High Voltage Insulation Testers & Megohmmeters
Insulation breakdown isn't just inconvenient - it's highly dangerous. These high voltage insulation testers verify the insulation of an electrical installation to see if action must be taken to prevent dangerous electrical incidents.
Find out more about High Voltage Insulation Testers & Megohmmeters below.


- Selectable test voltage: 250 V, 500 V, 1000V, and 2500V
- Insulation resistance: up to 500 GΩ
- Automatic PI and DAR calculations


- Adjustable test voltage from 250 V to 2500 V in 100 V increments
- Insulation resistance: up to 500GΩ
- Automatic PI, DAR, & DD calculations & Ramp Test mode


- Test voltage up to 5000V
- Voltage breakdown detection alerts
- Selectable test voltages in 50 V steps from 250 to 1000 V, and 100 V steps above 1000 V


- Measure resistance up to 1TΩ
- Maximum selectable test voltage: 5kV
- Use the IR3000FC Connector to communicate with the Fluke Connect App


- Test resistance up to 10KV and 2TOhms
- Selectable test voltages
- Guard system prevents leakage of surface current


- Test voltages up to 10 kV provides solutions for all applications
- Voltage breakdown detection alerts
- Selectable test voltages in 50 V steps from 250 to 1000 V, and 100 V steps above 1000 V


- Measure resistance up to 1TΩ
- Capacitance, leakage current, and breakdown testing
- Transfer readings to a smartphone/ tablet using the IR3000FC Connector


- Test high voltage equipment up to 10kV
- Internal warning bell warns of AC and DC voltage presence
- Measurement storage, voltage breakdown detection and LCD display


- Fluke Connect compatible for wireless data monitoring, analysis, trending and sharing
- Measure insulation resistance up to 2TΩ
- Maximum test voltage: 10kV
About High Voltage Insulation Testers & Megohmmeters
All electrical insulation is susceptible to degradation over time. At the start of its service life, the insulation applied to an electrical system - whether it's a common appliance such as a kettle or a high-powered device like a transformer - should be strong enough to make leakage current non-existent or negligible and ensure that the electrical installation/appliance can be used safely.
However, insulation will degrade over time leading to more potential leakage current. As such the system becomes less and less safe over time, and this is exactly why insulation resistance tests must be regularly carried out to ensure that the resistance of the insulation is sufficiently high.
We have a range of different insulation testers depending upon the application they are to be used in.