The Megger MIT30 is a portable 30-kV insulation tester that has been developed to satisfy the demand for a variety of high voltage, high accuracy, low current applications. The MIT30 is used to undertake HV insulation tests (proof/ hi-pot test) on insulating material where low levels of leakage current, down to an accuracy of 100 nA, need to be measured.

The MIT30 has a test current of up to 330 μA, and user-selectable trip levels from 0 to 360 μA, provide protection to the test piece against flashovers (arcing) and further damage in the event of a breakdown. An audible ionization indicator gives an audio indication of any electrical discharges present during the test period.

The MIT30 can be used to perform step-voltage and proof tests which, when incorporated into a routine maintenance program, can aid in predicting potential failure before breakdown occurs. Power for the instrument is derived from a universal mains power supply, 85-264 V ac, 47-440 Hz, or 110 - 350 V dc.

The MIT30 is housed in rugged, field-proven IP67, lightweight and portable case. This, plus bright LEDS visible in direct sunlight, and high-contrast backlit LCDs make the instrument suitable for use in differing, and sometimes hostile, environments.

Output

• Voltage: 0 to 30kV dc (variable negative with respect to earth / ground
• Maximum Current: 330µA
• Peak-Peak Ripple: <0.4%
• Line Regulation: 0.03%
• Load Regulation: 0.001%

Current

• 330µA continuous, user selectable trip from 0 to 360µA

Accuracy

• Voltage Meter: +/- 1.5% (full scale), 10V resolution
• Current Meter: +/- 1.5% (full scale), 100nA resolution

Input

• Mains: ac: 85 - 264V ac, 47 - 440Hz, dc: 110 - 350 V dc, <75 VA

Mechanical

• Dimensions: 360 L x 304 W x 194 D mm
• Weight: 10 kg

Click on a link below view the application notes in pdf format.

Be on GUARD for effective testing

A Guide to Diagnostic Testing Above 1kV