The MIT1025 10 kV diagnostic insulation resistance tester is a CAT IV rated, compact 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.


The MIT1025 is also equipped with lithium-ion fast rechargeable batteries and 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.

Test voltage: 500V, 1000V, 2500V, 5000V, 10000V

User defined test voltage: 100 V to 1 kV in 10 steps, 1kV to 5kV in 25V steps

Max resistance: 20TΩ

Short circuit / charge current: 3mA 

Capacitance range with test voltage above 500V: 10nF to 25μF

Current range: 0.01nA to 6mA

Memory capacity: 5.5 hours logging @ 5 seconds intervals

Test modes: IR, IR(t), DAR, PI, SV, DD, Ramp test

Interface: USB type B

Real time output: 1 Hz output readings (V, I, R)

Share by: