Megger Insulation Testers

Megger insulation testers are a familiar reference point for many technicians and engineers. If you are comparing options, there are professional alternatives that deliver accurate insulation resistance measurements across common test voltages from 1kV to 15kV.

Purpose of Insulation Testing

Insulation testing is used to confirm the integrity of cable and equipment insulation, helping prevent faults and outages. Regular testing detects deterioration caused by moisture, heat, contamination or mechanical stress, so maintenance can be planned before problems escalate.

Where These Testers Are Used

• Electrical contractors: Installation verification and periodic tests.
• Industrial maintenance teams: Preventive programs for motors, drives and switchgear.
• Utilities: Asset checks within substations and distribution networks.
• Consulting engineers: Condition assessment as part of reliability and compliance.

Alternatives by Voltage Class

• 1000V insulation testers for general electrical work.
• 2.5kV & 5kV testers for industrial and utility environments.
• 10kV+ testers for high-voltage applications and critical assets.

Core Features

• Stable output voltages for repeatable results.
• Wide measurement ranges with clear displays.
• Rugged, field-ready construction.
• Timed testing and data options depending on model.

For detailed options across voltage classes, view the Insulation Resistance Testers family and sub-categories: 1000V, 2.5kV & 5kV, and 10kV+.