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Megger MIT525 5kV Diagnostic Insulation Resistance Tester

SKU AVO/MIT525 Categories ,
  • For diagnostic testing and maintenance of HV electrical equipment.
  • Compact, light 5 kV insulation resistance tester.
  • PI, DAR, DD, SV and ramp test
  • Insulation resistance to 10 TΩ
  • Advanced memory with time/date stamp
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£2,982.95 (ex VAT)

£3,579.54 (inc VAT)

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Megger MIT525-UK 5kV Diagnostic Insulation Resistance Tester

The Megger MIT525 5kV insulation resistance tester takes the essential functions of the MIT515 and adds various diagnostic tests such as step voltage, dielectric discharge and ramp testing. The MIT525 still also carries out Polarisation Index (PI) and Dielectric Absorption Ratio (DAR).

Megger MIT525 insulation test voltages

  • 250V
  • 500V
  • 1000V (1kV)
  • 5kV
  • 5kV

Megger MIT525 test modes

  • Insulation Resistance Test
  • Dielectric Absorption Ratio
  • Polarisation Index
  • Dielectric Discharge
  • Step Voltage


With the Megger MIT’s unique case design, the lid can be removed to allow better access to the instruments functions. When closed, the case provides IP65 protection. A handy quick start guide is also included on the inside of the lid to assist with operation for first time users. Operation is has been made as simple as possible with two rotary dials and rubberised buttons.

Safety is always at the forefront of any Megger product and with the MIT525 it is no different. With its CAT IV safety rating and locking lead terminals to prevent accidental disconnection, the MIT525 protects the user whilst the instrument is in use. To begin a test, the user needs to push and hold the test button for a couple of seconds. This feature is designed to reduce the chance of accidently starting a test before all necessary connections are made and the user is ready.

In addition to the MIT515, the Megger MIT525 also has built in memory which allows the user to recall the data when required. The data is also automatically date and time stamped for traceability. Data can be download via USB interface. PowerDB Lite asset management software is also included.

The 3 x 3m lead set supplied as standard with the MIT525 includes croc clips designed for clamping on to larger diameter test pieces. They are also built for everyday use and have a long service life. The locking plug design and none removable croc clips add to the safety features of the Megger MIT series.


Megger MIT525 features

  • 5 pre-set insulation test voltages 250 / 500 / 1k / 2.5k and 5k
  • Easy to use, rugged and reliable. Built to the Megger standards
  • Timed insulation resistance test, plus PI and DAR testing
  • Step voltage, dielectric discharge and ramp test modes
  • Up to 6 hours continuous use with Li-ion batteries (included)
  • Elapsed time of test displayed removing need for separate timer
  • IP65 rated case with removable lid
  • Measures voltage, capacitance and leakage current
  • Dedicated voltmeter function (30V to 660V)
  • Back lit, countersunk LCD screen
  • CAT IV 600V safety rating
  • Noise filter – rejects up to 3mA noise
  • High altitude operation up to 3000m
  • Weighs only 4.5kg for easy transportation
  • On board memory
  • Data recall with date and time stamp
  • Downloading facility via USB interface

Megger MIT5XX range comparrison

Compare RangeMIT515MIT525MIT1025MIT1525
Test Voltage
15.0 kV
10.0 kV
5.0 kV
2.5 kV
1.0 kV
500 V
250 V
Max reading10 TΩ10 TΩ20 TΩ30 TΩ
Min reading10 kΩ10 kΩ10 kΩ10 kΩ
Leakage current
Test Types
Timed insulation resistance
Polarisation index
Dielectric absorption index
Step voltage
Dielectric discharge
Other Features
Analogue and digital display
Short circuit current3 mA3 mA3 mA4 mA
Timer control and display
Max noise rejection3 mA3 mA3 mA4 mA
USB output
PowerDB Lite




What’s Included

  • Megger MIT525
  • User guide CD
  • Power lead
  • 3m lead set
  • x 3 medium insulated clips (1002-531)
  • USB cable (25970-041)
  • PowerDB Lite software
  • Manufacturers calibration certificate


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