Megger MIT30

The Megger MIT30 30kV High Voltage Insulation Tester is a precision-engineered DC insulation resistance tester designed for testing medium- and high-voltage electrical equipment. Capable of delivering up to 30 kV DC test voltage, the MIT30 provides accurate and stable insulation resistance measurements for cables, transformers, switchgear, rotating machines, and other high-voltage assets.

Built for utility, substation, and heavy industrial environments, the MIT30 offers a continuously adjustable high-voltage output, allowing technicians to perform controlled insulation tests tailored to the equipment under evaluation. Its high charging current capability ensures reliable testing of long cable runs and high-capacitance loads, while precision current measurement enables accurate resistance readings from meg ohms to tera ohms.

Advanced diagnostic testing methods including:

Insulation Resistance (IR) measurement

Polarization Index (PI) testing

Dielectric Absorption Ratio (DAR)

Step voltage testing

Controlled ramp voltage testing

Timed test sequences

Leakage current monitoring

These diagnostic functions help detect insulation aging, moisture contamination, surface tracking, and internal breakdown before catastrophic failure occurs.

Safety is a core design feature of the MIT30. It incorporates zero-start interlock protection, automatic discharge of the test object after completion, voltage presence detection, and clear safety indicators to protect both the operator and the equipment under test. The rugged enclosure is designed to withstand harsh field conditions, making it suitable for demanding maintenance operations.

A clear display provides real-time indication of voltage, resistance, current, and test duration, enabling operators to monitor performance throughout the test cycle. Internal data storage and PC connectivity allow results to be recorded, downloaded, and incorporated into maintenance reports or compliance documentation.

The Megger MIT30 is an ideal solution for:

High-voltage cable testing

Transformer insulation diagnostics

Switchgear and breaker insulation verification

Motor and generator insulation evaluation

Commissioning and preventive maintenance programs

Utility and substation reliability testing

Combining high-voltage capability, advanced diagnostic features, and robust field-ready construction, the MIT30 is a trusted instrument for professionals who require accurate, safe, and dependable insulation testing up to 30 kV.

Specification

High Voltage & Output

Maximum Test Voltage: Up to 30 kV DC
Voltage Selection: Continuously adjustable output for tailored testing
Controlled Ramp Function: Smooth voltage application and controlled ramp-down to protect test specimens
High Charging Current: Capable of stable output for long cables and high-capacitance loads

Insulation Resistance & Diagnostic Testing

Insulation Resistance Range: From megohms (MΩ) to teraohms (TΩ)
Polarization Index (PI): Evaluates insulation condition over time
Dielectric Absorption Ratio (DAR): Assesses insulation absorption characteristics
Step Voltage Testing: Multi-level evaluation of insulation response
Timed Insulation Test: Adjustable durations for trend comparison
Leakage Current Measurement: Detects current flow due to insulation degradation
Capacitance Measurement: For cables and high-capacitance test objects

Display & User Interface

Large Visual Display: Real-time readout of voltage, current, insulation resistance, and test time
Intuitive Controls: Easy selection of voltages, modes, and test parameters
Status Indicators: Clear visual feedback during tests

Safety Features

Automatic Discharge: Safely discharges the test object after testing
Zero-Start Interlock: Prevents output until test conditions are safe
Voltage Presence Indicator: Warns if residual voltage remains
Rugged Construction: Designed for industrial and utility field environments
Operator Safety Design: Interlocks and warnings to minimize risk during high-voltage testing

Data & Connectivity

Internal Storage: Saves test results for later review
PC Connectivity: Export data for reporting and analysis
Software Compatibility: Works with reporting and maintenance software

Power & Environmental

Supply Options: Mains power operation with safety circuitry
Operating Temperature: Suitable for field conditions (approx. –10 °C to +50 °C)
Portable Design: Field-ready form factor suitable for utility and industrial environments

Typical Applications

High-voltage cable insulation testing
Transformer insulation diagnostics
Switchgear and breaker insulation verification
Motor and generator insulation assessment
Preventive maintenance and commissioning testing
Substation and utility test programs

HV DC Tester

Megger MIT30 30kV For Sale