MI 3242 MicroOhm 2A

Continuity testers

MI 3242 MicroOhm 2 A is a portable low resistance ohmmeter used to measure low resistances of switches, relays, connectors, bus bars, power distribution cable joints, motor & generator winding, power transformers, power inductors, rail track joints, wire and cable resistance, welding joints for industrial application, etc., with test current up to 2 A.

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MI 3242 Standard set

Instrument MI 3242 MicroOhm 2A
Test cable with Kelvin probe
Test cable 4 wire, 2.5 m
Crocodile clip, 4 pcs (2x black, 2x red)
Test probe, 2 pcs (black)
Power supply adapter
1.2 V NiMH rechargeable battery, 6 pcs
RS232 serial cable
USB cable
Soft carrying bag
PC SW HVLink PRO
Instruction manual
Calibration certificate

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Optional accessories

Standards applied

Earthing and lightning protection

IEC 62305 Protection against lightning - series

Electrical Energetics

EEA Competences: Electrical Energetic Installations with Automatic Trip-Out Ability
IEEE C57.12.90 Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
ASTM B 539 Standard Test Methods for measuring Resistance of Electrical connections (Static Contacts)
NMEA AB 4-2009 Guidelines for Inspection and Preventive Maintenance of Molded-Case Circuit Breakers Used in Commercial and Industrial Applications
El Real Decreto 223/2008 Regulation on technical conditions and safety guarantees in high voltage power lines and their complementary technical instructions ITC-LAT 01 to 09

Earthing and Grounding

EES Competences: Electrical Energetic Systems Earthing and Grounding Safety

Electrical switchboards safety

IEC/EN 62271 High-voltage switchgear and controlgear - series
IEC/EN 62271-1 High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
IEC/EN 62271-100 High-voltage switchgear and controlgear - Part 100: Alternating current circuit-breakers

Properties

Measuring functions

Bidirectional resistance measurement from 1 μΩ up to 199,9 Ω with test current up to 2 A.

Key features

Four measuring modes: Automatic, single, continuous and inductive.
Automatic thermal EMF elimination: with automatic bidirectional measurement.
Accurate: 1 µΩ best resolution with 0.25% accuracy.
Noise rejection: 50 Hz / 60 Hz ripple detection and rejection.
Battery powered: more than 800 measurements of 500 mΩ load ∞ 2 A test current & 15 s measurement duration.
Safe: High overvoltage protection (CAT III / 600 V) allows measurement in substations and other points with low line resistance. Internal protection circuit protects user and instrument from inadvertent connection to lines.
Custom limits: Pre-programmed limits with PASS/FAIL evaluation of measurement result and bright REEN/RED indicators providing visual evaluation of the results.
Portable: Lightweight portable design.
Memory: Up to 1500 test results with timestamp can be stored in internal memory.
Downloadable: PC SW HVLink PRO enables downloading, review, analyses and printing of test results.