Guides · Insulation and High Voltage Testing
Read insulation resistance and index measurements with the configuration and comparison conditions attached.
Start with the question and the scope.
Identify the measured insulation system and retain the relevant conditions with the result. Use the applicable reference and asset documentation when deciding how the measurements should be compared.
Use the detailed articles below to connect that question with the method, the comparison and the equipment workflow. Keep the asset documentation and the reason for the work available when deciding which reading route to follow.
Explore the detailed guides.
Methods, context and interpretation
- Insulation Resistance vs Hipot: When Each Test Makes Sense
- How Do You Interpret Polarization Index in Insulation Aging?
- What should you look for in a megohmmeter for high-noise HV areas?
- What causes low insulation readings on a megohmmeter?
- Insulation Mat: Types, Uses, Benefits and Top Picks for Safety
- Insulation Resistance Testing: Test Voltage Selection by Asset
- Best Insulation Resistance Testers for Electrical Safety in 2026
- How to connect an Insulation Resistance Tester to the circuit under test?
Planning and equipment selection
Keep the evidence connected to the review.
Identify the asset and the specific question being assessed. Retain the instrument, configuration, relevant conditions and reference documents with the result so the next review can follow the same context.
Identify the measured insulation system and retain the relevant conditions with the result. Use the applicable reference and asset documentation when deciding how the measurements should be compared.
The approved test procedure and asset-specific criteria define the work and its acceptance review. Use this collection to organise the questions and compare equipment, then confirm the complete configuration for the application.
Connect the workflow with equipment.
Compare the published functions, configuration and reporting workflow against the identified task. Confirm the current specification and accessories for the asset before selecting a model.
Review the setup for your application.
Share the asset type, the test objective and the working environment so the configuration can be reviewed against the actual task.