MI 3290 Earth Analyser

September 09, 2020


The Metrel MI 3290 Earth Analyser is a portable, battery or mains powered test instrument with excellent IP protection (IP 54 open case), intended for measurement of earth resistance, specific earth resistance and earth potential of various energetic and non-energetic objects. The user can choose between different methods from conventional 3 wire earth resistance measurement up to one or four clamp method for measurement of pylons. They have a choice of measurement methods with different frequency methods: single frequency or frequency sweep from 55 Hz to 15 kHz, HF method with 25 kHz and pulse method simulating the lightning strike. High electrical noise immunity makes this instrument best suited for industrial environment. Instrument is available in multiple configurations which are a combination of different accessories and measurement functions to suit the users application.




  • Possibility of performing all types of earth measurements with a single instrument.
  • Analysis of earth impedance as a function of the frequency due to a wide measurement frequency band (55 Hz ... 15 kHz).
  • Earth measurements on pylons with protective earth cable connected.
  • Measurement on mono towers and 4-leg tower.
  • A wide variety of measuring clamps: from iron clamps to flex clamps with 10 m length.
  • HF-Earth resistance measurement (acc. to IEEE_Std 81).
  • Sweep mode Z(f) on screen.
  • High resolution colour touch screen, 4.3” TFT.
  • Floating Mains (universal 90 … 260 V AC) or battery powered (built in fast charger).
  • High degree of protection: IP 65 case closed, IP 54 case open.
  • Checkbox - different self-check methods.
  • DC resistance measurements.
  • Impulse impedance measurement for simulating the lightning strike.
  • Support for single or automated measurements.
  • PC SW for measurement pre and post processing: preparation of the test structure, result download, tree-view, table view and graphical view, storing and printing.


  • Power Plants
  • Distribution
  • Safety
  • Connections / Bondings
  • Earth Grids / Voltage Funnel
  • Public areas Safety / Quality
  • Fire Safety
  • Telecommunication / Local Area Network
  • Environmental Issues
  • High level electronic fault finding
  • High level industrial testing
  • Construction Sites
  • Railway Systems