiency : 87%-95%
Max. Crest Factor : 1.4:1
RECTIFIER
4 Quadrant Operation AC Voltage Range : 25% +10%
Efficiency : 93%-97%
Input Frequency Deviation : ±5%
Overload Capacity : 150% Continuous
Inrush Current : None
Overall current limit : 120% Continuous
MOUNTING CONFIGURATION
FIXED/TRAILER/JET BRIDGE
INVERTER
Static Regulation 0 – 100% load : ± 1%
Dynamic regulation 100% : 5%, recovering to 1%
within 40 ms
Total harmonic distortion : < 2% (Linear Load)
Electronic Limit Overload : 120%@60s;
150%@5s;200%@2s***
Overload Capacity (IGBTs) : 150% Continuous
Frequency stability : ± 0.01% Crystal
controlled
Load power factor : 0-1
Efficiency : 93%-98%
PROTECTIONS
  • Short circuit proof by electric current limiting and shutdown
ENVIRONMENTAL CONDITIONS
Operating Temperature : 0°C to +55 °C
(@100% Load)
Relative Humidity : 10%-100%
Noise Level : < 65 dBA@1 meter
Altitude : up to 2500m without
de-rating
Note: Due to continuous development, the dimensions, layout, configuration and specifications are subject to change without notice.