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Haefely MAG 100 Power Frequency Magnetic Field Test Equipment per IEC 61000-4-8 View larger

Haefely MAG 100 Power Frequency Magnetic Field Test Equipment per IEC 61000-4-8


  • Up to 110A/m field strength
  • Different coil sizes available
  • Exactly as defined in IEC 61000-4-8
  • Sturdy construction
  • Horizontal and vertical testing possible

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Test Equipment Description

The Haefely MAG 100 is to be used for EMC Tests requiring AC Magnetic Fields. Power frequency magnetic fields are generated by AC current flowing in conductors. The normal 50/60Hz mains power cord is a good example, although currents with other frequencies may be present dependant on the application.

Magnetic fields may interfere with equipment operated in close proximity. Typical EUTs are monitors of all kinds. The Haefely MAG 100 has a 1m x 1m square, single turn antenna. A current of 120A is needed to feed the coil to produce a field of 100A/m. MAG 100 includes a current transformer capable of delivering 120A from a low current source. Magnetic field strength is defined at the center of a coil with 3dB variation.

Magnetic field is orthogonal to the coil plane. Coil dimensions define the maximum EUT size as being 0.6m x 0.6m x 0.5m. The MAG 100 can be used for both vertical and horizontal plane testing, by simply rotating the coil antenna in its mounting on the (optional) stand.

Haefely MAG 100 Specifications

  • Input Voltage range 0 - 230V
  • Output Voltage range 0 - 1.2V
  • Output Current range 1 0 - 13A
  • Output Current range 2 0 - 130A
  • Maximum EUT size 0.6 x 0.6 x 0.5m
  • max field 1m x 1m coil 110 A/m
  • Input connection 10A IEC
  • Weight approx. 17 kg

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