MI 3121 SMARTEC Insulation Continuity

Single-functional testers

The MI 3121 SMARTEC Insulation / Continuity is a tester for dead testing of electrical installations. With both an analogue and digital representation of the results, the instrument ensures accurate measurements up to 2000 Ω on continuity and up to 30 GΩ on insulation function. Configurable limits enable a PASS / FAIL evaluation of test results, which is accompanied with the bright red and green indicator lights for comfortable use even in the dark conditions. The MI 3121 is equipped with a built-in charger and has a magnetic holder in order to free up hands for testing. All the results can be quickly saved on the instrument and then downloaded via the optional A 1291 EuroLink PRO or A 1290 EuroLink PRO Plus software for evaluation and professional report generation after testing. The MI 3121 SMARTEC Insulation / Continuity performs continuity, insulation AC voltage and frequency measurement tests.

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Standards applied

Building LV Installation

  • EISinsp Competences: Low Voltage Electrical Installation Safety Inspection
  • EISc Competences: Low Voltage Electrical Installation Safety for Contractors and Maintainers
  • IEC/EN 60364 Electrical Installations for Buildings series
  • IEC/EN 60364-6 Electrical Installations for Buildings - Verification
  • IEC/EN 61557 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - series
  • IEC/EN 61557-1 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements
  • IEC/EN 61557-2 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
  • IEC/EN 61557-10 Electrical safety in low voltage distribution systems up to 1 000 v a.c. and 1 500 v d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 10: Combined measuring equipment for testing, measuring and monitoring of protective measures
  • VDE 0413 (IEC 61557) Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - series
  • AS / NZ 3018 Electrical installations - Domestic installations
  • CEI 64.8 V4 rated electrical equipment not exceeding 1,000 VAC and 1,500V DC current

Earthing and lightning protection 

  • LPSinsp Competences: Lightning Protection of Buildings Inspection
  • LPSc Competences: Lightning Protection of Buildings for Contractors and Maintainers
  • IEC/EN 61557-4 Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connection and equipotential bonding

Instrument safety towards user

  • IEC/EN 61010-2-033 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters and other meters for domestic and professional use, capable of measuring mains voltage

EMC safety

  • IEC/EN 61326 Electrical equipment for measurement, control and laboratory use - EMC requirements - series

Properties

Measuring functions

  • Insulation resistance with DC voltage;
  • Continuity of PE conductors with 200 mA test current with polarity change;
  • Continuity of PE conductors with 7 mA test current (continuous measurement) without RCD tripping;
  • TRMS voltage and frequency.

Key features

  • Insulation range: wide range of insulation test voltages from 50 V to 1000 V, measuring range up to 30 GΩ.
  • Analogue scale and digital LCD: measuring results are displayed both in numeric and analogue representation.
  • Downloadable: downloads via RS232 or USB cable directly to the PC with the help of the optional software.
  • Upgradeable: if changes occur to the regulations upgrades can be made to the firmware to keep the instrument up to date.
  • Polarity swap: automatic polarity reversal on continuity test.
  • Built-in charger & rechargeable batteries: instrument has a built-in charging circuit and comes complete with a set of rechargeable NiMH batteries.  
  • Custom limits: if limits are set on insulation or continuity function then large green and red lights of the LEDs will indicate a PASS or FAIL evaluation of test result.
  • Easy to use: large bright LCD display and large buttons enable easy handling of the instrument (even while wearing gloves).
  • Magnetic holder: magnet for fixing instrument on metal surfaces enables hands-free operation.

Technical data

  • Dimensions (w x h x l): 140 x 80 x 230 mm
  • Mass (without accessories): 0.80 kg

Applications

Preventative maintenance

  • Earth continuity and insulation testing
  • Voltage measurements
  • Frequency measurements

Specifications

Software

Downloads

Datasheet Language Version Release Notes Type Size Download
PC SW EuroLink PRO en 1.0 13.03.2014 pdf 915.07 KB
MI 3121 SMARTEC Insulation / Continuity en 1.0 19.01.2011 pdf 367.59 KB
Manual Language Version Release Notes Type Size Download
MI 3121 SMARTEC Insulation / Continuity en 1.2.5 07.09.2022 20 751 246 pdf 1.28 MB Login
MI 3121 / MI 3121H Multi-Language 2023 20.01.2023 zip 2.71 MB Login
DoC Language Version Release Notes Type Size Download
EU Declaration of Conformity Multi-Language 06.07.2023 QR code External link Unknown
PC Software Language Version Release Notes Type Size Download
SW 0101 EuroLink PRO (EU) en 4.38 18.01.2022 Readme zip 60.59 MB Login

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