Marmonix 30-2 Digital Megohmmeter Insulation Tester

Marmonix 30-2 Digital Megohmmeter Insulation Tester checks insulation resistance during electrical maintenance. The digital megohmmeter helps technicians look for deterioration, moisture, contamination, or other conditions that can reduce separation between conductors and equipment surfaces. A clear test record supports preventive maintenance and troubleshooting when the correct procedure is used.

Use the 30-2 only on de-energized equipment. Follow site safety procedures, test limits, discharge requirements, and the product instructions. Verify that a motor, cable, panel, or other asset is isolated before connecting the tester. Record the asset identifier, test configuration, environmental conditions, and result so readings can be compared over time.

For example, a maintenance crew can use the 30-2 to check a motor cable during a planned shutdown before returning equipment to service.

The 30-2 supports routine checks on motors, cables, and electrical systems, but it does not replace a complete diagnostic assessment or electrical safety program. Compare readings with manufacturer guidance and site acceptance criteria. Investigate unexpected changes before energizing the asset. Keep leads and terminals clean, inspect accessories, and allow equipment to discharge after testing.

Browse related products in our insulation testers category. Select an instrument that matches the voltage, environment, and documentation needs of the work. Store accessories safely, label test leads, and include asset history in the maintenance record. Consistent procedures make results more useful for planning, reporting, and handover between technicians across scheduled service work. Review trends after each service visit, note unusual readings, and keep the instrument with its accessories in a protected, dry location.