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Megger MIT2500 Industrial/Utility High Voltage Insulation Tester-2.5kV

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£762.00 £635.00
Lead Time: 1-2 Weeks Free UK Delivery* Delivery Options

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Megger's MIT2500 is an industrial-grade handheld high voltage insulation tester suitable for testing insulation resistance up to 200GΩ.

The MIT2500 includes fixed voltage ranges of 50V, 100V, 250V, 500V, 1000V (1kV) and 2500V (2.5kV) and also includes a variable range which allows the user to 'dial in' a variable voltage between the full range of 50 to 2500V. A voltage feedback control is used to maintain the output test voltage to within 2% of the selected range, even when tests are currently ongoing.

This high voltage insulation tester is highly recommended for use in electrical and industrial applications such as single and three phase rotating machnery, single and multi-core cable testing or for the testing of motors. It's also ideally suited for any CAT IV 600V application.

New Model, New Features

This model is an upgraded, newer version of Megger's older insulation testers. It's packed with new, improved features, including:

  • Wider Range of Insulation Test Voltages - choose between a range from 50 to 2500V
  • Guard Terminal - high resistance accuracy with improved performance on higher insulation test ranges
  • 2.5kV Silicone Test Leads - purpose-designed, high quality silicone leads included with the kit as well as standard CAT III 1000V / CAT IV 600V leads
  • Test Voltage Display - the dual display will show both the current measurement readout as well as the actual test voltage on the screen at the same time
  • Single Resistance Continuity Range - fully automatic from 0.01Ω to 1.0MΩ
  • Bi-Directional Testing - the Megger MIT2500 supports automatic bi-directional testing with no need to reconnect test leads
  • Fast Continuity Response Time - response time of the continuity buzzer has been reduced for faster testing

Store and Download Your Measurement Results

The Megger MIT2500 is a datalogging insulation resistance tester - it gives you the ability to store your readings in built-in memory storage, ready for further analysis.

Files are stored in Excel format for easy transfer to PC with Bluetooth wireless connection to make transferring results as simple and seamless as possible.

Megger MIT2500 Insulation Tester Key Features

  • Handheld, portable solution for testing insulation resistance levels over a wide range
  • Fixed voltage ranges of 50V, 100V, 250V, 500V, 1000V and 2500V
  • Variable voltage range from 50 to 2500V
  • Insulation resistance measurements of up to 200GΩ
  • High quality improved guard terminal for increased performance on higher insulation test ranges
  • Supplied with high quality 2.5kV test leads as well as standard CAT IV/CAT III leads
  • Highly accurate test voltage - maintained within the tolerance of -0 to +2% +2V
  • Feedback-controlled, stabilised test voltage - remains in specification throughout the full range
  • Dual display shows actual measurements and test voltage at the same
  • Analogue arc on display to replicate response of a moving coil display
  • Automatic polarisation index (PI) and dielectric absorption ratio (DAR) functions
  • Timed testing - automatically test to a time limit
  • Test inhibit - prevents testing if voltage in excess of 25, 30, 50, 75 or 100V (user-selectable) are detected when testing insulation
  • Set the insulation buzzer to sound if insulation resistance is above a user-adjustable limits
  • Test lock facility - holds insulation test on continuously
  • Continuity resistance testing with one fully automatic range from 0.01Ω to 1.0MΩ
  • Automaticlaly uses preferred test current for load resistance under test
  • Bi-directional testing without the need to reconnect test leads
  • Faster response continuity buzzer compared to older molders
  • 200mA and 20mA continuity tests are both available
  • True RMS voltage measurements to 600V AC/DC with resolution from 0.1mV
  • Weatherproof design rated to IP54
  • Tough, shock-absorbing housing with excellent grip for on-site use
  • Suitable for being powered by either standard AA batteries or NiMH rechargeable batteries
  • Store and download your testing results in Excel format with Bluetooth wireless connectivity
  • High levels of safety - meets the international requirements of IEC61010 and EN61557, has live circuit test inhibiting and is suitable for use on CAT IV applications and supply voltages to 600V

What's Included?

  • Megger MIT2500 Insulation Tester
  • Red/Black/Blue Silicone Test Leads with Probes and Clips
  • 2.5kV Red/Black/Blue Silicone Test Leads with Clips
  • Owners Information CD
  • 6 x AA Alkaline Batteries
  • Carrying Case


There are a number of accessories for the Megger MIT2500 Industrial/ Utility High Voltage Insulation Tester. For further information regarding the items listed below, please contact our sales team. 

Our SKU Megger's Part Number Product
MEGITA1 1002-001B Test lead Set - Comprising Two Unfused Leads (Red/Black) with right angle plugs, Long & Short prods & croc clips (Boxed)
1000-562 1000-562 Test Lead Replacement Probe Cap [Clear] Bag of 20  
MEGRCDA4 1002-015B Fused Test Lead Set Red/Black Red FF500mA 50kA (Boxed)  
1002-491 1002-491B Probe & Clip Set - Insulation Testers
SP4F 1007-156 SP4F Remote Switched Probe
6121-561 6121-561 Fuse Set 5x500mA(F) 600V
1007-464 1007-464 Battery Charger Kit MIT400/2
MEGLOA20 1004-183 12V DC Car Battery Charger 2.5mm PIN
1002-774 1007-157 Remote Switched probe SP5 CAT IV 600 (Boxed)
1002-735 1002-735 Battery NiMH (X6)
Please note that the accessories listed above and the attached datasheets are subject to change. Both were correct at the time of publication.
Accessories related to this product:
  1. Megger 1007-464 Mains Charger Kit
    £54.90 £45.75
  2. Megger 1002-491 Probe & Clip Set for Megger's Insulation Testers
    £30.60 £25.50
  3. Megger 6121-561 Fuse Set
    Megger 6121-561 Fuse Set
    Lead Time: 1-2 Weeks
    £16.80 £14.00
  4. Megger Standard Test Leads
    £31.75 £26.46
  5. Megger 1002-735 NiMH Battery for MFT17/18
    £35.10 £29.25
  6. Megger 1004-183 12V DC Car Battery Charger
    £18.90 £15.75
  7. Megger Fused Test Leads (Red/Black)
    £63.00 £52.50
  8. Megger 1007-157B SP5 Switched Probe - Kit
    £64.80 £54.00
  9. Megger Clear Probe Caps for MFT 1500 Series - Bag of 20
    £20.70 £17.25
Part Code1004-745

Megger MIT2500 Technical Specifications

All quoted accuracies are at +20°C.

Insulation Accuracy 50 Volts: 10 GΩ ± 2% ± 2 digits ± 4.0% per GΩ
100 Volts: 20 GΩ ± 2% ± 2 digits ± 2.0% per GΩ
250 Volts: 50 GΩ ± 2% ± 2 digits ± 0.8% per GΩ
500 Volts: 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ
1000 Volts: 200 GΩ ± 2% ± 2 digits ± 0.2% per GΩ
2500 Volts: 200 GΩ ± 2% ± 2 digits ± 0.2% per GΩ
Service Error: BS EN 61557-2 (2007).
50V: ± 2.0% ± 2d, 100kΩ - 900kΩ ± 10.5%
100V: ± 2.0% ± 2d, 100kΩ - 900kΩ ± 10.3%
250V: ± 2.0% ± 2d, 100kΩ - 900kΩ ± 10.3%
500V: ± 2.0% ± 2d, 100kΩ - 900kΩ ± 10.3%
1000V: ± 2.0% ± 2d, 100kΩ - 900kΩ ± 11.5%
Guard Terminal Performance <5% erros on 500kΩ parallel circuit resistance with 100MΩ load
Display Range Analogue: 1GΩ full scale
Short Circuit/Charge Current 2mA +0 to -50% t EN 61557-2 (2007) (except 2500V)
Terminal Voltage Accuracy -0 +2% ±2V
Test Current 1mA at minimum pass values of insulation to a maximum of 2mA max
Operation EN61557: 0.10MΩ to 1.0GΩ
Leakage Current Display 10% ±3 digits
Voltage ±3% ±2 digits ±0.5% of rated voltage
Timer Control Countdown timer 60 seconds (adjustable to 10 minutes)
Note Above specs only apply when high quality silicone leads are used
Continuity Measurement 0.01Ω to 1MΩ (0 to 1000kΩ on analogue scale)
Continuity Accuracy ± 3% ± 2 digits (0 to 100 Ω )
± 5% ± 2 digits (100 Ω - 500 k Ω)
Service Error: BS EN 61557-4 (2007) -
± 2.0%, 0.1Ω - 2Ω ± 6.8%
Open Circuit Voltage 5V ±1V
Test Current 200mA (-0mA to +20mA)
(0.01Ω to 4Ω)
Polarity Single polarity (default) / dual polarity (configurable on setup)
Lead Resistance Null Up to 10Ω
Voltage Range DC: 0 to 600V
AC: 10mV to 600V TRMS sinusoidal (15Hz to 400HZ)
Unspecified: 0 to 10mV (15 to 400Hz)
Voltage Range Accuracy DC: ±2% ±2 digits
AC: ±2% ±2 digits
Service Errors: BS EN 61557-1 (2007) - ±2.0% ±2d. 0V to 300V AC/DC ±5.1%
Waveform Non-sinusoidal:
± 3% ± 2 digits >100 mV to 600 V TRMS
± 8% ± 2 digits 10 mV to 100 mV TRMS
Measurement Range 15 to 400Hz
Accuracy ±0.5% ± 1 digit
Range 0.1nF to 10μF
Accuracy ±5.0% ±2 digits (1nf to 10μF)
General Specifications
Storage Capacity >1000 test results
Data Download Bluetooth wireless
Bluetooth class II
Range Up to 10m
Power Supply 6 x 1.5V cells type IEC LR6 (AA, MN1500, HP7, AM3 R6HP) alkaline
6 x 1.2 NiMH rechargeable cells may be used
Battery Life 3000 insulation tests with duty cycle of 5 sec ON/55 sec OFF @ 1000V into 1MΩ Charger (optional)
12-15V DC (accessory interface)
Dimensions 228 x 108 x 63mm
Weight 815g
Fuse Use only 2 x 500mA (FF) 1000V 32 x 6mm ceramic fuse of high breaking capacity HBC 30kA minimu, Glass fuses MUST NOT BE FITTED
Safety Protection Meets EN 61010-1 (1995) to 600V phase to earth, Category IV. Refer to safety warnings supplied
EMC In accordance with IEC 61326 including amendment No 1
Temperature Coefficient <0,1% per °C up to 1 GΩ
<0,1% per °C per GΩ above 1 GΩ
Operating Temperature Range -10 to +55°C
Storage Temperature Range -25 to +70°C
Humidity 90% RH at 40°C max
Calibration Temperature +20°C
Maximum Alititude 2000m
IP Rating IP54
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