Megger MIT1025-UK 10 kV Diagnostic Insulation Resistance Tester



  • Measures up to 20 TΩ
  • PI, DAR, DD, SV and ramp test
  • Operate from line power/mains if battery dead
  • Li ion battery - extended capacity, rapid charge
  • Advanced memory with time/date stamp
More Information
Warranty 2 years
Price Match Yes

Megger MIT1025-UK 10 kV Diagnostic Insulation Resistance Tester

Offering CAT IV, the MIT1025 is compact, light 10 kV insulation resistance tester for the diagnostic testing and maintenance of high voltage electrical equipment. Enclosed in a tough case it is both smaller and lighter than its predecessor making it even easier to carry and store.

As well as measuring insulation resitance to 20 TΩ, the MIT1025 also offers various diagnostic tests such as Polarisation index, Dielectric Absorption Ratio, Step Voltage, Dielectric discharge and ramp testing.

Now equipped with lithium ion fast rechargeable batteries, the instrument has a large, clear, easy to read, display making it equally suitable for use in both bright sunlight and poorly lit environments. Information displayed includes resistance, voltage, leakage current, capacitance, battery status and time constant. In addition, the elapsed time of the test is displayed constantly removing the need for separate timer.


  • 20TΩ maximum insulation resistance
  • Timed IR plus PI and DAR diagnostic testing
  • Can operate even when batteries are dead when hooked up to on line power/mains
  • Rapid charge battery gives up to 6 hours continuous testing
  • Dedicated voltmeter functionality from 30V to 660V
  • CAT IV 600V safety rated
  • Large built-in LCD screen with automatic backlight for use in darkened conditions
  • Noise filter automatically filters out electrical noise up to 3mA
  • Dielectric discharge, step voltage and ramp testing functions
  • In built memory stamps data with time/date information and allows users to recall tests
  • Download data directly to PC via USB connection
  • Compatible with PowerDB Lite software package
Compare Range  MIT515 MIT525 MIT1025 MIT1525
Test Voltage        
15.0 kV       x
10.0 kV     x x
5.0 kV x x x x
2.5 kV x x x x
1.0 kV x x x x
500 V x x x  
250 V x x    
Max reading 10 TΩ 10 TΩ 20 TΩ 30 TΩ
Min reading 10 kΩ 10 kΩ 10 kΩ 10 kΩ
Voltage x x x x
Capacitance x x x x
Leakage current x x x x
Test Types        
Timed insulation resistance x x x x
Polarisation index x x x x
Dielectric absorption index x x x x
Step voltage   x x x
Dielectric discharge   x x x
Ramp   x x x
Other Features        
Analogue and digital display x x x x
Short circuit current 3 mA 3 mA 3 mA 4 mA
Rechargeable x x x x
Timer control and display x x x x
Max noise rejection 3 mA 3 mA 3 mA 4 mA
USB output x x x x
PowerDB Lite x x x x


What's Included?

  • Megger MIT1025
  • User guide CD
  • Power lead
  • 3 m leadset x 3
  • Medium insulated clips
  • 3 m leadset x 3
  • Large insulated clips
  • USB cable
  • PowerDB Lite software
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