Introducing the new version of the popular MIT510 by Megger. With the MIT510/2, the operation of the instruments remains unchanged, but overall improvements have been made.

This new 5 kV insulation resistance tester from Megger is designed specifically to assist you with the testing and maintenance of high voltage electrical equipment. The case is incredibly rugged and easy to carry, being made of tough polypropylene and achieving an ingress protection rating of IP54. In addition, the model number is marked on both the top and side of the case for ease of identification in stores or vehicles.

The instrument has a large easy to read backlit LCD 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 timers.

The controls of the instrument are clear and unambiguous and a "quick start" guide is included in the lid of the instrument removing the need to carry bulky manuals under site conditions. The instrument is fitted with a guard terminal to enhance accuracy. The guard test lead is included as standard with the instrument.

To further enhance the flexibility of the instrument the MIT510 has the facility to set the test voltage in steps from 250 V to 5000 V avoiding the expense of several insulation resistance testers to meet your application needs.

This insulation resistance tester is designed to meet the highest safety standards and meets the requirements of EN61010. In addition, the instrument measures the voltage at the terminals and if this is above 50V then the instrument will display the high voltage warning and inhibit testing. At the end of the test the instrument will automatically discharge the energy transferred to the equipment during the test phase.

Improvements with the /2 Series

• Safety rating increased from CAT III 300V to CATIV 600V
  • CATIV effectively means the instrument is protected for use on outside applications.
  • 600V means the instrument is protected against connection to a system with up to 600V phase to earth / ground.
  • Protection against impulses doubled from 4kV (CATIII 300V) to 8kV (CATIV 600V).
  • CAT rating requirements come from IEC1010-1: 2001
  • The increase in safety rating has been achieved without compromising the performance of the guard terminal. Megger is the only manufacturer to specify the performance. Note


• Test leads
  • All instruments now come supplied with test leads with insulated test clips
  • 5kV instruments supplied with 6220-820 (Medium insulated clips)


• Operates down to –20 degrees C (Old Version Was –10 degrees C)


• Battery life management improvements
  • Battery life indicator improved
  • Improved switched off battery life

Note: The guard terminal performance of any of the MIT or S1 range is specified as “2% error guarding 500k Ohm leakage with a 100M Ohm load”.

The guard terminal is an important function of the instrument providing what is, in it self, a diagnostic test to detect surface leakage across insulation. Use of the guard terminal may show that an insulation surface may require simply cleaning.

MIT510 In Use

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