MT574 5kV Diagnostic Insulation Tester

The Major Tech MT574 5kV Diagnostic Insulation Tester is a professional-grade diagnostic instrument designed for advanced insulation testing across high-voltage electrical systems and EV workshop environments. Engineered for accuracy, safety and reliability, this unit is ideal for testing insulation integrity in cables, transformers, rotating machines and high-voltage components.

With selectable test voltages up to 5000V and insulation resistance measurement up to 10TΩ, the MT574 provides comprehensive diagnostic capability for modern electric and hybrid vehicle systems. Advanced functions including Polarization Index (PI) and Dielectric Absorption Ratio (DAR) enable technicians to assess insulation condition over time, supporting preventative maintenance and fault detection.

Designed for field use, the unit features a robust housing, large backlit display and onboard data storage, allowing technicians to capture, store and analyse test results efficiently.

Key Features

• High-voltage insulation testing up to 5kV
• Measures insulation resistance up to 10TΩ
• Polarization Index (PI) and DAR diagnostic functions
• Adjustable test voltage in 50V increments
• Large backlit LCD display with multi-parameter readout
• Internal memory storage (up to 500 results)
• Measures AC/DC voltage and capacitance
• Optical USB data transfer to PC
• Automatic discharge after testing
• Rugged, field-ready design with rechargeable battery

Technical Specifications