Extech Announces New MG320 Insulation Tester

This week, Extech announced the new MG320, a robust CAT IV 20GΩ/1000V insulation tester with integrated True RMS multimeter. The new MG320 is ideal for industrial predictive maintenance programs that include routine insulation testing of electrical and electronic equipment and cables.

The rugged new tool puts insulation testing up to 1kV (1000V) and a 20GΩ range in a portable tester, optimized for testing motors, generators, transformers and other electrical components. The MG320 offers users five test voltages (50V, 100V, 250V, 500V, 1000V) and step voltage in 10% increments from 50% to 120% of range. For advanced insights, the MG320features both Polarization Index (PI) and Dielectric Absorption Ratio (DAR) modes as well as continuity and low resistance testing with 20kΩ range and zero function.

Extech Announces New MG320 Insulation Tester

The tester’s comparison mode permits technicians to customize Pass/Fail values for the varying requirements of insulation tests on gear around a job site. Insulation testing length can be configured with a programmable timer. A locking function mode enables hands-free use while readings are displayed on a large, backlit dual display with digital readout and analog bar graph. During testing, up to 99 readings can be stored and readings on the display can also be frozen using Data Hold. After testing, the meter internally discharges the voltage test signal automatically.

The MG320 couples powerful insulation resistance testing with the essential diagnostic capabilities of a True RMS multimeter, helping to reduce toolbox clutter. Technicians can measure AC and DC voltage in addition to the functions above.

The meter comes complete with tilt stand, test leads, alligator clip, six AA batteries, and soft storage case. The meter is backed by a Category IV 600V overvoltage safety rating and a one year warranty. Learn more here: extech.com/mg320.