- Details
- Category: Ground Resistance Testers

The Extech MG500-TL is a set of replacement test leads designed for use with the MG500 Digital High Voltage Insulation Tester.
- Details
- Category: Ground Resistance Testers

The MG500 is a digital high voltage insulation tester capable of testing voltages up to 10kV d measuring insulation resistance to 500GOhm. The MG500 has a CAT III 300 Volt safety rating. This product includes a one-year guarantee, a heavy-duty carrying case with cover, test leads, alligator clips, and eight C batteries.
Automatic Discharge | Yes |
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Dielectric Absorption Ratio | Yes |
Insulation Resistance | 800kΩ to 500GΩ |
Insulation Resistance Basic Accuracy | ±5% |
Insulation Resistance Max Resolution | 1kΩ |
Insulation Test Voltage | 500VDC to 10kVDC (adjustable in 500V steps) |
Polarization Index | Yes |
Certifications | CE |
Dimensions | 13 × 10.2 × 6.3" (330 × 260 × 160mm) |
Power | 8 × C (1.5V) batteries |
Safety Category | CATIII - 300V |
Warranty | 2 years |
Weight | 7.9lbs (3.6kg) |
- Details
- Category: Ground Resistance Testers

This product combines a portable insulation tester (20GΩ/1000V) and a true RMS multimeter. The insulation tester features PI/DAR modes, a programmable timer, and a comparator for bespoke test combinations and speedy results. AC/DC Voltage, Resistance, and Continuity Testing are among the multimeter's capabilities. Manually store and recall up to 99 readings. Built with a sturdy shell and a huge backlit 6,000 count LCD panel with an analog bargraph. Comes with test leads, an alligator clip, 6 AA batteries, and a protective case.
AC Voltage | 600V |
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AC Voltage Basic Accuracy | ±2% |
AC Voltage Max Resolution | 0.1V |
Continuity | Yes |
DC Voltage | 600V |
DC Voltage Basic Accuracy | ±2% |
DC Voltage Max Resolution | 0.1V |
Insulation Resistance | 50MΩ, 100MΩ, 200MΩ,500MΩ, 2000MΩ, 1GΩ, 10GΩ, 20GΩ |
Insulation Resistance Basic Accuracy | ±3% |
Insulation Resistance Max Resolution | 0.01MΩ |
Insulation Test Voltage | 50V, 100V, 250V, 500V, 1000V |
Insulation Test Voltage Basic Accuracy | 0 to 10% |
Resistance | 20kΩ |
Resistance Max Resolution | 0.01Ω |
True RMS | Yes |
Certifications | CE |
Dimensions | 8.9 × 4.1 × 2.3" (225 × 103 × 59mm) |
Power | 6 × AA (1.5V) batteries |
Safety Category | CATIV - 600V |
Warranty | 2 years |
Weight | 1.5lbs (0.7kg) |
- Details
- Category: Ground Resistance Testers

The MG310 is a Compact Insulation Resistance Tester designed for rapid and easy testing and troubleshooting of motors, transducers, and other industrial equipment. Insulation resistance of 5.5GΩ ensures accurate measurements up to 1000V. Includes a simple snap-on protective hard cover and a soft case for transporting your meter and accessories to the next job site or storing them safely. Low resistance measurement with zero function, continuity beeper, large 2000-count dual display with backlight, high voltage and overload indication, auto-discharge and voltage output warning functions, and low battery indicator. Includes test leads, alligator clips, 6 AA batteries, a hard cover, and a soft carrying case.
AC Voltage | 30 to 600V |
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AC Voltage Basic Accuracy | ±2% of reading |
Insulation Resistance | 0.00 to 99.9MΩ , 100M to 5.5GΩ |
Insulation Resistance Basic Accuracy | ±5% of reading |
Insulation Test Voltage | 250V/500V/1000V |
Resistance | 0.00 to 200Ω |
Certifications | CE |
Dimensions | 6 × 4 × 2.8" (150 × 100 × 71mm) |
Power | 6 × AA (1.5V) batteries |
Safety Category | CATIII - 600V |
Warranty | 2 years |
Weight | 1.5lbs (0.7kg) |