Megger MIT480 Mk 2 handheld insulation and continuity testers

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The Megger MIT480 Mk 2 range of handheld insulation and continuity testers is designed primarily for testing telecommunications equipment and cables. The testers offer a host of features to make testing faster and more convenient, and to minimise the risk of accidental damage to equipment under test.

The range currently includes two models — the MIT481, which offers a choice of four fixed test voltages and result storage, and the MIT485, which adds a variable test voltage feature, support for downloading of test results via a Bluetooth wireless connection and facilities for recharging batteries without removing them from the instrument.

A major innovation is support for three-wire connection (tip, ring and earth or A, B and E). This saves time as no disconnection and reconnection of test leads is needed to carry out the full range of tests on a cable pair. In addition, a differential test feature allows the difference between two consecutive continuity measurements to be calculated and displayed automatically.

In addition to their primary insulation test function, which delivers accurate results up to 100 GΩ with a test voltage of 500 V, the MIT480 Mk 2 instruments also offer fast continuity testing with a user-selectable test current of 20 or 200 mA. Continuity testing covers 0.01 Ω to 1 MΩ without the need for manual range switching.

The instruments provide DC and true rms AC voltage measurement up to 600 V. When measuring AC voltages, frequency up to 450 Hz is simultaneously displayed.