The Megger MIT510/2 is a 5 kV insulation resistance tester for the testing and maintenance of high voltage electrical equipment, from power cables and switchgear to transformers and large motor windings. It measures insulation resistance up to 15 TΩ, giving you a real trending value instead of an ambiguous “infinity” reading. A CAT IV 600 V safety rating to EN 61010 and IP65-rated polypropylene case make it suited to the realities of substation work and industrial sites. We supply the MIT510/2 as Megger’s authorised Irish distributor.
Please note: Megger discontinued the MIT510/2 in 2013 and replaced it with the Megger MIT515. We continue to support existing units through our INAB-accredited calibration laboratory and can advise on the MIT515 as a direct replacement.
Key specifications
| Parameter | Specification |
| Test voltages | 250 V, 500 V, 1000 V, 2500 V, 5000 V (preset steps) |
| Insulation resistance (digital) | 10 kΩ to 15 TΩ |
| Insulation resistance (analog) | 100 kΩ to 1 TΩ |
| Accuracy | ±5% to 1 TΩ |
| Short circuit/charge current | 3 mA |
| Safety rating | CAT IV 600 V (EN 61010) |
| Ingress protection | IP65 (lid closed) |
| Battery life | 6 hours continuous at 5 kV |
| Weight | 6.75 kg |
| Dimensions | 305 mm × 194 mm × 360 mm |
| Operating temperature | -20 °C to +50 °C |
The MIT510/2 operates from mains power or its internal rechargeable battery, which is useful when site conditions are unknown or long-duration testing is required.
Diagnostic and safety features
The MIT510/2 performs automatic timed insulation resistance (IR) testing with a built-in timer counting up to 99 minutes and 59 seconds. Its combined analog and digital display shows resistance, applied voltage, leakage current, capacitance, battery status, and time constant simultaneously. A guard terminal included as standard diverts stray leakage currents for improved accuracy on high-resistance measurements.
Safety is built into every function. Live voltage detection locks out testing above 50 V. Capacitive energy is automatically discharged after every test, with the decaying voltage visible on screen. The CAT IV 600 V rating provides protection against transient impulses to 8 kV.
Typical applications
The MIT510/2 handles insulation resistance testing on HV power cables, bus bars, large motor and generator windings, transformers, and switchgear. In practice, that covers routine preventive maintenance on utility assets, commissioning on data centre and pharmaceutical plant installations, and quality assurance testing during manufacturing. Five preset test voltages (250 V to 5000 V) mean one instrument works across both LV and HV equipment.
MIT510/2, MIT520/2, and MIT515 compared
The MIT510/2 performs automatic IR testing but does not include the preprogrammed Polarization Index (PI), Dielectric Absorption Ratio (DAR), step voltage, or dielectric discharge tests found on the MIT520/2. The MIT520/2 also adds variable voltage selection from 50 V, onboard memory, and USB/RS232 download.
The Megger MIT515 has replaced the MIT510/2, bringing lithium-ion battery technology, lighter weight, faster charging, and a PI predictor function. If you’re specifying new equipment, the MIT515 is the current equivalent.
Calibration and support
We calibrate Megger insulation testers in our INAB-accredited laboratory to ISO/IEC 17025:2017, so every certificate is traceable to national standards. That traceability matters at commissioning sign-off and under audit. We also handle repair and supply genuine Megger accessories from our base in Portlaoise.
FAQ
What is the measurement range of the Megger MIT510/2?
The digital display reads from 10 kΩ to 15 TΩ; the analog display covers 100 kΩ to 1 TΩ. Accuracy is ±5% up to 1 TΩ.
What test voltages does the MIT510/2 offer?
Five preset steps: 250 V, 500 V, 1000 V, 2500 V, and 5000 V. Variable voltage selection from 50 V requires the MIT520/2.
Has the Megger MIT510/2 been discontinued?
Yes. Megger discontinued the MIT510/2 in 2013 and replaced it with the MIT515. We can advise on remaining availability and on the MIT515 as a replacement, and we continue to calibrate and service existing MIT510/2 units.
Can Powerpoint Engineering calibrate my MIT510/2?
Yes. Our INAB-accredited laboratory (ISO/IEC 17025:2017) calibrates Megger insulation testers with full traceability to national standards.
Not exactly what you are looking for? Contact us with your exact requirements, we?re happy to help.
Megger MIT510-2 Insulation Tester Datasheet
For additional technical details about the Megger MIT510-2 Insulation Tester please refer to the product datasheet.
Megger MIT510-2 Insulation Tester User Manual
Please click on the button to Download the Megger MIT510-2 Insulation Tester User Manual.
