Static Frequency Converter (SFC)

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MAK Solid State Ground Power Unit

Our solid state Ground Power Unit / Static Frequency Converter, 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.

STATIC FREQUENCY CONVERTER / SOLID STATE GPU

Static Frequency Converter

Our Static frequency converter is used to supply voltage and load variations. The output frequency is entirely depend on the elements  which is to control the on/off static devices of frequency converters. So it is totally independent of fluctuations in the frequency & AC voltage. static frequency converter is also works independent of load variations. In induction motor frequency converter.The speed variants sometime because of rotor torque but this will be constant through out the speed range designed by Mak Controls and Systems.

Mak Controls manufacture & designed Static frequency converter have very low installation costs, they don’t require any heavy machinery and careful alignment. It occupies less space and offers low noise compared to mechanical converters with heavy machinery and wide variety of voltage for static frequency converters with a great control due to its independence of voltage power supply variations -SFC

Salient Features

  • State of the art semi conductor technology
  • Unity power factor through APFC
  • Better efficiency
  • Low THDi <5% at linear load
  • Data logging
  • MCU based monitoring and control
  • Green Standby Function
  • Line drop voltage compensation
  • No break power transfer compatibility (NBPT)
  • IP 54 Enclosures for outdoor use
  • Low noise emission (<65dBA@1m)
  • CE Certified
INPUTS
Voltage : 3 phase 400V/415V AC ±15%
Power factor full load :0.99
Frequency :45Hz up to 65Hz
Rectification :IGBT based APFC
Current THD :<5%
OUTPUTS
Voltage :3 phase, 200V(L-L) ±1%
Frequency Nominal 400 Hz
Power factor 0.8 – 1PF
Voltage regulation < 1%
Overload 110% for 1 hour, 125% for 5 minutes, 150% for 5 seconds
Power 90 kVA
EFFICIENCY
Overall efficiency >93%
PROTECTION
  • Under Voltage
  • Over Voltage
  • Over Load
  • Under Frequency
  • Over Frequency
  • Under Voltage
  • Over Voltage
  • Over Load
  • Under Frequency
  • Over Frequency
  • Short-circuit
  • Aircraft interlock
  • ENVIRONMENTAL CONDITIONS
    Operating Temperature :-20°C to + 55°C
    Altitude :Up to 2000 Meter without derating
    Noise Level : < 65 dBA@1 meter
    Altitude : up to 2500m without
    de-rating
    MOUNTING CONFIGURATION
    FIXED/TRAILER/JET BRIDGE
    Note: Due to continuous development, the dimensions, layout, configuration and specifications are subject to change without notice.