Megger MIT1025 10 kV Insulation Resistance Tester
- MIT1025/2 from the ‘Advanced Range‘
The Megger MIT1025 is a 10 kV, Advanced range insulation resistance tester designed for professionals who require both the higher test voltage for medium and high-voltage assets and the advanced diagnostic capabilities of Megger’s premium MIT range.
With measurement capability up to 30 TΩ at 10 kV, onboard memory, data transfer options, and enhanced noise immunity (up to 6 mA), the MIT1025 is ideal for power utilities, service contractors, and industrial maintenance teams who need deeper analysis tools alongside dependable field performance.
Why choose the Megger MIT1025?
The MIT1025 delivers more than just insulation resistance measurements. It adds advanced test modes such as PDC, Ramp, and Dielectric Discharge to help diagnose complex insulation issues.
Its higher voltage range allows testing of high-voltage cables, motors, and transformers with improved accuracy at high resistance values, making it well-suited to demanding maintenance and commissioning roles.
Key features of the Megger MIT1025:
- RE>Act mode – improves measurement accuracy and operator safety by accounting for reabsorption currents.
- Patented PI predictor (PIp) – predicts PI test results mid-test, saving time.
- Measures up to 30 TΩ at 10 kV.
- ±5% accuracy to 2 TΩ at 10 kV.
- Advanced diagnostic modes: PDC, Ramp, Dielectric Discharge.
- Noise rejection up to 6 mA for reliable readings in HV environments up to 230 kV.
- Selectable test currents (1 mA, 3 mA, 6 mA).
- Onboard memory with time/date stamp.
- USB and Bluetooth® LE for result transfer.
- Safety rated CAT IV 1000 V to 3000 m altitude.
- Rugged dual-case design with large backlit colour display.
↑ The Advanced Range models (MIT525/2, MIT1025/2, MIT1525/2) are an ideal choice if, in addition to the above, you need to record test results, transfer results to software/mobile app (via USB or Bluetooth LE), and want the benefits of more diagnostic insulation testing. The Advanced range also adds additional noise immunity for power distribution environments, and the ability to either increase or decrease the output current.
| Feature | Details |
| Max Test Voltage | 10 kV |
| Insulation Resistance Range | up to 30 TΩ |
| Accuracy | ±5% to 2 TΩ at 10,000 V |
| Noise Rejection | up to 6 mA |
| Test Currents | 1 mA, 3 mA, 6 mA (6 mA on mains supply) |
| Safety Rating | CAT IV 1000 V, 3000 m altitude |
| Connectivity | USB and Bluetooth® LE |
| Memory | Time/date stamped onboard storage |
| Display | Large, colour, backlit display |
| Design | Dual case, impact and ingress protection |
Built for your environment
With its durable construction and high environmental resistance, the MIT1025 thrives in substations, cable yards, and plant rooms. Enhanced noise immunity allows it to produce stable results in noisy HV electrical environments, and the large colour display remains clear in any lighting conditions.
Applications:
- Commissioning and maintenance of high-voltage cables and switchgear.
- Testing transformers, motors, and generators.
- Utilities and industrial facilities needing advanced diagnostic tools.
- Long-term condition monitoring and trend analysis.
What comes with the Megger MIT1025?
- MIT1025 insulation resistance tester
- Li-ion rechargeable battery (pre-installed)
- Mains power lead
- Test leads rated for 10 kV
- User guide and quick-start lid reference
- Carry-all holdall with removable lid pouch
❓ Frequently Asked Questions (FAQ)
Q1: How is the MIT1025 different from the MIT1015?
A. The MIT1025 is an Advanced range model with additional diagnostics, memory, USB/Bluetooth® connectivity, and improved noise immunity compared to the Essential MIT1015.
Q2: Can I transfer results to my PC?
A. Yes – the MIT1025 supports USB and Bluetooth® LE for transferring stored test data.
Q3: Is it suitable for noisy HV environments?
A. Yes – with up to 6 mA of noise rejection, it’s stable in HV environments up to 230 kV.
Q4: Can I adjust the test current?
A. Yes – selectable settings allow you to choose 1 mA, 3 mA, or 6 mA depending on the application.
Category Comparison:
The MIT1025 is in the Advanced range, offering 10 kV capability and advanced diagnostics that make it suitable for more demanding applications than Essential models. Compared to Expert range testers, it has slightly lower noise immunity and lacks adaptive filtering and remote control.
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