Simulation Software EFC-400

Computation of low frequency electric and magnetic fields

EFC-400 calculates electromagnetic fields using a practically unlimited number of network elements such as conductors, line segments, buildings, and antennas. The software features fast computing speed, ease of use, and efficiency. Users can create all the needed network elements themselves or import them. The software puts all the elements together with the simulation result in an easily interpreted graphic display.
EFC-400 has been the quasi standard for the industry since 1995, with references from clients worldwide. Users include energy network operators and their planning departments, consulting engineers, railroad companies, regulatory authorities and the environmental departments of local government agencies.
EFC-400 was originally developed for determining field exposure levels caused by power supply equipment (overhead lines, transformer and switching stations) - including noise emissions and RF interference levels due to corona discharge.
The EFC-400 Telecommunication is a separate module for computing the radiation exposure due to transmitters and telecommunications equipment emitting high frequency radiation.

For more information on the Simulation Software EFC-400, contact your local Air-Met office. 
  • Industry standard for low frequency simulation since 1995
  • Maximum strength performance from calculation speed, ease of use, and the practically unlimited number of network elements 
  • Maximum cost-effectiveness in use, as users can create and import the necessary network elements themselves
  • Principal users: Energy suppliers and their planning departments, consulting engineers, railroad companies and network regulation authorities 
  • Import and interpolation of measurement data 
  • All network elements are visible: 3D display ? “What you see is what you get”
Magnetic Field Computation
  • Calculation of RMS and peak values and components
  • Time-dependent field components
  • Automatic computation of ground conductor currents 
  • Slack span height by classification of segments 
  • Frequency range 0 to 30 kHz
Geometric Objects
  • Maximum 2,000,000 conductors
  • Maximum 100 power supply and overhead lines
  • Maximum 1,000 masts 
  • Maximum 100 isolated masts 
  • Maximum 200,000 buildings 
  • Maximum 200,000 blocks 
Computation Types 
  • Maximum 32,000 x 32,000 points 
  • Computation along a straight line in space 
  • Computation across an area in space 
  • Z axis profile series
  • Dynamic interpolation of data points 
  • Test according to Kirchhoff’s law
Object Editing
  • Clear, simple entry of geometric data 
  • Move, rotate, and insert functions for geometric data
  • Reusable conductor sections
  • Poly-line elements, coils, etc.
  • Library with mast and railroad profiles
Data Display
  • X, Y, Z axis diagrams
  • 2D contour line diagrams
  • 3D surface diagrams 
  • Conductor representation 
  • Statistics, histograms
  • Average, L05, L50, and L95 values
  • Zoom function
Support for Power Supply Lines
  • Mast library
  • User defined masts
  • Automatic mast segmentation 
  • Replacement of masts in lines 
  • Editing of mast types in lines
  • System voltage or individual phase voltage
  • Entry of AL/St/CU conductors
  • Phase optimization
  • Conductor temperature taken into account
Integrated Tools
  • Editor, calculator 
  • Paint tool
  • DXF object filter
Computation of Electric Field
  • Up to 100,000 load segments 
  • Ground effects
  • Gauss-Jordan or Sparse Matrix Inversion
  • Effects of masts and buildings
System Requirements
  • 500 MB RAM, HD 20 GB free space 
  • Maximum 3.000.000 points/sec (PentiumTM, 3 GHz)
  • 32-bit runtime version for external computation
  • Batch job available Integrated data compression User interface configuration User defined colors
  • Supports True Color graphics
Data Interface
  • Upload of terrain profiles
  • Import of experimentally determined data
  • Import of maps in DXF, PCX, JPEG, BMP and TIFF formats
  • DXF export of contour lines, shadings and geometric bodies 
  • ASCII export (EXCELTM  readable format)
  • Export of 4D color surfaces
  • Export / import of dBaseTM and ParadoxTM files
  • Bitmap, WMF, JPG, html and CD export


  • Construction planning
  • Network upgrade planning