- Medium Insulated Test Clip Lead Set (3 x 3m)
- Power Lead
- Screened USB Cable with Filters
- Quick-Start Label
- CertSuite Asset Lite Software Access
- User Manual & Safety Documentation
- Calibration Certificate
Megger MIT525/2 Advanced 5kV HV Insulation Resistance Tester
SKU: MEGGMIT5252
- Offers selectable test voltages from 250V to 5kV
- Supports advanced diagnostic modes and has a RE>Act mode that measures reabsorption current
- Has up to 6mA noise rejection, maintaining high accuracy
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We offer FREE standard delivery on all orders over £249, with a range of next-day options also available on many items.
Find out more on our delivery information page.
We want our customers to be fully satisfied with the goods they purchase from us, offering returns for up to 60 days.
Find out more about our refunds policy here.
We're always happy to offer help, information & advice to find the right instrument for you, so please get in touch.
To speak to our sales team, call us on 0113 248 9966, use our Live Chat service or contact us online.
£3,099.00
£3,718.80
Use reward points to get money off future purchases.
Please note: Customers must be signed into their account to be elegible. Find out more about reward points here.
Found this product cheaper & in stock somewhere else? Give us the details and we'll endeavour to match the price.
To price match, contact us online or call 0113 248 9966.
We offer FREE standard delivery on all orders over £249, with a range of next-day options also available on many items.
Find out more on our delivery information page.
We want our customers to be fully satisfied with the goods they purchase from us, offering returns for up to 60 days.
Find out more about our refunds policy here.
We're always happy to offer help, information & advice to find the right instrument for you, so please get in touch.
To speak to our sales team, call us on 0113 248 9966, use our Live Chat service or contact us online.
Megger MIT525/2 Advanced 5kV Insulation Resistance Tester
The Megger MIT525/2 Advanced 5kV Insulation Resistance Tester is built for professionals who require precision, reliability, and intelligent data handling in high-voltage environments. As part of Megger’s Advanced range, the MIT525/2 is perfect for predictive maintenance, commissioning, and troubleshooting of critical electrical assets such as transformers, switchgear, motors, generators, bushings, and high-voltage cables.
The MIT525/2 is ideal for testing demanding applications, offers selectable test voltages from 250V to 5000V and measures insulation resistance from 10kΩ to 15TΩ with high accuracy (±5% up to 1 TΩ at 5kV). It supports advanced diagnostic modes including IR(t), Polarisation Index (PI), Dielectric Absorption Ratio (DAR), Dielectric Discharge (DD), Stepped Voltage (SV), Ramp Test, and Megger’s patented PI predictor (Plp), which estimates PI values early in the test to save time. The RE>Act mode measures reabsorption current to prevent false pass/fail results, improving the reliability of insulation assessments.
The Advanced range also introduces enhanced noise immunity, allowing the MIT525/2 to operate effectively in power distribution environments with up to 6mA of interference current. It also offers the ability to increase or decrease output current, giving users greater control over test conditions. These features make it especially suitable for environments with high electrical noise or complex insulation systems.
The MIT525/2 supports both USB and Bluetooth® LE interfaces, making it easy for users to transfer data to Megger’s CertSuite Asset Lite mobile app or PowerDB software. These features allows them to record, store, and report test results for compliance and long-term asset monitoring while real-time data streaming via USB or Bluetooth allows for remote viewing and analysis, adding convenience and flexibility to workflows.
With user experience in mind, the MIT525/2 has an intuitive interface that features dual rotary switches and a large, high-contrast backlit display where users can view multiple measurement parameters at the same time in any lighting, and a graphical quick-start guide printed inside the lid to assist first-time users. The analogue arc display provides visual feedback of insulation resistance values, which improves interpretability during testing.
Safety is key when it comes to the design of the MIT525/2 as it carries a CAT IV 600V safety rating and is certified to operate at altitudes of up to 3000 meters. It comes with a five-tier voltage warning system that alerts users of hazardous conditions, while automatic capacitive discharge and voltage detection ensure safe handling post-test. The MIT525/2 comes in a dual-case construction that includes a rugged outer shell to protect against drops and a fire-retardant inner case for added safety. Plus, with a IP65 rating (lid closed), the instruments is protected against moisture and dust ingress during transport and storage. Removable lids with Velcro-on pouches keep accessories secure and accessible, while also improving access to terminals during testing.
The MIT525/2 is powered by long-lasting 10.8V, 5.2Ah lithium-ion rechargeable battery which provides up to 6 hours of continuous testing at 5kV with a 100MΩ load. A 30-minute quick charge offers approximately one hour of operation, and the unit can also be powered directly from AC mains when needed.
Comparing the Megger Essential, Advanced & Expert Ranges
| Feature | Essential Range MIT1015 MIT515/2 |
Advanced Range MIT525/2 MIT1025/2 MIT1525/2 |
Expert Range S1-568/2 S1-1068/2 S1-1568/2 |
| High Guard Termial Performance | ✔ | ✔ | ✔ |
| IR | ✔ | ✔ | ✔ |
| IR(t) | ✔ | ✔ | ✔ |
| PI Polirasation Index | ✔ | ✔ | ✔ |
| PI Predictor | ✔ | ✔ | ✔ |
| DAR Dielectric Absorption Ratio | ✔ | ✔ | ✔ |
| DD Dielectric Discharge | ✔ | ✔ | |
| Ramp Test | ✔ | ✔ | |
| RE>Act mode | ✔ | ✔ | ✔ |
| PDC test | ✔ | ✔ | |
| Max. voltage available | 5kV or 10kV | 5kV, 10kV or 15kV | 5kV, 10kV or 15kV |
| Default maximum current | 3mA | 3mA | 6mA |
| User selectable max. current values | n/a | 1mA, 3mA, 6mA (6mA only from main supply) | 1mA, 2mA, 3mA, 4mA, 5mA, 6mA (6mA from internal battery and mains supply |
| Max. noise current with measurement withing accuracy spec. | 3mA (LV and MV <45kV) | 6mA (HV <230kV) | 8mA (EHV <1000kV) |
| Adaptive filter | ✔ | ||
| Negative current handling | ✔ | ✔ | ✔ |
| Averaging filter | ✔ | ||
| CAT IV 1000V | ✔ | ✔ | |
| CAT IV 600V | ✔ | ✔ | ✔ |
| Hazardous peak voltage detection during IR measurement | ✔ | ✔ | |
| On-board - time stamped | ✔ | ✔ | |
| Temperature value stored | ✔ | ✔ | |
| Humidity value stored | ✔ | ||
| Test results transfer via wired USB | ✔ | ✔ | |
| Test result transfer via wireless Bluetooth LE | ✔ | ✔ | |
| Test result live streaming via wired USB | ✔ | ✔ | |
| Test result live streaming via wireless Bluetooth LE | ✔ | ✔ | |
| Remote control via wired USB | ✔ | ||
| New custom colour display | ✔ | ✔ | ✔ |
| Carry all holdall | ✔ | ✔ | ✔ |
| Deeper lid pouch | ✔ | ✔ | ✔ |
| CertSuite Asset Lite compatible | ✔ | ✔ | |
| CerSuite Assert compatible | ✔ | ✔ | |
| Power DB Lite supplied free | ✔ | ✔ | |
| Power DB Advance or Pro support | ✔ | ✔ |
part number: 1016-084
Key Features
- Selectable test voltages up to 5000V
- Includes IR(t), PI, DAR, DD, Stepped Voltage, Ramp Test, and PI Predictor (Plp)
- RE>Act mode enhanced accuracy and safety
- PDC test capability
- Measures up to 30TΩ
- Safety rated up to CAT IV 1000V to 3000 metres
- 5 tier voltage warning system
- IP65 rated
- Up to 6mA noise rejection
- Adjustable output current
- Unique dual case design
- Operated from battery or AC mains supply
- Rapid charge Li-ion battery
- Up to 6 hours of continuous testing at 5kV
- Intuitive interface
- Advanced memory with time/date stamp
- USB & Bluetooth® LE Connectivity
- Compatible with CertSuite Asset
What's In The Box?
|
For comprehensive specifications on the Megger MIT525/2 Advanced 5kV Insulation Resistance Tester, please see the brochure below. |
| Label | Type | Size | Download | |
|---|---|---|---|---|
|
Megger Advanced Range Preview | 3 MB | Download |
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Megger 1kV Control Circuit Test Lead Set (6220-822) SKU: MEGG6220822£105.00 (ex VAT)£126.00 (inc VAT) -
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Megger 3m HV Insulation Test Leads with 10kV Large Clips (1002-534) SKU: MEGG1002534£135.00 (ex VAT)£162.00 (inc VAT) -
Megger 5m HV Insulation Test Lead Set with 6kV Medium Clips (1002-641) SKU: MEGG1002641£147.00 (ex VAT)£176.40 (inc VAT) -
Megger 5m HV Insulation Test Leads with 10kV Large Clips (1002-645) SKU: MEGG1002645£179.00 (ex VAT)£214.80 (inc VAT) -
Megger 10m HV Insulation Test Lead Set with 6kV Medium Clips (1002-643) SKU: MEGG1002643£228.00 (ex VAT)£273.60 (inc VAT) -
Megger 8m HV Insulation Test Leads with 10kV Large Clips (1002-646) SKU: MEGG1002646£230.00 (ex VAT)£276.00 (inc VAT) -
Megger 10m HV Insulation Test Leads with 10kV Large Clips (1002-647) SKU: MEGG1002647£240.00 (ex VAT)£288.00 (inc VAT) -
Megger 15m HV Insulation Test Leads with 10kV Large Clips (1002-648) SKU: MEGG1002648£335.00 (ex VAT)£402.00 (inc VAT) -
Megger 15m HV Insulation Test Lead Set with 6kV Medium Clips (1002-644) SKU: MEGG1002644£315.00 (ex VAT)£378.00 (inc VAT) -
Megger 25m HV Insulation Test Leads with 10kV Large Clips (1003-201) SKU: MEGG1003201£380.00 (ex VAT)£456.00 (inc VAT) -
Megger 30m HV Insulation Test Leads with 10kV Large Clips (1003-202) SKU: MEGG1003202£450.00 (ex VAT)£540.00 (inc VAT) -
Megger 10m 10kV Shielded HV Insulation Test Leads (6220-861) SKU: MEGG6220861£455.00 (ex VAT)£546.00 (inc VAT) -
Megger 15m 10kV Shielded HV Insulation Test Leads (6220-833) SKU: MEGG6220833£485.00 (ex VAT)£582.00 (inc VAT) -
Megger 20m 10kV Shielded HV Insulation Test Leads (1005-817) SKU: MEGG1005817£590.00 (ex VAT)£708.00 (inc VAT)
Please see our terms and conditions for full details of TM Care & Protect.
Everything you’re likely to require for the next 3 or 5 years:
✅ Annual calibrations included
No further calibration costs for either 3 or 5 years
✅ Free collection and return for annual calibration
No hidden postage costs when it’s time for calibration
✅ ‘Zero-Downtime’ for the life of your care plan
Free loan equipment should your purchase ever need sending away for repair
✅ Anti-theft protection
Each care plan includes a SmartTrace Forensic Marking kit that acts as a deterrent for your test equipment and other tools
✅ Instrument cleaning kit
Cleaning kit included with each TM Care & Protect plan
Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.
Ensures complete reliability, minimised downtime and peace of mind. TM Care & Protect packages include:
✅ Annual Calibration
No further calibration costs for up to 5 years.
✅ Zero Unplanned Downtime
In case of any unforeseen repairs, we provide FREE loan instruments so you can continue working.
✅ Theft Deterrent Kit
Each care plan includes a SmartTrace forensic marking kit: The UK's most powerful theft deterrent. Use on your test equipment, van and tools.
✅ No Shipping Cost
Includes collection and return deliveries when it's time for calibration.
✅ Instrument Cleaning Kit
Avoid preventable issues by keeping your test equipment clean.
Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.
Please see our terms and conditions for full details of TM Care & Protect.