MI 3155 EurotestXD Featured

Multifunctional testers

MI 3155 EurotestXD is the newest flagship of Metrel’s most advanced line of multi-functional measuring instruments and is designed specifically for testing in industry. What differentiates this instrument from the rest is its ergonomic design and an intuitive user interface, encompassing a memory organizer and fully programmable AUTO SEQUENCEs, managed through a large colour touch screen display. It is fully compliant with functionality standards (e.g. IEC/EN 61557) and other reference standards for testing (e.g. IEC/EN/HD 60364-4-41,...) as is required for any instrument that performs TRMS current measurements, RCD tests, line and loop impedance tests with 3 (and 4) wires and earth resistance measurements. Besides those, the instrument supports a wide range of tests and measuring functions, including on-line voltage monitoring, phase sequence testing, varistor testing, PI/DAR calculation, luminance measurement, discharge time testing, ISFL measurements, IMD tests as well as functional and visual inspections.


Standards applied

IEC/EN 60364

  • IEC/EN 60364 series
  • IEC/EN 60364-6
  • IEC/EN 60364-7
  • IEC/EN 60364-4-41

IEC/EN 60755

  • IEC/EN 60755

IEC/EN 61008

  • IEC/EN 61008

IEC/EN 61009

  • IEC/EN 61009

IEC/EN 61557

  • IEC/EN 61557 series
  • IEC/EN 61557-1
  • IEC/EN 61557-2
  • IEC/EN 61557-3
  • IEC/EN 61557-4
  • IEC/EN 61557-5
  • IEC/EN 61557-6
  • IEC/EN 61557-7
  • IEC/EN 61557-10
  • IEC/EN 61557-11
  • IEC/EN 61557-12
  • IEC/EN 61557-14

IEC/EN 61851

  • IEC/EN 61851

AS / NZ 3760

  • AS / NZ 3760

AS / NZ 3018

  • AS / NZ 3018

AS / NZ 3017

  • AS / NZ 3017

VDE 0413

  • VDE 0413

VDE 0100

  • VDE 0100

HD 384

  • HD 384

BS 7671

  • BS 7671 18th Edition

DIN 5035

  • DIN 5032 P7

IEC/EN 61010

  • IEC/EN 61010 series
  • IEC/EN 61010-1

IEC/EN 61326

  • IEC/EN 61326 series
  • IEC/EN 61326-1

IEC/EN 62752

  • IEC/EN 62752

IEC/EN 62955

  • IEC/EN 62955


Measuring functions

  • Live Transformer’s Impedance Measurement with Four Wire Test;
  • Hi-precision Short Circuit Current evaluation with Calculated Hot factor;
  • 3-wire test of PE (RPE function) without extension lead conductor;
  • Autotest insulation function between L-N, N-PE and L-PE (R ISO ALL function);
  • 4 wire continuity test;
  • Insulation resistance with DC voltage from 50 V to 2500 V and PI, DAR calculation;
  • Varistor test;
  • Continuity of PE conductors with 200 mA DC test current with polarity change;
  • Continuity of PE conductors with 7 mA test current without RCD tripping;
  • 2-wire and 3-wire loop impedance (L-PE) measurement with Trip Lock RCD function;
  • Touch voltage / Contact voltage measurement with external P/S probe.
  • 2-wire and 3-wire high-current loop impedance (L-PE) measurement;
  • 3-wire loop impedance (L-PE) measurement with Trip Lock RCD function;
  • 1-phase / 3-phase TRMS voltage and frequency measurements;
  • Line, loop and RCD measurements at frequency range 16 ... 400 Hz;
  • Phase sequence;
  • Power and THD measurement (up to the 12th harmonic);
  • RCD testing (general and selective, type AC, A, F, B, B+, MI RCD, EV RCD, PRCD, PRCD-K, PRCD-S);
  • Earth resistance (3-wire and 2-clamps method);
  • Specific earth resistance with Ro-adapter (option);
  • TRMS leakage and load currents (option);
  • First fault leakage current (ISFL);
  • Testing of Insulation Monitoring Devices (IMDs);
  • Machine mode support with time discharge;
  • Illumination (option);
  • High resolution Loop impendance (mΩ) (option);
  • EVSE (Electrical Vehicle Supply Equipment) support (option);
  • Determining location of cables (option);
  • QR and/or barcode scanner support (option).

Key features

  • Programmable AUTO SEQUENCEs. *
  • Predefined profile dependent
  • Predefined Automatic tests:
        Auto TT (U, Zln, Zs, Uc);
        Auto TN/RCD (U, Zln, Zs, Rpe);
        Auto TN (U, Zln, Zlpe, Rpe);
        Auto IT (U, Zln, Isc, Isfl, IMD).
  • High resolution colour touch screen, 4.3” TFT
  • Functional inspections.
  • Visual inspections.
  • Custom inspections (visual and functional) which may be incorporated into AUTO SEQUENCEs.
  • EVSE AUTO SEQUENCEs and function inspections.
  • Machine functional and visual inspections.
  • Built-in help screens for referencing on site.
  • Built-in fuse tables for automatic evaluation of the line / loop impedance result.
  • Monitoring of all 3 voltages in real-time.
  • Automatic polarity reversal on continuity test.
  • Automated RCD testing procedure (RCD AUTO).
  • Automated Impedance testing procedure (Z AUTO).
  • Measurement filtering according  to the selected area group.
  • Built-in charger and rechargeable batteries as standard accessory.
  • BT communication with PC, Android tablets and smart phones via built-in BT.
  • PC SW Metrel ES Manager (structure and report creation, data upload/download). *
  • Optional aMESM Android APP (structure and report creation, data upload/download). **

* Available with MESM PRO licence
** Available with EU Set


  • PC SW Metrel ES Manager (structure and report creation, data upload/download).
  • Optional aMESM Android APP (structure and report creation, data upload/download).

Technical data

  • Dimensions (w x h x l): 252 x 111 x 165 mm.
  • Mass (without accessories): 1.78 kg.



  • Power generation
  • Thermal energy power plants

Renewable energy sources

  • Renewable powerplants
  • Hydroelectric power
  • Wind power generation
  • Two clamps method for measuring earth loops in a solar plant
  • Wind generator inverter testing
  • Wind power and car charging stations

Power distribution

  • Power distribution
  • Remote antenna tower earthing resistance
  • Insulation of long cables

Substations and transformers

  • Transformers predictive maintenance
  • Impedance of live transformer and fault currents with hot factor

Installations exceeding 1 kv

  • Insulated or semiconductive walls and floors
  • Specific earth resistance measurement methods
  • Earth leakage relay and fault currents

Earthing and lightning protection 

  • Earthing measurement with fall of potential method
  • 2-clamps method for measuring lightning and earth protection
  • Surge protection devices

Appliance and machine safety 

  • Machines and fixed connected loads safety

Power quality 

  • Effects of power quality issues on living and working environment

Special locations 

  • Wet and outdoor locations
  • IT system
  • DC installations
  • EVSE construction and testing

Low Voltage Electrical Installation Safety

  • Substation electrical safety
  • Mains bonding and touch voltages during fault
  • Switchboards and automatic trip-out protection
  • Public places electrical safety

Hospital earthing and lightning protection 

  • Hospital earthing measurement with fall of potential method
  • Mains bonding and touch voltages during fault current
  • Two clamps method for measuring lightning and earth protection
  • Surge protection devices in hospitals

Power supply and power distribution 

  • Hospital switchboards and automatic trip-out protection

Surgery rooms 

  • Medical IT system
  • Isolated areas RCDs

Patient recovery rooms

  • Public and workspace electrical safety in healthcare
  • Electrical safety in hospital wet areas

Secondary power sources in healthcare

  • Generator safety
  • Ambulances
  • Field hospital



Download File Language Version Release Notes Type Size View Download
Datasheet MI 3155 EurotestXD en 2017 09.08.2018 pdf 1.28 MB
Datasheet Ion SDK and Black-Box protocol en 2020 07.10.2020 Brochure pdf 835.94 KB Login
Manual MI 3155 EurotestXD en 1.8.9 22.09.2020 20 752 716 pdf 9.37 MB Login
PC Software Metrel ES Manager Multi-Language 30.04.2020 Readme zip 237.97 MB Login
Images MI 3155 EurotestXD en 28.02.2020 zip 851.41 MB