MIT515, MIT525, MIT1025, MIT1525

5 kV, 10 kV, 15 kV DC Insulation Resistance Testers

    30 TΩ maximum resistance

    Unique dual-case design provides additional user protection

    Operate from battery or AC source

    Rapid charge Li-ion battery

    Safety rated CATIV 1000 V to 3000 m (15 kV)

    Advanced memory with time/date stamp

MIT515

5 kV go/ no-go insulation resistance tester, insulation tester

   Measures up to 10 TΩ

   Selectable test voltage from 250 to 5000 V

   PI, DAR, DD test

   Improved productivity – operate from line power/mains if battery dead

    Li ion battery - extended capacity, rapid charge

   CATIV 600 V safety rating

Offering CAT IV, the MIT515 is the simplest of Megger's new range of small light 5 kV insulation

resistance testers for the 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.

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.

FEATURES AND BENEFITS

    Insulation resistance up to 30 TΩ @ 15 kV, 20 TΩ @ 10 kV, 10 TΩ @ 5 kV enables installation testing and long-term  trending of higher value apparatus, typically above 1 TΩ.

    High altitude operation up to 3000 m while maintaining CATIV 600 V (5 kV and 10 kV) and  CATIV 1000V (15 kV).

    5% accuracy all the way up to 1 TΩ @ 5 kV, 2 TΩ @ 10 kV, and 3 TΩ @ 15 kV ensures highest accuracy where it matters most.

    IR, timed IR, DAR, PI, DD, SV and ramp tests maximize diagnostic testing capability.

    3 mA short circuit current with unique max power regulations technology ensures maximum transfer whatever the load until selected voltage is reached.

    Noise filter rejects up to 3 mA (5 kV and 10 kV) and 6 mA (15 kV) noise for effective operation in electrically noisy environments.

    Li-ion battery allows up to 6 hrs continuous testing @ 5 kV with a 100 MΩ load; battery meets IEC 62133.

    Large backlit LCD, convenient for use in ambient lighting, clearly shows analog and digital readings.

    Dedicated voltmeter function (30 V to 660 V) allows the user to check for induced voltages.

    Smaller size and lighter weight allows easier transport and use without compromising performance.

    Unique dual case design allows for fire-retardant protection while maintaining ruggedness.

    High-quality, flexible silicon test leads meet safety regulations of IEC 61010-31:2008 while ensuring measurement accuracy.

    Timed IR plus PI, DAR, DD, SV and ramp tests maximize diagnostic testing capability.

    Operate from line power even if the battery is fully discharged (charges while operating).

    Two and one-half hour full battery charge time (one-half hour charge for one hour testing) significantly increases productivity.

    Up to six hours continuous testing (5 kV) on a single battery charge.

    Industry best guard terminal performance to insure highest accuracy of measured values.

    Enhanced driver technology provides plug-and-play when connected to the internet. No tedious and potentially interruptive setup procedures.

    Rotary switch operation for easy, intuitive field use.

    Locking test leads provide additional safety.

    Date and time-stamped test results reduce the risk of error in result interpretation.

APPLICATIONS

The Insulation Resistance (IR) test is a quantitative test which indicates the effectiveness of a product’s

electrical insulation. Applications include cables, transformers, motors/ generators, circuit breakers and

bushings.

The units are designed for testing the insulation of high-voltage electric equipment. Their wide voltage range

also allows applications for low-voltage equipment. The test techniques on the instruments provide valuable

diagnostic information.

All four instruments test the insulation resistance of:

    High-voltage power cables and high-voltage buses

    Large motor/ generator windings

    Line and substation transformers

The MIT525, MIT1025 and MIT1525 also perform spot tests, step voltage tests, dielectric discharge tests, ramp

tests, and dielectric absorption tests for the following applications:

    Acceptance testing at installation to check conformance to specifications.

    Routing preventive/ predictive maintenance testing after installation.

    QA testing as part of the manufacturing process.

    Diagnostic testing to isolate faulty components for repair.